Philipsburg Weather in September
What's the weather like in Philipsburg (Sint Maarten) in September 2025?
The climate in Philipsburg during September can be summarized as very hot, humid and wet.
September is in the fall / autumn in Philipsburg and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (89°F), whilst at night 25°C (78°F) is normal.
| Daytime temperature | 31.5°C 88.6°F |
|---|---|
| Nightly temperature | 25.4°C 77.6°F |
| Average temperature | 28.4°C 83.1°F |
| Daily sunshine | 8.2 hrs |
| Avg rainfall | 129 mm 5.1 ins |
| Rainy days | 19 days |
| Sea temperature | 28.9°C 84°F |
| Humidity | 77% |
| Windspeed | 17.6kph 11 mph |
On average September is the wettest month of the year in Philipsburg with around 129mm 5.1 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 8.2 hours of sunshine per day.
September temperatures in Philipsburg
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 Philipsburg in September 2025.
Other monthly averages
Best places to visit in September
Philipsburg weather stats
| Hottest month: | August | 31.2°C 88.2°F |
|---|---|---|
| Driest month: | February | 43mm 1.7ins |
| Sunniest month: | January | 9hrs |
| Coldest month: | January | 28.3°C 82.9°F |
| Wettest month: | September | 129mm 5.1ins |
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