Click on a day for an hourly weather forecast
The temperatures in Barnstaple in August are usually low and can range between 12°C and 18°C.
You can expect about 3 to 8 days of rain in Barnstaple 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 Barnstaple in August 2025.
If you’re planning to visit Barnstaple in the near future, we highly recommend that you review the 14 day weather forecast for Barnstaple before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 3° | 10 | 17 | 3 | 133 mm | Awful | Barnstaple in January |
| February | 8° / 3° | 10 | 15 | 4 | 113 mm | Awful | Barnstaple in February |
| March | 10° / 4° | 8 | 22 | 1 | 92 mm | Bad | Barnstaple in March |
| April | 12° / 5° | 6 | 24 | 1 | 71 mm | Ok | Barnstaple in April |
| May | 15° / 7° | 6 | 25 | 0 | 77 mm | Good | Barnstaple in May |
| June | 17° / 10° | 7 | 23 | 0 | 98 mm | Ok | Barnstaple in June |
| July | 19° / 12° | 6 | 25 | 0 | 96 mm | Good | Barnstaple in July |
| August | 18° / 12° | 7 | 24 | 0 | 103 mm | Ok | Barnstaple in August |
| September | 17° / 11° | 5 | 25 | 0 | 77 mm | Good | Barnstaple in September |
| October | 14° / 9° | 8 | 23 | 0 | 122 mm | Ok | Barnstaple in October |
| November | 10° / 6° | 9 | 20 | 0 | 141 mm | Bad | Barnstaple in November |
| December | 8° / 5° | 9 | 20 | 2 | 145 mm | Awful | Barnstaple in December |