Postmasburg Weather in September
What's the weather like in Postmasburg (Northern Cape) in September 2025?
The climate in Postmasburg during September can be summarized as mild and very dry.
September is in the spring in Postmasburg and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a comfortable 25°C (77°F), whilst at night 8°C (46°F) is normal.
| Daytime temperature | 25.1°C 77.1°F |
|---|---|
| Nightly temperature | 7.8°C 46°F |
| Average temperature | 16.4°C 61.5°F |
| Daily sunshine | 10.5 hrs |
| Avg rainfall | 7 mm 0.3 ins |
| Rainy days | 2 days |
| Sea temperature | 18°C 64.4°F |
| Humidity | 38% |
| Windspeed | 9.4kph 6 mph |
On average September is the 4th driest month of the year in Postmasburg with around 7mm 0.3 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 10.5 hours of sunshine per day.
September temperatures in Postmasburg
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 Postmasburg in September 2025.
Other monthly averages
Best places to visit in September
Postmasburg weather stats
| Hottest month: | January | 32.3°C 90.1°F |
|---|---|---|
| Driest month: | July | 5mm 0.2ins |
| Sunniest month: | August | 10.7hrs |
| Coldest month: | June | 17.8°C 64°F |
| Wettest month: | March | 67mm 2.6ins |
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