Click on a day for an hourly weather forecast
The temperatures in West London in September are usually low and can range between 12°C and 20°C.
The wather in West London 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 West London in September 2025.
If you’re planning to visit West London in the near future, we highly recommend that you review the 14 day weather forecast for West London before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 2° | 5 | 23 | 3 | 38 mm | Bad | West London in January |
| February | 8° / 3° | 6 | 19 | 4 | 38 mm | Bad | West London in February |
| March | 11° / 4° | 4 | 27 | 1 | 29 mm | Ok | West London in March |
| April | 14° / 6° | 3 | 27 | 0 | 29 mm | Good | West London in April |
| May | 17° / 8° | 4 | 27 | 0 | 40 mm | Good | West London in May |
| June | 20° / 11° | 3 | 27 | 0 | 57 mm | Good | West London in June |
| July | 22° / 14° | 4 | 27 | 0 | 51 mm | Good | West London in July |
| August | 22° / 14° | 4 | 27 | 0 | 50 mm | Good | West London in August |
| September | 20° / 12° | 2 | 28 | 0 | 31 mm | Good | West London in September |
| October | 15° / 9° | 5 | 26 | 0 | 40 mm | Good | West London in October |
| November | 11° / 6° | 4 | 25 | 0 | 38 mm | Ok | West London in November |
| December | 8° / 4° | 5 | 24 | 2 | 44 mm | Bad | West London in December |