Sumber Weather in September
What's the weather like in Sumber (Central Java) in September 2025?
The climate in Sumber during September can be summarized as hot, humid and reasonably dry.
September is in the spring in Sumber and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 22°C (71°F) is normal.
| Daytime temperature | 33°C 91.4°F |
|---|---|
| Nightly temperature | 21.8°C 71.2°F |
| Average temperature | 27.4°C 81.3°F |
| Daily sunshine | 10.2 hrs |
| Avg rainfall | 57 mm 2.2 ins |
| Rainy days | 4 days |
| Sea temperature | 28.3°C 82.9°F |
| Humidity | 72% |
| Windspeed | 14.4kph 9 mph |
On average September is the 3rd driest month of the year in Sumber with around 57mm 2.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.2 hours of sunshine per day.
September temperatures in Sumber
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 Sumber in September 2025.
Other monthly averages
Best places to visit in September
Sumber weather stats
| Hottest month: | October | 32.9°C 91.2°F |
|---|---|---|
| Driest month: | July | 43mm 1.7ins |
| Sunniest month: | August | 10.6hrs |
| Coldest month: | July | 31.6°C 88.9°F |
| Wettest month: | January | 352mm 13.9ins |
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