How Hot Will Japan Get This Summer? Here's What We Know so FarーNHK WORLD-JAPAN NEWS

Why It Matters

Higher and earlier summer heat increases risks of heat illness, strains public health and energy systems, and could amplify economic impacts on tourism, labor productivity and disaster response planning. Monitoring forecasts and following prevention guidance will be critical to reduce health crises and infrastructure stress.

Summary

Japan has already seen unseasonably high May temperatures, with multiple cities recording May records and readings more typical of July, driven by persistent high-pressure systems bringing hot, dry southerly flows. The Japan Meteorological Agency’s three-month outlook shows a 70%+ chance of above-average temperatures across much of the country from June to August, with El Niño likely to reinforce warmer conditions and a potentially busier typhoon season. Meteorologists warn the heat surge may persist after a brief cold plunge and urge vigilance as humidity rises. Officials and experts recommend monitoring official heat-stress alerts and adopting preventive measures like hydration, electrolyte replacement, light clothing, shade, and minimizing time in hot cars or sun-exposed interiors.

Original Description

NHK World meteorologist Jonathan Oh breaks down the long-term forecast and offers up a few tips for staying safe when temperatures soar.

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