Click on a day for an hourly weather forecast
The temperatures in Somerset West in September are quite cold with temperatures between 8°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Somerset West during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Somerset West in September 2025.
If you’re planning to visit Somerset West in the near future, we highly recommend that you review the 14 day weather forecast for Somerset West before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 26° / 16° | 2 | 29 | 0 | 27 mm | Perfect | Somerset West in January |
| February | 27° / 16° | 1 | 27 | 0 | 21 mm | Perfect | Somerset West in February |
| March | 25° / 15° | 2 | 29 | 0 | 36 mm | Perfect | Somerset West in March |
| April | 23° / 13° | 3 | 27 | 0 | 73 mm | Perfect | Somerset West in April |
| May | 20° / 11° | 5 | 26 | 0 | 114 mm | Good | Somerset West in May |
| June | 17° / 9° | 8 | 23 | 0 | 211 mm | Ok | Somerset West in June |
| July | 17° / 8° | 6 | 25 | 0 | 139 mm | Good | Somerset West in July |
| August | 17° / 8° | 6 | 25 | 0 | 158 mm | Good | Somerset West in August |
| September | 18° / 8° | 5 | 25 | 0 | 92 mm | Good | Somerset West in September |
| October | 21° / 10° | 3 | 28 | 0 | 61 mm | Good | Somerset West in October |
| November | 23° / 12° | 3 | 27 | 0 | 62 mm | Perfect | Somerset West in November |
| December | 25° / 14° | 2 | 29 | 0 | 34 mm | Perfect | Somerset West in December |