Northern and Eastern Japan Face Unusually High Temperatures

Northern and eastern Japan are experiencing unusually high temperatures today, with some cities forecast to reach 35 °C ^[1].

This sudden spike in heat creates an immediate public health risk, prompting officials to issue heat-stroke warnings across multiple prefectures. The rapid rise in temperature during early June is atypical for the region, placing stress on residents who have not yet adjusted to summer conditions.

Weather officials forecast maximum temperatures of 35 °C in both Fukushima City and Maebashi City ^[1]. In central Tokyo, the temperature is expected to reach 32 °C ^[1]. The heat is already impacting several areas; by 11 a.m., Iwaizumi Town in Iwate recorded 33.0 °C, while Maebashi City reached 32.9 °C ^[1].

The heatwave extends into northern Japan, where Sapporo City is forecast to hit 31 °C ^[1]. This marks the first "midsummer day" — a term used in Japan for days reaching 30 °C or higher — recorded in Hokkaido this year ^[1]. In total, 144 locations across the country are forecast to experience midsummer days ^[1].

Meteorologists attribute the temperature surge to a combination of strong sunshine and warm air aloft [1, 2]. This atmospheric pattern has driven temperatures up significantly faster than seasonal norms.

The extreme weather has drawn reactions from the public. One high-school student said, "It is really hot today. This temperature from the morning is already a bug," referring to the glitch-like nature of the weather ^[2].

Residents are advised to stay hydrated and use cooling systems to mitigate the risk of heat-related illnesses as the heat persists through the afternoon [1, 2].