Click on a day for an hourly weather forecast
The temperatures in Luton in September are usually low and can range between 11°C and 19°C.
You can expect about 3 to 8 days of rain in Luton 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 Luton in September 2025.
If you’re planning to visit Luton in the near future, we highly recommend that you review the 14 day weather forecast for Luton before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 2° | 7 | 20 | 4 | 61 mm | Awful | Luton in January |
| February | 7° / 2° | 8 | 16 | 5 | 63 mm | Awful | Luton in February |
| March | 10° / 3° | 4 | 25 | 2 | 52 mm | Bad | Luton in March |
| April | 14° / 5° | 4 | 25 | 1 | 47 mm | Good | Luton in April |
| May | 16° / 8° | 5 | 26 | 0 | 71 mm | Good | Luton in May |
| June | 19° / 11° | 5 | 25 | 0 | 95 mm | Good | Luton in June |
| July | 22° / 13° | 5 | 26 | 0 | 79 mm | Good | Luton in July |
| August | 21° / 14° | 5 | 26 | 0 | 78 mm | Good | Luton in August |
| September | 19° / 11° | 3 | 27 | 0 | 43 mm | Good | Luton in September |
| October | 15° / 9° | 6 | 25 | 0 | 66 mm | Good | Luton in October |
| November | 10° / 6° | 6 | 24 | 0 | 61 mm | Ok | Luton in November |
| December | 7° / 3° | 7 | 21 | 2 | 71 mm | Awful | Luton in December |