Graaff-Reinet Weather in September
What's the weather like in Graaff-Reinet (Eastern Cape) in September 2025?
The climate in Graaff-Reinet during September can be summarized as mild and dry.
September is in the spring in Graaff-Reinet and is typically the 5th coldest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 8°C (45°F) is normal.
| Daytime temperature | 22.8°C 73°F |
|---|---|
| Nightly temperature | 7.5°C 45.4°F |
| Average temperature | 15.1°C 59.2°F |
| Daily sunshine | 9 hrs |
| Avg rainfall | 13 mm 0.5 ins |
| Rainy days | 4 days |
| Sea temperature | 18.7°C 65.7°F |
| Humidity | 48% |
| Windspeed | 11.5kph 7 mph |
On average September is the 2nd driest month of the year in Graaff-Reinet with around 13mm 0.5 inches of rain making it a 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 9 hours of sunshine per day.
September temperatures in Graaff-Reinet
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 Graaff-Reinet in September 2025.
Other monthly averages
Best places to visit in September
Graaff-Reinet weather stats
| Hottest month: | January | 30.6°C 87.1°F |
|---|---|---|
| Driest month: | June | 13mm 0.5ins |
| Sunniest month: | August | 9.1hrs |
| Coldest month: | July | 18.2°C 64.8°F |
| Wettest month: | March | 52mm 2ins |
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