Ichikawa Weather in September
What's the weather like in Ichikawa (Chiba) in September 2025?
The climate in Ichikawa during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Ichikawa and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (80°F), whilst at night 20°C (67°F) is normal.
| Daytime temperature | 26.4°C 79.5°F |
|---|---|
| Nightly temperature | 19.6°C 67.3°F |
| Average temperature | 23°C 73.4°F |
| Daily sunshine | 4.2 hrs |
| Avg rainfall | 176 mm 6.9 ins |
| Rainy days | 19 days |
| Sea temperature | 25.3°C 77.6°F |
| Humidity | 78% |
| Windspeed | 10.4kph 7 mph |
On average September is the wettest month of the year in Ichikawa with around 176mm 6.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.2 hours of sunshine per day.
September temperatures in Ichikawa
September rainfall
September 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 Ichikawa in September 2025.
Other monthly averages
Best places to visit in September
Ichikawa weather stats
| Hottest month: | August | 30.4°C 86.7°F |
|---|---|---|
| Driest month: | January | 44mm 1.7ins |
| Sunniest month: | January | 6.3hrs |
| Coldest month: | January | 9.4°C 48.9°F |
| Wettest month: | September | 176mm 6.9ins |
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