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2026-08-05 05:22 UTC → 2026-08-07 02:38 UTC ·
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Japan heatwave persists – alerts and record streak, cooling gear surge
Japan’s The 2026 Japanese summer heat heatwave has continued intensified. From 13–19 July, a five‑day stretch of 40 °C‑plus temperatures – the longest since records began – was recorded in 37 prefectures, prompting the JMA to intensify through July 2026, label the days “kokushobi” and declare a disaster. Hospital transports for heat‑related illness more than doubled to 10,857, with hyper‑thermia alerts now covering 25 prefectures 14 deaths and record‑breaking “kokushobi” days—temperatures above 40 °C—recorded 321 severe cases reported in multiple regions. The heatwave has caused at least 14 heat‑related deaths, thousands a single week. Health authorities have broadened heat‑stroke alerts to cover most of hospitalisations the country and a sharp rise issued Level‑2 warnings in ambulance transports, while Tokyo logged its first “extremely hot day” warning. Authorities have expanded prevention programmes: a “heat‑stroke Yamagata, Fukushima and Kumamoto, where wet‑bulb globe temperatures approached dangerous levels. Community measures continue, including heat‑stroke prevention ambassador” network trains volunteers in Miyagi, the Japan Meteorological Agency’s Heatstroke Zero project held ambassadors, school seminars at Universal Studios Japan, and doctors in Tokyo issued heat‑adaptation routines that combine diet, light exercise police‑run water‑safety campaigns. Consumer demand for cooling solutions has surged. Retailers report brisk sales of portable air‑conditioners and a 40 °C bathing protocol. Police in the Tokai region warned wave of rising drowning incidents linked to water‑play during the heat, distributing life‑jacket flyers and conducting rescue drills. The market response has accelerated. New low‑tech solutions items such as frozen tenugui towels are promoted for better sleep, while a wave of personal‑cooling devices—neck‑mounted fans, fan‑integrated T‑shirts, ultra‑light “ZERO Like” suits, the ZERA MAX 2.0 waist fan, towels. New high‑tech and air‑conditioned jackets with mist‑hand fans—have wearable products have entered retail. High‑tech offerings include Sony’s REON POCKET 6 neck cooler, Sharp’s ice‑slurry refrigerator, and the market: handheld and mist‑plus fans from Dyson, Sony and Shark; cooling scarves, aromatherapy towels, UV‑blocking umbrellas; Vibram “BREEZANDAL” shoes; cold‑gel primers and chilled facial sprays. Premium personal‑climate devices have also appeared, notably a designer “human refrigerator” priced at several thousand euros. The Do Hiemon Box walk‑in personal cooling booth, now deployed in factories, cabin, marketed as a “human refrigerator,” has sold roughly 200 units to steel mills, construction sites and sites, universities, evacuation shelters. Together, shelters and leisure venues, offering rapid 15 °C interior cooling. Amnesty International has warned that the disaster‑level heatwave constitutes a human‑rights crisis linked to climate inaction. Simultaneously, a “triple‑typhoon” system (Typhoons 13‑15) threatens additional heat‑related risks across central and eastern Japan. Overall, escalating health alerts, expanded community programmes and expanding cooling‑technology a booming market for both low‑ and high‑tech cooling devices illustrate Japan’s mounting challenge in coping with an unprecedented summer heatwave.