Average temperatures, rainfall and packing tips for Osaka, Japan in August
August in Osaka is typically very hot, with average daytime highs around 35°C and nights near 26°C. It is usually the warmest month of the year in Osaka.
August is one of the wetter months in Osaka, with around 184 mm of rain - plan around showers.
If your dates are flexible, the most comfortable months in Osaka are usually April, May, June, October and November.
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In August, Osaka averages a daytime high of about 35°C and a night-time low of around 26°C, based on recent historical data. That makes it the warmest month of the year there.
August is one of the wetter months in Osaka, with around 184 mm of rain - plan around showers.
August is seriously hot in Osaka. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday. If your dates are flexible, the most comfortable months in Osaka are usually April, May, June, October and November.