Click on a day for an hourly weather forecast
The temperatures in Gloucester in September are comfortable with low of 17°C and and high up to 25°C.
You can expect about 3 to 8 days of rain in Gloucester 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 Gloucester in September 2025.
If you’re planning to visit Gloucester in the near future, we highly recommend that you review the 14 day weather forecast for Gloucester before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / -2° | 8 | 20 | 3 | 84 mm | Awful | Gloucester in January |
| February | 6° / -2° | 8 | 17 | 3 | 97 mm | Awful | Gloucester in February |
| March | 11° / 2° | 8 | 21 | 2 | 115 mm | Awful | Gloucester in March |
| April | 17° / 8° | 7 | 23 | 0 | 102 mm | Ok | Gloucester in April |
| May | 22° / 13° | 8 | 23 | 0 | 100 mm | Ok | Gloucester in May |
| June | 27° / 18° | 10 | 20 | 0 | 121 mm | Good | Gloucester in June |
| July | 30° / 21° | 11 | 20 | 0 | 124 mm | Ok | Gloucester in July |
| August | 29° / 21° | 10 | 21 | 0 | 135 mm | Ok | Gloucester in August |
| September | 25° / 17° | 7 | 23 | 0 | 106 mm | Good | Gloucester in September |
| October | 19° / 11° | 7 | 24 | 0 | 135 mm | Ok | Gloucester in October |
| November | 12° / 5° | 5 | 25 | 0 | 82 mm | Ok | Gloucester in November |
| December | 8° / 1° | 7 | 23 | 1 | 126 mm | Bad | Gloucester in December |