Bitung Weather in September
What's the weather like in Bitung (North Sulawesi) in September 2025?
The climate in Bitung during September can be summarized as hot, humid and wet.
September is in the fall / autumn in Bitung and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a steamy 29°C (84°F), whilst at night 22°C (71°F) is normal.
| Daytime temperature | 29°C 84.1°F |
|---|---|
| Nightly temperature | 21.7°C 71°F |
| Average temperature | 25.3°C 77.5°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 140 mm 5.5 ins |
| Rainy days | 9 days |
| Sea temperature | 28.5°C 83.3°F |
| Humidity | 75% |
| Windspeed | 8.6kph 5 mph |
On average September is the 2nd driest month of the year in Bitung with around 140mm 5.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.6 hours of sunshine per day.
September temperatures in Bitung
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 Bitung in September 2025.
Other monthly averages
Best places to visit in September
Bitung weather stats
| Hottest month: | May | 30.1°C 86.2°F |
|---|---|---|
| Driest month: | August | 130mm 5.1ins |
| Sunniest month: | November | 7.2hrs |
| Coldest month: | November | 28.2°C 82.8°F |
| Wettest month: | January | 400mm 15.7ins |
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