Japan expects a mix of extreme heat and unstable weather on July 27, with temperatures reaching 39 °C in some regions [1].
These conditions present a dual challenge for the country, as residents in the south face dangerous heat levels while those in the north deal with atmospheric instability and sudden storms.
In Tōhoku and Hokuriku, the forecast predicts cloud cover with scattered rain and thunderstorms [1]. TBS NEWS DIG said clouds are likely to spread across these regions, leading to localized rain and thunder [1]. Meanwhile, the Kanto region is expected to see rain starting in the evening, with some areas potentially experiencing localized heavy downpours [1].
Severe heat continues to grip central and southern Japan. In Kyushu, the cities of Kurume in Fukuoka Prefecture and Hita in Oita Prefecture are forecast to reach a high of 39 °C [1]. Nagoya is expected to hit 37 °C [1], and Osaka is forecast to reach 36 °C [1].
Other regional highs include 33 °C in Tokyo [1] and 30 °C in Niigata [1]. In the north, temperatures remain lower, with Aomori forecast at 28 °C [1], Sapporo at 26 °C [1], and Morioka at 26 °C [1]. Sendai is expected to reach 25 °C [1], while Kushiro is forecast at 21 °C [1].
Meteorologists attribute the volatile weather to atmospheric instability, which is driving the afternoon thunderstorms, and a persistent heat wave fueling the high temperatures across much of the archipelago [1].
“Temperatures are expected to reach 39 °C in Kyushu and Chubu”
The simultaneous occurrence of extreme heat in the south and atmospheric instability in the north highlights the volatile nature of the Japanese summer. When temperatures approach 40 °C, the risk of heatstroke increases significantly, requiring public health alerts and increased energy demand for cooling, while the threat of localized heavy rain in Kanto and Tōhoku can lead to flash flooding or transportation disruptions.
