Click on a day for an hourly weather forecast
The temperatures in Gillingham in September are usually low and can range between 10°C and 18°C.
You can expect about 3 to 8 days of rain in Gillingham 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 Gillingham in September 2025.
If you’re planning to visit Gillingham in the near future, we highly recommend that you review the 14 day weather forecast for Gillingham before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 2° | 8 | 20 | 3 | 80 mm | Awful | Gillingham in January |
| February | 8° / 2° | 8 | 18 | 3 | 72 mm | Awful | Gillingham in February |
| March | 10° / 3° | 5 | 25 | 1 | 57 mm | Ok | Gillingham in March |
| April | 13° / 4° | 4 | 26 | 0 | 52 mm | Ok | Gillingham in April |
| May | 16° / 7° | 5 | 26 | 0 | 60 mm | Good | Gillingham in May |
| June | 19° / 10° | 5 | 25 | 0 | 69 mm | Good | Gillingham in June |
| July | 21° / 12° | 5 | 26 | 0 | 71 mm | Good | Gillingham in July |
| August | 20° / 12° | 6 | 25 | 0 | 76 mm | Good | Gillingham in August |
| September | 18° / 10° | 4 | 26 | 0 | 50 mm | Good | Gillingham in September |
| October | 15° / 8° | 7 | 24 | 0 | 97 mm | Ok | Gillingham in October |
| November | 10° / 5° | 8 | 22 | 0 | 90 mm | Bad | Gillingham in November |
| December | 8° / 4° | 8 | 21 | 2 | 95 mm | Awful | Gillingham in December |