Click on a day for an hourly weather forecast
The temperatures in Farnborough 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 Farnborough 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 Farnborough in September 2025.
If you’re planning to visit Farnborough in the near future, we highly recommend that you review the 14 day weather forecast for Farnborough before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 2° | 7 | 21 | 3 | 57 mm | Awful | Farnborough in January |
| February | 8° / 3° | 7 | 17 | 4 | 56 mm | Awful | Farnborough in February |
| March | 11° / 3° | 5 | 25 | 2 | 43 mm | Bad | Farnborough in March |
| April | 14° / 5° | 4 | 26 | 1 | 37 mm | Good | Farnborough in April |
| May | 16° / 7° | 4 | 28 | 0 | 48 mm | Good | Farnborough in May |
| June | 19° / 11° | 4 | 26 | 0 | 70 mm | Good | Farnborough in June |
| July | 21° / 13° | 4 | 27 | 0 | 61 mm | Good | Farnborough in July |
| August | 21° / 13° | 4 | 27 | 0 | 58 mm | Good | Farnborough in August |
| September | 19° / 11° | 3 | 27 | 0 | 38 mm | Good | Farnborough in September |
| October | 15° / 9° | 5 | 26 | 0 | 64 mm | Good | Farnborough in October |
| November | 10° / 6° | 6 | 24 | 0 | 63 mm | Ok | Farnborough in November |
| December | 8° / 4° | 7 | 22 | 2 | 64 mm | Awful | Farnborough in December |