Japan warns of dangerous heatwave as temperatures forecast to hit 38C
NHK reports widespread high temperatures from Kyushu to Tohoku, with Toyama, Niigata, and Yamanashi prefectures expected to reach 38 degrees Celsius on July 15, 2026.
Japan is bracing for a dangerous heatwave on July 15, 2026, with temperatures forecast to rise across a wide area stretching from Kyushu to Tohoku. According to reports from NHK, Toyama, Niigata, and Yamanashi prefectures are expected to reach maximum temperatures of 38 degrees Celsius, posing a significant risk to public health.
The extreme heat comes amid a sharp increase in heat-related illnesses nationwide. Data from the National Fire and Disaster Management Agency indicates that over 4,500 heatstroke cases were reported as of July 14, a figure more than three times higher than the previous week. This surge in cases has prompted urgent calls for preventative measures across the country.
Authorities are advising residents to utilise air conditioning appropriately and to hydrate frequently to mitigate the risks associated with the high temperatures. The forecast for Toyama, Niigata, and Yamanashi to hit 38 degrees Celsius marks a particularly severe threshold, classifying the conditions as dangerous heat that requires strict adherence to safety guidelines.
While the heatwave is expected to affect a broad geographic range, specific attention is being drawn to the central and northern regions where the temperature spikes are most pronounced. The Japan Meteorological Agency and NHK are monitoring the situation closely as the heat persists across the nation.
Public health officials emphasise that the current statistics are subject to revision as data is finalised by the National Fire and Disaster Management Agency. Residents are encouraged to remain vigilant and follow official guidance to prevent heatstroke during this period of extreme weather.
