Weather in Osaka-shi for August 2025

In August, Osaka, Japan experiences the peak of its summer season, characterized by hot and humid weather. At the beginning of the month, temperatures typically range from 26° to 34°, with high humidity levels making it feel even warmer.

The city often sees clear skies in the morning, but by the afternoon, the heat can lead to the formation of thunderstorms. These sudden downpours are usually brief but can be intense, providing a temporary respite from the heat.

As the month progresses, the weather remains consistently hot. By the end of August, temperatures still hover between 25° and 33°. The humidity remains high, often exceeding 70%, which can make outdoor activities quite uncomfortable.

The frequency of afternoon thunderstorms may decrease slightly, but the occasional typhoon can bring heavy rain and strong winds to the region. These typhoons are more common in late August and can disrupt travel plans, so it's advisable to keep an eye on weather forecasts.

Despite the challenging weather conditions, August is a vibrant time in Osaka, with numerous summer festivals and events. Visitors should stay hydrated, wear light clothing, and take breaks in air-conditioned spaces to cope with the heat and humidity.