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The temperatures in Capetown in September are quite cold with temperatures between 9°C and 24°C, warm clothes are a must.
The wather in Capetown in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Capetown in September 2025.
If you’re planning to visit Capetown in the near future, we highly recommend that you review the 14 day weather forecast for Capetown before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 13° / 4° | 9 | 22 | 0 | 217 mm | Bad | Capetown in January |
| February | 13° / 3° | 8 | 20 | 0 | 198 mm | Bad | Capetown in February |
| March | 13° / 3° | 11 | 20 | 0 | 247 mm | Bad | Capetown in March |
| April | 15° / 4° | 6 | 24 | 0 | 112 mm | Good | Capetown in April |
| May | 18° / 5° | 3 | 28 | 0 | 65 mm | Good | Capetown in May |
| June | 21° / 8° | 2 | 28 | 0 | 34 mm | Good | Capetown in June |
| July | 24° / 9° | 0 | 31 | 0 | 5 mm | Perfect | Capetown in July |
| August | 24° / 10° | 0 | 31 | 0 | 5 mm | Perfect | Capetown in August |
| September | 24° / 9° | 2 | 28 | 0 | 33 mm | Perfect | Capetown in September |
| October | 20° / 7° | 4 | 27 | 0 | 113 mm | Good | Capetown in October |
| November | 16° / 5° | 6 | 24 | 0 | 165 mm | Good | Capetown in November |
| December | 12° / 4° | 10 | 21 | 0 | 228 mm | Bad | Capetown in December |