Click on a day for an hourly weather forecast
The weather in Winchester in September is very hot. The average temperatures are between 24°C and 34°C, drinking water regularly is advisable.
There shouldn't be any rainy days in in Winchester during September. Having said that, the days are very hot in September so hanging out outside is more recomanded during the after noons and evening time.
Our weather forecast can give you a great sense of what weather to expect in Winchester in September 2025.
If you’re planning to visit Winchester in the near future, we highly recommend that you review the 14 day weather forecast for Winchester before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 12° / 4° | 2 | 29 | 0 | 25 mm | Ok | Winchester in January |
| February | 14° / 6° | 1 | 27 | 0 | 26 mm | Good | Winchester in February |
| March | 19° / 11° | 1 | 30 | 0 | 16 mm | Good | Winchester in March |
| April | 24° / 15° | 1 | 29 | 0 | 7 mm | Perfect | Winchester in April |
| May | 30° / 19° | 1 | 30 | 0 | 8 mm | Good | Winchester in May |
| June | 37° / 25° | 0 | 30 | 0 | 2 mm | Ok | Winchester in June |
| July | 39° / 28° | 1 | 30 | 0 | 17 mm | Bad | Winchester in July |
| August | 38° / 28° | 0 | 31 | 0 | 16 mm | Bad | Winchester in August |
| September | 34° / 24° | 0 | 30 | 0 | 6 mm | Ok | Winchester in September |
| October | 25° / 16° | 1 | 30 | 0 | 11 mm | Perfect | Winchester in October |
| November | 17° / 9° | 0 | 30 | 0 | 11 mm | Good | Winchester in November |
| December | 11° / 4° | 1 | 30 | 0 | 26 mm | Ok | Winchester in December |