Pematangsiantar Weather in September
What's the weather like in Pematangsiantar (North Sumatra) in September 2024?
The climate in Pematangsiantar during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Pematangsiantar and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a muggy 30°C (86°F), whilst at night 20°C (68°F) is normal.
| Daytime temperature | 29.8°C 85.6°F |
|---|---|
| Nightly temperature | 19.9°C 67.7°F |
| Average temperature | 24.8°C 76.6°F |
| Daily sunshine | 6.6 hrs |
| Avg rainfall | 330 mm 13 ins |
| Rainy days | 16 days |
| Sea temperature | 29.5°C 85.1°F |
| Humidity | 86% |
| Windspeed | 9kph 6 mph |
On average September is the 2nd wettest month of the year in Pematangsiantar with around 330mm 13 inches of rain making it a very wet time to visit. This rainfall is typically spread over 16 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 Pematangsiantar
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 Pematangsiantar in September 2024.
Other monthly averages
Best places to visit in September
Pematangsiantar weather stats
| Hottest month: | May | 30.4°C 86.7°F |
|---|---|---|
| Driest month: | February | 178mm 7ins |
| Sunniest month: | February | 8.2hrs |
| Coldest month: | January | 29.2°C 84.6°F |
| Wettest month: | October | 344mm 13.5ins |
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