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The temperatures in Swellendam in September are quite cold with temperatures between 8°C and 18°C, warm clothes are a must.
The wather in Swellendam 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 Swellendam in September 2025.
If you’re planning to visit Swellendam in the near future, we highly recommend that you review the 14 day weather forecast for Swellendam before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 28° / 15° | 2 | 29 | 0 | 28 mm | Perfect | Swellendam in January |
| February | 28° / 16° | 1 | 27 | 0 | 19 mm | Perfect | Swellendam in February |
| March | 25° / 15° | 1 | 30 | 0 | 23 mm | Perfect | Swellendam in March |
| April | 21° / 12° | 1 | 29 | 0 | 20 mm | Good | Swellendam in April |
| May | 18° / 10° | 2 | 29 | 0 | 23 mm | Good | Swellendam in May |
| June | 14° / 7° | 3 | 27 | 0 | 44 mm | Good | Swellendam in June |
| July | 14° / 6° | 2 | 28 | 0 | 37 mm | Good | Swellendam in July |
| August | 15° / 6° | 2 | 29 | 0 | 25 mm | Good | Swellendam in August |
| September | 18° / 8° | 1 | 29 | 0 | 20 mm | Good | Swellendam in September |
| October | 22° / 11° | 1 | 30 | 0 | 20 mm | Good | Swellendam in October |
| November | 23° / 11° | 2 | 28 | 0 | 27 mm | Perfect | Swellendam in November |
| December | 26° / 14° | 1 | 30 | 0 | 23 mm | Perfect | Swellendam in December |