Japan heat wave raises heatstroke alerts in Yamagata and Fukushima

In early August 2026, Yamagata City recorded temperatures above 30 °C for more than eight hours, prompting a heat‑stroke alert for the second consecutive day. Although no formal warning was issued, officials urged residents to stay hydrated and avoid outdoor activity during the hottest periods.

In Fukushima Prefecture, Aizuwakamatsu City reached a high of 36.2 °C, marking the first heat‑wave day in 16 days. A heat‑stroke alert, first issued on July 22, remained in force. The region also saw the reopening of Futaba’s beach after a 25‑year closure, but a nearby typhoon generated high waves that forced a swimming ban despite the soaring temperatures.