Weather in Osaka in September
September in Osaka is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
In Japan, this is how Osaka actually wears September, not how a country centroid would. Compared with August and January, September sits in the middle of Osaka's year.
- Average temp
- 26°C
22–30°C
- Rainfall
- 146 mm
Showers likely
- Sunshine
- 5.5 h
hours per day
What to expect
Daytime
Warm days in Osaka in September. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
September is the wet side of the year in Osaka, the wettest stretch on these averages. Days can be heavy. Plans that cannot survive rain are the wrong plans.
This is not a reason to skip Osaka if you like the place. It is a reason to pack for weather and to stop treating every grey hour as a failed holiday.
Evening
Evenings stay warm.
What to pack
Rain jacket
Where to stay in Osaka
Dates are a starting point for September.
Travel guides for Osaka
What to read before you book.
Average weather in Osaka
TemperatureRainfall
Similar weather in September
Other destinations whose September 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.
