Weather in Osaka in August

August in Osaka is a hot month. Plan the serious walking for morning. The rest of the day wants shade and a slower pace.

In Japan, this is how Osaka actually wears August, not how a country centroid would. August is the peak of the warm side of the year in Osaka. If you wanted the gentlest heat, this is not that month.

Osaka
Average temp
30°C

26–34°C

Rainfall
113 mm

Showers likely

Sunshine
7.1 h

hours per day

What to expect

Daytime

Hot days in Osaka. Ruins, markets and hills are a morning job. Midday sightseeing is how people remember August for the wrong reason.

Nights stay warm. Air-con, if you can get it, is part of the brief. A jumper for August in Osaka is almost always a waste of bag space.

Rain

Mixed skies in Osaka in August. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.

Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.

Evening

Evenings stay warm.

What to pack

  • Sun protection

  • Rain jacket

Where to stay in Osaka

Dates are a starting point for August.

All hotels in Osaka

Travel guides for Osaka

What to read before you book.

All travel guides in Osaka

Average weather in Osaka

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 28 Aug 2026265 places covered

Similar weather in August

Other destinations whose August averages sit close to this one.

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FAQs about Osaka

Climate averages for Osaka, 1991–2020.

The best time to visit Osaka is between May and October, the most comfortable stretch of the year on these averages.

August is the hottest month, with an average around 30°C.

June is the wettest month, with about 185 mm of rain.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.