Click on a day for an hourly weather forecast
The temperatures in Suffolk in September are usually low and can range between 13°C and 19°C.
You can expect about 3 to 8 days of rain in Suffolk 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 Suffolk in September 2025.
If you’re planning to visit Suffolk in the near future, we highly recommend that you review the 14 day weather forecast for Suffolk before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 3° | 9 | 18 | 4 | 77 mm | Awful | Suffolk in January |
| February | 7° / 3° | 8 | 16 | 5 | 73 mm | Awful | Suffolk in February |
| March | 10° / 4° | 6 | 24 | 1 | 62 mm | Ok | Suffolk in March |
| April | 12° / 6° | 4 | 26 | 0 | 43 mm | Ok | Suffolk in April |
| May | 15° / 8° | 5 | 26 | 0 | 69 mm | Good | Suffolk in May |
| June | 18° / 11° | 5 | 25 | 0 | 76 mm | Good | Suffolk in June |
| July | 20° / 14° | 5 | 26 | 0 | 91 mm | Good | Suffolk in July |
| August | 21° / 15° | 5 | 26 | 0 | 79 mm | Good | Suffolk in August |
| September | 19° / 13° | 4 | 26 | 0 | 55 mm | Good | Suffolk in September |
| October | 15° / 10° | 7 | 24 | 0 | 88 mm | Ok | Suffolk in October |
| November | 11° / 7° | 7 | 22 | 0 | 78 mm | Bad | Suffolk in November |
| December | 8° / 4° | 8 | 20 | 2 | 95 mm | Awful | Suffolk in December |