Click on a day for an hourly weather forecast
The temperatures in Weymouth in August are usually low and can range between 14°C and 17°C.
You can expect about 3 to 8 days of rain in Weymouth during the month of August. 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 Weymouth in August 2025.
If you’re planning to visit Weymouth in the near future, we highly recommend that you review the 14 day weather forecast for Weymouth before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 5° | 8 | 21 | 2 | 92 mm | Awful | Weymouth in January |
| February | 9° / 5° | 9 | 17 | 2 | 73 mm | Awful | Weymouth in February |
| March | 9° / 5° | 5 | 25 | 1 | 53 mm | Ok | Weymouth in March |
| April | 10° / 7° | 4 | 26 | 0 | 49 mm | Ok | Weymouth in April |
| May | 12° / 9° | 4 | 28 | 0 | 46 mm | Ok | Weymouth in May |
| June | 14° / 11° | 4 | 26 | 0 | 60 mm | Good | Weymouth in June |
| July | 16° / 13° | 3 | 28 | 0 | 53 mm | Good | Weymouth in July |
| August | 17° / 14° | 5 | 26 | 0 | 74 mm | Good | Weymouth in August |
| September | 17° / 13° | 4 | 26 | 0 | 55 mm | Good | Weymouth in September |
| October | 15° / 11° | 8 | 23 | 0 | 128 mm | Ok | Weymouth in October |
| November | 12° / 9° | 7 | 23 | 0 | 117 mm | Bad | Weymouth in November |
| December | 10° / 7° | 7 | 22 | 1 | 96 mm | Bad | Weymouth in December |