Key Facts
• Rainfall observed in parts of Okitama region, Yamagata Prefecture, on August 18, 2025.
• Temperatures reached 33.6°C in Yamagata City and 33.5°C in Oe Town’s Aterazawa.
• All 22 observation points in the prefecture recorded temperatures above 30°C.
• Heatwave expected to persist throughout the week, nearing extreme heat levels.
• Residents advised to stay cautious of heat-related health issues.
Summary
On August 18, 2025, Yamagata Prefecture experienced a mix of weather conditions, with some areas like Okitama receiving rain while temperatures soared across the region. Yamagata City recorded a high of 33.6°C, and Oe Town’s Aterazawa reached 33.5°C, marking a day of intense heat. All 22 observation points in the prefecture reported temperatures exceeding 30°C, classifying it as a midsummer day. The heatwave is expected to continue throughout the week, with temperatures approaching extreme levels. Residents are urged to take precautions to avoid heat-related illnesses.
