Click on a day for an hourly weather forecast
The temperatures in Central London in September are usually low and can range between 12°C and 20°C.
You can expect about 3 to 8 days of rain in Central London 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 Central London in September 2025.
If you’re planning to visit Central London in the near future, we highly recommend that you review the 14 day weather forecast for Central London before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 2° | 7 | 21 | 4 | 56 mm | Awful | Central London in January |
| February | 8° / 3° | 8 | 16 | 4 | 55 mm | Awful | Central London in February |
| March | 11° / 4° | 5 | 25 | 1 | 45 mm | Ok | Central London in March |
| April | 14° / 6° | 3 | 26 | 1 | 37 mm | Good | Central London in April |
| May | 17° / 8° | 4 | 27 | 0 | 49 mm | Good | Central London in May |
| June | 20° / 11° | 4 | 26 | 0 | 71 mm | Good | Central London in June |
| July | 22° / 14° | 4 | 27 | 0 | 63 mm | Good | Central London in July |
| August | 22° / 14° | 4 | 27 | 0 | 61 mm | Good | Central London in August |
| September | 20° / 12° | 3 | 27 | 0 | 39 mm | Good | Central London in September |
| October | 15° / 10° | 5 | 26 | 0 | 65 mm | Good | Central London in October |
| November | 11° / 6° | 6 | 24 | 0 | 51 mm | Ok | Central London in November |
| December | 8° / 4° | 7 | 22 | 3 | 63 mm | Awful | Central London in December |