# Central Europe heatwave intensifies, impacts widen

> Live situation record from CLSTR: https://clstr.news/situations/czech-republic-spring-weather-forecasts
> Updated: 2026-07-30T19:46:02.000Z. Sources: 269. Developments: 81.

After a brief cooling spell in early July, Central Europe again faced soaring temperatures. In the Czech Republic, forecasts from mid‑May through early June warned of rapid swings – from 0‑5 °C mornings to daytime highs of 20‑26 °C, then alternating rain, thunderstorms and brief warm spells up to 27 °C. The abrupt weekend drop of up to ten degrees spurred promotion of energy‑efficient cooling equipment as household electricity demand rose.

Health officials issued a heat‑acclimatization advisory for outdoor sport, urging early‑morning or evening activity, ample hydration and electrolyte use. By late July, a new heat wave pushed temperatures to 39 °C, setting July records in Plzeň‑Bolevci (39.4 °C). Fire‑risk alerts were heightened across Central Bohemia and south‑east Moravia, banning open fires and pyrotechnics. Prague opened air‑conditioned “cooling oases” at the Škoda Palace, providing water, seating and refreshments on July 31 and August 1.

In Slovakia, third‑degree heat warnings forecast >38 °C for early August. The Slovak Emergency Service logged 56 heat‑related ambulance calls on 31 July, many in Banská Bystrica, while the public‑health office reiterated water‑intake and indoor‑temperature guidance. Hungary reduced post office hours and equipped staff with cooling gear. Railway operator ZSSK reported significant delays on 31 July due to infrastructure strain. Trnava’s winter ice‑stadium continued to serve as a public cooling shelter, offering free drinking‑water fountains.

Overall, the region’s drought‑driven heatwave has amplified fire danger, strained health services, disrupted transport and prompted a network of public cooling facilities.

## Claims

- Slovenia experienced its third heat wave of the season. (corroborated by 6 sources)
- ARSO issued a red warning for Primorska and central Slovenia and an orange warning elsewhere. (corroborated by 6 sources)
- DARS expects one of the busiest weekend traffic periods of the summer. (corroborated by 6 sources)
- Increased traffic is driven by the start of school holidays in Germany’s Baden‑Württemberg and Bavaria. (corroborated by 6 sources)
- DARS will distribute water and informational leaflets at the Jesenice, Tepanje and Lom rest areas on Friday 10 a.m.–2 p.m. and Saturday 4 p.m.–8 p.m. (corroborated by 6 sources)
- Drivers are advised to rest, carry sufficient water and check traffic conditions before travelling. (corroborated by 6 sources)
- On two‑lane highways vehicles must keep to the extreme left or right; on three‑lane highways the emergency lane is the space between the left‑most and middle lanes. (corroborated by 6 sources)
- It is prohibited to follow emergency vehicles, use the emergency lane for travel, or exit vehicles at rest areas for walking or photographing. (corroborated by 6 sources)
- The Slovenian Environment Agency (ARSO) and the Inspectorate increased monitoring together with police during the fire‑danger period. (corroborated by 4 sources)
- The Administration for Protection and Rescue declared a large fire hazard for the whole of Slovenia at the end of July. (corroborated by 3 sources)
- A red fire‑danger phase was declared for the southwestern regions of Slovenia (Koper, Sežana, Divača, Hrpelje‑Kozina, Komen, Nova Gorica, Miren‑Kostanjevica, Renče‑Vogrsko). (corroborated by 3 sources)
- Open burning, fireworks, and discarding burning objects are prohibited nationwide during the declared fire‑hazard period. (corroborated by 3 sources)

## Timeline

### 2026-07-30: Heatwave in Slovakia and Hungary Sparks Ambulance Calls and Service Disruptions

Heatwave warnings in Slovakia and Hungary led to 56 ambulance calls, hospital transports, train delays, reduced post‑office hours and public cooling measures.

18 sources. https://clstr.news/cluster/hungary-sees-wave-of-phishing-emails-spoofing-magyar-posta-and-semmelweis-university

### 2026-07-30: Czech Republic faces extreme heat wave with temperatures up to 39 °C

Czech Republic endures a heat wave with temps up to 39 °C, fire‑risk alerts, and Prague opens air‑conditioned spaces in Škoda Palace for public relief.

10 sources. https://clstr.news/cluster/prague-opens-airconditioned-cooling-center-at-koda-palace-amid-heat-wave

### 2026-07-29: DARS warns of record traffic congestion during heat‑wave weekend

DARS alerts drivers to a record‑busy weekend amid a heat wave, issuing water distribution and safety instructions as ARSO places red and orange fire warnings across Slovenia.

18 sources. https://clstr.news/cluster/slovenia-declares-high-fire-risk-municipal-fire-patrols-activated

### 2026-07-29: Slovak hospitals to install 250 air‑conditioning units as heatwave hits

Slovakia will fund about 250 hospital AC units after a heatwave drove ward temps above 42 °C; citizens raised €27,600 and a family firm added window‑film cooling.

9 sources. https://clstr.news/cluster/slovak-hospitals-to-install-250-airconditioning-units-as-heatwave-hits

### 2026-07-21: Slovakia braces for extreme summer weather as El Niño peaks

A record‑strong El Niño is driving a summer heat spike, prompting Slovakia to equip 90% of ZSSK trains with air‑conditioning, issue storm warnings, and warn of health risks, while prosecutors push for same‑sex‑

5 sources. https://clstr.news/cluster/slovakia-heat-wave-eases-as-august-forecast-predicts-cooler-temperatures

### 2026-07-18: Rain and thunderstorms expected overnight in Latvia, Sunday will clear

Latvia will see rain and possible thunderstorms overnight on Sunday, followed by clearer skies and warmer temperatures (up to 24 °C) during the day; a new cyclone is expected early next week.

3 sources. https://clstr.news/cluster/rain-and-thunderstorms-expected-overnight-in-latvia-sunday-will-clear

### 2026-07-18: Summer Heat Triggers Women’s Discomfort and Seasonal Depression in Slovakia

Heat in Slovakia is causing physical discomfort for women and a summer form of seasonal depression, affecting a small global share and prompting health advice.

2 sources. https://clstr.news/cluster/summer-heat-triggers-womens-discomfort-and-seasonal-depression-in-slovakia

### 2026-07-18: South Moravia Thunderstorms Yield Rare Roll Cloud

Strong thunderstorms hit South Moravia’s Blansko area, delivering up to 20 mm rain, wind damage and 26 firefighter calls; a rare roll cloud was recorded on video.

5 sources. https://clstr.news/cluster/south-moravia-thunderstorms-yield-rare-roll-cloud

### 2026-07-18: Czech experts issue heat safety and gardening advice for summer

Czech health experts urge pregnant women to hydrate, stay cool and watch for pre‑eclampsia, while gardeners are advised to shade plants, use mulches and drip irrigation to cope with summer heat.

6 sources. https://clstr.news/cluster/czech-experts-issue-heat-safety-and-gardening-advice-for-summer

### 2026-07-17: Czech Republic experiences record 41.9°C heat wave, ice‑cream orders double

Czech Republic saw a record 41.9 °C heat wave in June 2026, prompting a 99.8% rise in daily ice‑cream orders and raising health concerns for vulnerable residents.

2 sources. https://clstr.news/cluster/czech-republic-experiences-record-419c-heat-wave-icecream-orders-double

### 2026-07-16: Czech Republic faces cooler, rainy week ahead

A cold front will lower Czech temperatures to about 20 °C, bring frequent rain and occasional thunderstorms through the week, with Saturday briefly warm and Sunday rainy, affecting outdoor plans.

2 sources. https://clstr.news/cluster/czech-republic-faces-cooler-rainy-week-ahead

### 2026-07-15: Latvia Braces for Cooler Temperatures and Rain as Cold Front Moves In

Latvia faces a cold front this weekend, dropping temps to mid‑teens, bringing rain, thunderstorms and strong winds, with a brief Sunday break before another cyclone early next week.

7 sources. https://clstr.news/cluster/latvia-expects-sunny-hot-july-16-weather-with-temperatures-up-to-28-c

### 2026-07-15: Czech Republic faces severe thunderstorms and heat warnings

ČHMÚ warns of severe thunderstorms with strong winds, hail and possible supercells, plus heat and fire alerts across the Czech Republic, urging precautionary measures.

3 sources. https://clstr.news/cluster/czech-republic-faces-severe-thunderstorms-and-heat-warnings

### 2026-07-13: German holiday rentals face legionella risk, electronic faucets offer solution

Stagnant water in German holiday rentals raises legionella risk; regulations demand frequent water turnover, and SCHELL electronic faucets automate flushing to improve safety.

3 sources. https://clstr.news/cluster/german-holiday-rentals-face-legionella-risk-electronic-faucets-offer-solution

### 2026-07-11: Přerov farmers start harvest amid drought, expect lower yields

Czech farmers in the Přerov region started the 2024 harvest, but drought, pest pressure and record June heat of 41.9 °C mean they expect lower yields, according to agronomists and the Ministry of Agriculture.

2 sources. https://clstr.news/cluster/perov-farmers-start-harvest-amid-drought-expect-lower-yields

### 2026-07-11: Czech Republic heatwave fuels climate and wind‑turbine controversy

A record June heatwave in the Czech Republic, part of a wider European surge, intensifies climate debates and opposition to wind‑turbine projects, despite majority public support for wind energy.

6 sources. https://clstr.news/cluster/czech-republic-heatwave-fuels-climate-and-windturbine-controversy

### 2026-07-10: Tuzi Firefighters Prevent Blaze Near Romani Settlement

Firefighters halted a blaze near a Romani settlement in Tuzi, preventing damage and urging residents to avoid open flames.

2 sources. https://clstr.news/cluster/tuzi-firefighters-prevent-blaze-near-romani-settlement

### 2026-07-09: Mostar firefighters warn against open fires amid heatwave

Mostar firefighters warned residents not to light open fires after a near‑miss fire in Ilići, citing dry conditions and urging prompt reporting.

3 sources. https://clstr.news/cluster/mostar-firefighters-warn-against-open-fires-amid-heatwave

### 2026-07-09: Heatwave expected in Slovakia as El Niño intensifies

A strong El Niño will bring a heatwave to Slovakia from Monday, with temperatures forecast up to 30‑35 °C, prompting WMO warnings and rail‑service preparations.

2 sources. https://clstr.news/cluster/heatwave-expected-in-slovakia-as-el-nio-intensifies

### 2026-07-09: Czech health guidance on pregnancy discomfort and swollen legs in summer heat

Czech health experts recommend cool, breathable clothing, hydration and limited sun for pregnant women, and leg elevation, proper footwear and electrolyte balance to prevent summer swelling.

3 sources. https://clstr.news/cluster/czech-health-guidance-on-pregnancy-discomfort-and-swollen-legs-in-summer-heat

### 2026-07-08: Czech regions show stark differences in household water use and supply coverage

Czech household water use ranges from 106.8 L/day in Prague to about 81 L in Zlín; national water‑network coverage is 95.2 %, with Liberec lagging despite 80 million CZK investments funded by the Turów fund.

2 sources. https://clstr.news/cluster/czech-regions-show-stark-differences-in-household-water-use-and-supply-coverage

### 2026-07-08: Slovenia declares nationwide fire hazard amid heatwave

Slovenia declares a nationwide fire‑risk period as heatwave brings dry conditions; bans open fires and enforces stricter monitoring after recent blazes near Slovenska Bistrica and Nova Gorica.

2 sources. https://clstr.news/cluster/slovenia-declares-nationwide-fire-hazard-amid-heatwave

### 2026-07-08: Czech Republic heat wave pushes temperatures to 30 °C as forecast extends

Czech heat wave continues with 25‑30 °C highs and fire risk; Slovakia sees a brief cold snap and water‑quality alerts.

7 sources. https://clstr.news/cluster/czech-republic-braces-for-extreme-heat-as-temperatures-near-40-c

### 2026-07-06: Downburst Storm Hits Nitra, Slovakia Causing Wind Damage

A downburst in Nitra, Slovakia produced 90 km/h winds, damaging trees, roofs and power lines, flooding streets and disrupting traffic.

2 sources. https://clstr.news/cluster/downburst-storm-hits-nitra-slovakia-causing-wind-damage

### 2026-07-06: Czech health officials warn of Legionella risk from stagnant water after holidays

Czech health authorities warn that stagnant water after holidays can harbour Legionella, citing 620 cases in 2024 and urging residents to run taps, use hot showers, and ventilate bathrooms.

2 sources. https://clstr.news/cluster/czech-health-officials-warn-of-legionella-risk-from-stagnant-water-after-holidays

### 2026-07-06: Czech Republic's farmers confront drought and frost damage amid worsening climate extremes

Czech towns are urged to plan for heat, drought and floods while farmers face severe drought, low insurance uptake and a fruit harvest cut by half due to spring frosts, risking over CZK 1 billion in losses.

5 sources. https://clstr.news/cluster/czech-farmers-face-limited-irrigation-options-amid-severe-drought

### 2026-07-05: Czech Republic to Experience Tropical Heat as Temperatures Surge Above 30°C

Czech forecasts warm, sunny days with temps up to 31 °C and possible tropical heat; Slovenia expects 28‑33 °C, sunnier early week, with showers and thunderstorms later.

7 sources. https://clstr.news/cluster/czech-republic-and-slovenia-brace-for-rainy-start-as-temperatures-rise-toward-30-c

### 2026-07-03: Czech Republic faces returning heat wave and thunderstorms

Czech rain and thunderstorms expected this weekend, with July bringing above‑average heat and possible heat dome; temperatures may exceed 30 °C, similar forecasts issued for parts of France, Spain, Portugal, IT

2 sources. https://clstr.news/cluster/czech-republic-faces-returning-heat-wave-and-thunderstorms

### 2026-07-02: Czech heat slows mushroom foraging and grain harvest

Heatwave in the Czech Republic reduced mushroom growth and threatens grain yields, with forecasts showing 7.69 million tonnes of cereals but potential declines due to drought.

2 sources. https://clstr.news/cluster/czech-heat-slows-mushroom-foraging-and-grain-harvest

### 2026-07-02: Slovakia heatwave strains health and damages infrastructure

A record‑breaking heatwave in Slovakia heightened dehydration risks, triggered mental‑health concerns and damaged a Košice cycle path, prompting transport restrictions and repairs.

4 sources. https://clstr.news/cluster/slovakia-heatwave-strains-health-and-damages-infrastructure

### 2026-07-01: Czech railway faces storm‑damaged track closure and freight wagon fire

Storms waterlogged a Czech track near Prachatice, closing it until August, while a fire in a Skalice freight wagon caused modest damage but saved valuable cargo.

2 sources. https://clstr.news/cluster/czech-railway-faces-stormdamaged-track-closure-and-freight-wagon-fire

### 2026-06-30: Lightning strike injures six at Czech camp as storms disrupt Czech and Slovak transport

Lightning hit a tree at a Czech children’s camp, injuring six (five children, one adult). The storm caused ~50,000 lightning strikes, rail disruptions in Slovakia, and prompted emergency response; calmer, sunny

11 sources. https://clstr.news/cluster/lightning-strike-injures-adult-and-five-children-at-czech-camp

### 2026-06-30: Germany expands discounted Deutschlandticket to apprentices and welfare recipients

Berlin cuts the Deutschlandticket price for apprentices to €37.80, and the CDU proposes turning welfare mobility allowances into direct ticket subsidies, channeling €2.5 bn to public transport.

4 sources. https://clstr.news/cluster/deutsche-bahn-offers-apprenticeship-fare-discount-and-heatrelated-ticket-cancellations

### 2026-06-30: Czech Republic grapples with worsening drought and water-use priorities

Czech experts call for clear water-use priorities as drought threatens drinking supplies, small ponds and fish farms, urging wetlands restoration and stronger reservoir management.

2 sources. https://clstr.news/cluster/czech-republic-grapples-with-worsening-drought-and-water-use-priorities

### 2026-06-30: Slovakia hospitals face heatwave crisis as lack of air‑conditioning endangers patients

Slovak hospitals struggle with extreme summer heat as many lack air‑conditioning, prompting patient complaints, medical warnings, and KDH calls for a ministerial crisis plan.

2 sources. https://clstr.news/cluster/slovakia-hospitals-face-heatwave-crisis-as-lack-of-airconditioning-endangers-patients

### 2026-06-30: Czech Republic hit by flooding and record hail, rail line closed

Flooding and 10‑cm hail in the Czech Republic forced rail repairs and threatened local agriculture.

11 sources. https://clstr.news/cluster/idnes-outlines-targeted-advertising-consent-and-privacy-settings

### 2026-06-30: Czech Republic hits new heat records as temperatures reach 41.9 °C

Czech Republic set new heat records in late June 2026, hitting 41.9 °C at Doksany and widespread 35 °C+ temps, prompting health emergencies and record‑breaking regional highs.

5 sources. https://clstr.news/cluster/czech-republic-hits-new-heat-records-as-temperatures-reach-419-c

### 2026-06-29: Czech Republic Experiences Severe Thunderstorms and Flooding

Severe thunderstorms across the Czech Republic brought heavy rain, large hail, strong winds, flooding and railway disruptions, prompting dozens of fire‑brigade calls and regional storm warnings.

10 sources. https://clstr.news/cluster/czech-thunderstorms-cause-floods-and-rail-delays-as-authorities-issue-warnings

### 2026-06-29: Slovakia heat wave ends as storms roll in, EU adds 3 € Temu duty on low‑value parcels

Slovakia’s heat wave was halted by strong storms, dropping temperatures sharply, while the EU introduced a 3 € tariff on low‑value parcels from outside the bloc, affecting Chinese e‑commerce sites.

2 sources. https://clstr.news/cluster/slovakia-heat-wave-ends-as-storms-roll-in-eu-adds-3-temu-duty-on-lowvalue-parcels

### 2026-06-28: Lithuanian health experts warn of under‑estimated summer water risks

Lithuanian doctors warn that small water bodies and beach sand can cause infections, stress child supervision, no alcohol, and proper first aid for summer water safety.

2 sources. https://clstr.news/cluster/lithuanian-health-experts-warn-of-underestimated-summer-water-risks

### 2026-06-28: Heat wave disrupts rail services in Slovakia and the Czech Republic

Extreme heat in Slovakia and Czechia triggers health alerts and forces rail operators to limit speeds and reduce train capacity.

2 sources. https://clstr.news/cluster/heat-wave-disrupts-rail-services-in-slovakia-and-the-czech-republic

### 2026-06-28: Slovak health experts give advice on heat stress and sleep hygiene

Slovak experts warn that heat, dehydration and alcohol strain the heart and advise hydration, cooler exercise times, and monitoring with wearables; lavender aromatherapy may aid sleep, though it’s not a medical

2 sources. https://clstr.news/cluster/slovak-health-experts-give-advice-on-heat-stress-and-sleep-hygiene

### 2026-06-28: Czech train leaves 630 passengers stuck in German heat

Over 600 passengers on a Czech train from Hamburg to Prague were stranded in Germany’s Prignitz after a storm knocked out power, leaving the carriages scorching and doors locked; three were hospitalized and the

10 sources. https://clstr.news/cluster/hamburgprague-train-leaves-630-passengers-stranded-in-germany

### 2026-06-28: Czech emergency services see surge in calls amid extreme heat

Czech rescue crews report a 30‑plus‑percent surge in calls as extreme heat brings collapses, accidents and even a rapid home birth, prompting health warnings.

3 sources. https://clstr.news/cluster/czech-emergency-services-see-surge-in-calls-amid-extreme-heat

### 2026-06-28: Brandenburg Train Rescue Over 40°C Heat Aided by Local Farmers

A technical fault stranded a Brandenburg regional train with 300 passengers in >40 °C heat; local farmers supplied water and cooling packs, aiding rescue and resumption of service.

2 sources. https://clstr.news/cluster/brandenburg-train-rescue-over-40c-heat-aided-by-local-farmers

### 2026-06-27: Czech Republic faces record heat and strong thunderstorms

Czech Republic is experiencing record heat up to 41 °C and strong thunderstorms with gusts up to 90 km/h, heavy rain and hail, potentially affecting Germany.

4 sources. https://clstr.news/cluster/czech-republic-faces-record-heat-and-strong-thunderstorms

### 2026-06-26: Czech Republic heatwave shatters temperature records, sparks smog alerts and billions in economic losses

A Czech heat wave hit 41.1 °C, set smog alerts, threatens crops and could cost up to 20 bn CZK, while prompting a rush for fans and health warnings.

18 sources. https://clstr.news/cluster/czech-republic-heat-wave-tests-office-workers-and-electricity-grid

### 2026-06-26: Central Europe heatwave sets temperature records and disrupts transport

Heatwave across Slovakia and the Czech Republic breaks 40 °C records, triggers health alerts, fire risks and rail speed limits, with a cooling front expected early next week.

27 sources. https://clstr.news/cluster/slovak-and-slovenian-railways-cut-speeds-due-to-heatwave

### 2026-06-26: Heat warning issued for Šaľa district, Slovakia, June 27‑28, 2026

Level‑3 heat warning for Šaľa, Slovakia, predicts temperatures above 38 °C on 27‑28 June, posing health and fire risks.

2 sources. https://clstr.news/cluster/heat-warning-issued-for-aa-district-slovakia-june-2728-2026

### 2026-06-26: Deutsche Bahn launches free ticket cancellations amid heatwave and unveils new strategic plan

Deutsche Bahn offers free cancellations for June tickets amid a record heatwave and rolls out a new strategy under CEO Evelyn Palla focused on reliability, staff cuts and profit targets.

3 sources. https://clstr.news/cluster/deutsche-bahn-launches-free-ticket-cancellations-amid-heatwave-and-unveils-new-strategic-plan

### 2026-06-25: Czech hospitals see surge in patients during intense heatwave

Czech hospitals and ambulance services report sharp rises in heat‑related patients and injuries as temperatures hit up to 40 °C, stressing hydration and extra cooling measures.

2 sources. https://clstr.news/cluster/czech-hospitals-see-surge-in-patients-during-intense-heatwave

### 2026-06-25: Deutsche Bahn and ÖBB issue heat warnings, offer free ticket cancellations

ÖBB and Deutsche Bahn warned of heat‑induced track problems, urged travelers to skip non‑essential trips and offered free ticket cancellations for June 23‑30 bookings.

13 sources. https://clstr.news/cluster/deutsche-bahn-urges-travelers-to-cancel-trips-amid-extreme-heat

### 2026-06-25: Lithuanian doctors urge summer blood‑pressure monitoring

Lithuanian health experts warn that summer heat can cause blood‑pressure swings and advise regular monitoring, medication adherence and a diet rich in bananas, garlic, beetroot, oats and yogurt.

2 sources. https://clstr.news/cluster/lithuanian-doctors-urge-summer-bloodpressure-monitoring

### 2026-06-24: Czech heatwave forces multiple festivals and events to be cancelled

A Czech heatwave with temps near 40 °C forced the cancellation or postponement of festivals, sports events and a steam‑train gathering, citing safety and fire‑risk concerns.

4 sources. https://clstr.news/cluster/czech-heatwave-forces-concert-and-festival-cancellations

### 2026-06-24: Czech firefighters face heat strain and mourn fallen colleague

Czech fire services contend with extreme heat in South Moravia while also rallying aid for the family of a firefighter who died in South Bohemia.

5 sources. https://clstr.news/cluster/czech-firefighters-face-heat-strain-and-mourn-fallen-colleague

### 2026-06-24: Czech health experts advise summer hydration and skin care

Czech health advice urges drinking plain water, electrolyte‑rich drinks and water‑rich foods in summer, while avoiding sugary, caffeinated or alcoholic beverages, and recommends proper skin moisturisation.

3 sources. https://clstr.news/cluster/czech-health-experts-advise-summer-hydration-and-skin-care

### 2026-06-24: Slovakia embraces DIY summer health tips

Slovaks adopt simple summer health habits: a DIY electrolyte drink and advice on open‑window sleep, with experts noting benefits and cautions.

2 sources. https://clstr.news/cluster/slovakia-embraces-diy-summer-health-tips

### 2026-06-24: Czech and Slovak heatwave pushes temperatures toward 40 °C

Heatwave breaks June records in Czechia (up to 37.5 °C) and threatens 40 °C in Slovakia, prompting health alerts and emergency cooling measures.

17 sources. https://clstr.news/cluster/czech-parents-struggle-with-summer-childcare-as-school-holidays-outpace-vacation

### 2026-06-24: Heat wave drives temperatures toward 40 °C in Czech Republic and Slovakia

Heat warnings in the Czech Republic and Slovakia predict temperatures up to 40 °C, sparking health alerts and water‑use restrictions across both countries.

29 sources. https://clstr.news/cluster/czech-and-slovak-towns-face-water-shortages-amid-severe-drought

### 2026-06-23: Slovak Railway warns heat could disrupt train service

ZSSK warned that an imminent heat wave with temperatures up to 40 °C could disrupt train operations in Slovakia; the railway is monitoring conditions and advising travelers to stay hydrated and follow updates.

3 sources. https://clstr.news/cluster/slovak-railway-warns-heat-could-disrupt-train-service

### 2026-06-22: Western Slovakia fire‑risk warnings issued for dozens of districts

Police warn western Slovak districts to avoid any open flames as a heat wave raises fire‑danger, while rail authorities flag heat‑related risks to train services.

2 sources. https://clstr.news/cluster/western-slovakia-firerisk-warnings-issued-for-dozens-of-districts

### 2026-06-22: Czech Republic heatwave drives temperatures to 40 °C in major cities

Czech Republic faces a heatwave with temps up to 40 °C in Prague and other cities; health warnings issued as storms are expected later in the week.

2 sources. https://clstr.news/cluster/czech-republic-heatwave-drives-temperatures-to-40-c-in-major-cities

### 2026-06-21: Czech Republic records extreme heat and severe thunderstorms

Czech Republic saw a June cold snap followed by record heat and severe thunderstorms, prompting fire alerts and widespread disruptions.

2 sources. https://clstr.news/cluster/czech-republic-records-extreme-heat-and-severe-thunderstorms

### 2026-06-21: Poland and Czech Republic battered by severe storms and floods

Severe storms after Czech heat records caused over 700 fire calls, floods in Czech and Polish regions, a lightning strike leaving a woman in cardiac arrest, and delayed the Polish Speedway Grand Prix.

2 sources. https://clstr.news/cluster/poland-and-czech-republic-battered-by-severe-storms-and-floods

### 2026-06-21: Czech Republic issues severe thunderstorm warning as LightningMaps app tracks real‑time strikes

Czech authorities warned of intense thunderstorms with hail, gusts over 70 km/h and flash‑flood risk, while the free LightningMaps app shows real‑time lightning strikes worldwide.

2 sources. https://clstr.news/cluster/czech-republic-issues-severe-thunderstorm-warning-as-lightningmaps-app-tracks-realtime-strikes

### 2026-06-21: Czech Republic faces extreme heatwave with temperatures up to 37 °C and thunderstorms

Czech Republic endures a severe heatwave with temps up to 37 °C, thunderstorms dropping up to 40 mm of rain, and worsening drought through late June.

6 sources. https://clstr.news/cluster/czech-republic-faces-week-of-extreme-heat-as-temperatures-exceed-30c

### 2026-06-21: Storms batter Czech Republic and Slovakia, causing extensive damage

Weekend storms hit Czech Republic and Slovakia, sparking thousands of insurance claims, dozens of emergency calls, downburst in Bratislava and closures of recreation areas.

7 sources. https://clstr.news/cluster/severe-storms-and-heat-warnings-batter-slovakia-downburst-damages-bratislava

### 2026-06-20: Thunderstorms flood Czech Republic and Slovakia, fire crews respond

Severe thunderstorms with hail and floods hit Czech Republic and Slovakia, prompting hundreds of fire‑crew responses, railway disruptions and record heat warnings.

25 sources. https://clstr.news/cluster/czech-republic-heatwave-triggers-thunderstorm-warning-up-to-36c

### 2026-06-19: Czech health officials warn of dehydration and water‑borne hazards during heatwave

Czech health agencies advise moderate water intake during heat, warn against over‑hydration and dangerous algae or parasites in stagnant waters, with inspections ongoing.

4 sources. https://clstr.news/cluster/czech-health-officials-warn-of-dehydration-and-waterborne-hazards-during-heatwave

### 2026-06-18: Czech Republic and Slovakia face intense heat wave with temperatures up to 36 °C

Heat‑wave warnings for Czech Republic and Slovakia forecast up to 36 °C, prompting health alerts, record‑temperature monitoring, and advice on staying cool for people and pets.

10 sources. https://clstr.news/cluster/slovakia-issues-heat-warning-as-lake-temperatures-rise

### 2026-06-17: Olomouc region faces up to 35 °C heatwave, health officials warn of risks

Olomouc region will see up to 35 °C this weekend; officials warn of dehydration, heatstroke and advise staying hydrated, in shade, and limiting outdoor activity.

3 sources. https://clstr.news/cluster/olomouc-region-faces-up-to-35-c-heatwave-health-officials-warn-of-risks

### 2026-06-17: Central European heat wave pushes temps above 35 °C across Czech Republic and Slovakia

A heat wave brings 30‑36 °C temps to the Czech Republic and Slovakia, prompting health alerts, storm warnings, and free chilled water stations from Lokni when forecasts exceed 30 °C.

12 sources. https://clstr.news/cluster/slovakia-faces-a-tropical-heatwave-with-temperatures-up-to-36-c

### 2026-06-16: Heat warning issued for Tři Dvory, Czech Republic

Czech heat warning for Tři Dvory predicts temps over 31 °C (up to 34 °C) on June 19‑21, urging hydration and reduced outdoor activity.

2 sources. https://clstr.news/cluster/heat-warning-issued-for-ti-dvory-czech-republic

### 2026-06-15: Czech experts warn high blood pressure raises heart attack risk in heat

Study links hypertension to most heart attacks; Czech doctors urge hydration, careful activity and blood‑pressure monitoring during upcoming heat wave.

2 sources. https://clstr.news/cluster/czech-experts-warn-high-blood-pressure-raises-heart-attack-risk-in-heat

### 2026-06-15: Czech Republic faces tropical heat wave with temperatures up to 35 °C

Czech forecasts predict a heat wave reaching up to 35 °C with high humidity. Health officials urge seniors and children to stay hydrated, limit sun exposure, and monitor for heat‑related illness.

3 sources. https://clstr.news/cluster/czech-republic-faces-tropical-heat-wave-with-temperatures-up-to-35-c

### 2026-06-12: Czech weekend weather: temperatures rise, strong winds expected

Czech weekend forecast calls for temperatures in the low‑mid 20s°C, occasional showers and gusty winds up to 55 km/h, with cooler conditions returning early next week.

3 sources. https://clstr.news/cluster/czech-weekend-weather-temperatures-rise-strong-winds-expected

### 2026-06-09: Czech Republic records first tropical night of year and faces upcoming rainstorm wave

Czech Republic saw its first tropical night at 20.1 °C in Prague and now faces a rainstorm wave with up to 25 mm of rain and temps 14‑22 °C.

3 sources. https://clstr.news/cluster/czech-republic-records-first-tropical-night-of-year-and-faces-upcoming-rainstorm-wave

### 2026-06-04: Czech Republic sees mixed rain and rising weekend temps as heat advisory for outdoor sport issued

Czech forecasts rain Thursday then clear, warmer weekend up to 25 °C. Experts advise safe outdoor exercise: avoid midday, stay hydrated, wear light gear, and acclimatize to heat.

2 sources. https://clstr.news/cluster/czech-republic-sees-mixed-rain-and-rising-weekend-temps-as-heat-advisory-for-outdoor-sport-issued

### 2026-06-03: Czech Republic braces for sharp temperature swing and rising cooling demand

Czech weather forecasts a ten‑degree temperature drop this weekend, while heat waves boost electricity use. DZ Dražice/NIBE offers efficient air‑conditioners and heat pumps to meet rising cooling demand.

5 sources. https://clstr.news/cluster/czech-republic-braces-for-sharp-temperature-swing-and-rising-cooling-demand

### 2026-06-01: Czech Republic forecast expects alternating rain and sunshine this week

Czech weather this week: rain and thunderstorms early, sunny with highs up to 27 °C mid‑week, then mixed clouds and light showers toward the weekend.

5 sources. https://clstr.news/cluster/czech-republic-forecast-expects-alternating-rain-and-sunshine-this-week

### 2026-05-17: Czech Republic to see warmer mid‑May weather with possible thunderstorms

Czech forecast shows a cold start (0‑5 °C) then warming to 20‑26 °C with occasional thunderstorms.

3 sources. https://clstr.news/cluster/czech-republic-to-see-warmer-midmay-weather-with-possible-thunderstorms

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Cite as: Central Europe heatwave intensifies, impacts widen. CLSTR, https://clstr.news/situations/czech-republic-spring-weather-forecasts