Greece faces high fire risk and a helicopter crash in Sifnos

Greece weather forecast Sifnos helicopter crash wildfire risk Greece civil protection warnings heatwave Greece

Greece is facing high fire risk and rising temperatures. The General Secretariat for Civil Protection has placed eleven regions, including Attica, Boeotia, Euboea, Argolida, Corinthia, Phocis, Phthiotis, Magnesia, Achaea, Ilia, and Evros, under a Category 3 high fire risk alert for Tuesday, August 18, 2026. Authorities have placed relevant services on high alert and advised citizens to avoid activities that could cause accidental fires, such as burning dry vegetation or using machinery that produces sparks.

Weather forecasts from the National Meteorological Service indicate a slight increase in temperatures, with mainland areas potentially reaching between 35 and 37 degrees Celsius. While much of the country will experience sunny weather, local showers and thunderstorms are expected in the mountainous regions of the mainland and Crete.

Separately, a private helicopter crashed in the Tholos area of Sifnos on Monday, August 17, 2026, near the island's helipad. The crash triggered a fire. Initial reports indicate that three occupants were found unconscious, though some unconfirmed reports have mentioned fatalities. The Fire Service and rescue teams from Syros have been deployed to the scene to manage the fire and assist survivors.

Entities

Fire Service · General Secretariat for Civil Protection · Greece · Hellenic National Meteorological Service · Ministry of Climate Crisis and Civil Protection · National Meteorological Service · Sifnos · Thessaly

Claims

What the coverage asserts, and how many sources carry each claim.

[● 2 SOURCES] Local rain and isolated thunderstorms are possible in the mountainous areas of Western Greece on Monday. www.naftemporiki.gr
[● 2 SOURCES] Strong winds are expected to weaken across most of Greece starting Monday, August 17, 2026. www.naftemporiki.gr
[● 2 SOURCES] Temperatures in Thessaly, Eastern Central Greece, Euboea, and Eastern Peloponnese are expected to reach up to 36 degrees Celsius on Monday, August 17, 2026. www.naftemporiki.gr
[○ 1 SOURCE] A ban on transit, stay, and movement of persons and vehicles is in effect for NATURA areas and forest ecosystems for the duration of August 16, 2026. www.larissapress.gr
[○ 1 SOURCE] The fire risk category for Magnesia and the Sporades is set at level 3 (high) for Sunday, August 16, 2026. www.larissapress.gr
[● 10 SOURCES] Local rain and isolated thunderstorms are expected in the mountainous areas of western Greece during the afternoon. rpn.gr · sinidisi.gr · emvolos.gr · www.paraskhnio.gr · www.press-gr.com · +2 more
[● 9 SOURCES] Temperatures in mainland areas are expected to reach between 35 and 36 degrees Celsius. rpn.gr · sinidisi.gr · emvolos.gr · www.paraskhnio.gr · www.press-gr.com · +1 more
[● 5 SOURCES] Citizens are advised to avoid activities that could cause fires, such as burning dry grass or using machinery that produces sparks. www.ertnews.gr · www.parapolitika.gr
[● 5 SOURCES] Field burning is strictly prohibited during the fire prevention period. www.ertnews.gr · www.parapolitika.gr
[● 5 SOURCES] Twenty regions in Greece are under a high fire risk category (Level 3) for Monday, August 17, 2026. www.ertnews.gr · www.parapolitika.gr
[● 6 SOURCES] Greece will experience generally clear weather on Monday, August 17, 2026, with some passing clouds in mainland areas. sinidisi.gr · emvolos.gr · www.paraskhnio.gr · www.efsyn.gr
[● 5 SOURCES] Authorities have been placed on high alert to respond to potential fire incidents in the high-risk regions. www.ertnews.gr · www.parapolitika.gr