Click on a day for an hourly weather forecast
The temperatures in Sidmouth in September are usually low and can range between 12°C and 17°C.
You can expect about 3 to 8 days of rain in Sidmouth 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 Sidmouth in September 2025.
If you’re planning to visit Sidmouth in the near future, we highly recommend that you review the 14 day weather forecast for Sidmouth before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 8° / 5° | 7 | 22 | 2 | 67 mm | Awful | Sidmouth in January |
| February | 8° / 5° | 7 | 20 | 2 | 62 mm | Awful | Sidmouth in February |
| March | 10° / 5° | 6 | 25 | 1 | 48 mm | Ok | Sidmouth in March |
| April | 12° / 6° | 4 | 26 | 0 | 47 mm | Ok | Sidmouth in April |
| May | 14° / 9° | 4 | 27 | 0 | 56 mm | Good | Sidmouth in May |
| June | 17° / 11° | 5 | 26 | 0 | 61 mm | Good | Sidmouth in June |
| July | 19° / 13° | 4 | 27 | 0 | 57 mm | Good | Sidmouth in July |
| August | 19° / 14° | 5 | 26 | 0 | 65 mm | Good | Sidmouth in August |
| September | 17° / 12° | 3 | 27 | 0 | 43 mm | Good | Sidmouth in September |
| October | 15° / 11° | 6 | 25 | 0 | 89 mm | Good | Sidmouth in October |
| November | 11° / 8° | 6 | 24 | 0 | 86 mm | Ok | Sidmouth in November |
| December | 9° / 6° | 6 | 24 | 1 | 73 mm | Ok | Sidmouth in December |