The weather in Okayama in September is hot. The average temperatures are between 21°C and 28°C.
You can expect about 3 to 8 days of rain in Okayama during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Okayama in September 2025.
If you’re planning to visit Okayama in the near future, we highly recommend that you review the 14 day weather forecast for Okayama before you arrive.
Temperatures
28° / 21°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
147
mm
Sun Hours
10.3
Hrs
