Okayama Weather in May
What's the weather like in Okayama (Okayama) in May 2025?
The climate in Okayama during May can be summarized as warm and damp.
May is in the spring in Okayama and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 13°C (56°F) is normal.
| Daytime temperature | 23.6°C 74.5°F |
|---|---|
| Nightly temperature | 13.4°C 56.1°F |
| Average temperature | 18.5°C 65.3°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 114 mm 4.5 ins |
| Rainy days | 14 days |
| Sea temperature | 18.6°C 65.6°F |
| Humidity | 70% |
| Windspeed | 7.6kph 5 mph |
On average May is the 4th wettest month of the year in Okayama with around 114mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 14 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May temperatures in Okayama
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Okayama in May 2024.
Other monthly averages
Okayama weather stats
| Hottest month: | August | 31.9°C 89.4°F |
|---|---|---|
| Driest month: | December | 32mm 1.3ins |
| Sunniest month: | August | 7.5hrs |
| Coldest month: | January | 8.3°C 46.9°F |
| Wettest month: | September | 191mm 7.5ins |
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