Click on a day for an hourly weather forecast
The temperatures in Plymouth in August are usually low and can range between 13°C and 18°C.
You can expect about 3 to 8 days of rain in Plymouth 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 Plymouth in August 2025.
If you’re planning to visit Plymouth in the near future, we highly recommend that you review the 14 day weather forecast for Plymouth before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 8° / 5° | 10 | 19 | 1 | 142 mm | Bad | Plymouth in January |
| February | 8° / 5° | 9 | 17 | 2 | 118 mm | Awful | Plymouth in February |
| March | 10° / 5° | 7 | 23 | 1 | 95 mm | Bad | Plymouth in March |
| April | 12° / 6° | 5 | 25 | 0 | 72 mm | Ok | Plymouth in April |
| May | 14° / 8° | 6 | 26 | 0 | 82 mm | Good | Plymouth in May |
| June | 17° / 11° | 6 | 24 | 0 | 95 mm | Good | Plymouth in June |
| July | 18° / 13° | 6 | 25 | 0 | 94 mm | Good | Plymouth in July |
| August | 18° / 13° | 7 | 24 | 0 | 112 mm | Ok | Plymouth in August |
| September | 17° / 12° | 5 | 25 | 0 | 75 mm | Good | Plymouth in September |
| October | 14° / 10° | 8 | 23 | 0 | 149 mm | Ok | Plymouth in October |
| November | 11° / 8° | 9 | 21 | 0 | 150 mm | Bad | Plymouth in November |
| December | 9° / 6° | 10 | 20 | 1 | 154 mm | Bad | Plymouth in December |