Click on a day for an hourly weather forecast
The temperatures in Conwy in August are usually low and can range between 12°C and 17°C.
You can expect about 3 to 8 days of rain in Conwy 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 Conwy in August 2025.
If you’re planning to visit Conwy in the near future, we highly recommend that you review the 14 day weather forecast for Conwy before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 4° | 12 | 15 | 4 | 134 mm | Awful | Conwy in January |
| February | 7° / 3° | 11 | 14 | 4 | 116 mm | Awful | Conwy in February |
| March | 9° / 4° | 8 | 22 | 2 | 94 mm | Awful | Conwy in March |
| April | 11° / 5° | 6 | 24 | 1 | 73 mm | Ok | Conwy in April |
| May | 13° / 8° | 8 | 23 | 0 | 89 mm | Bad | Conwy in May |
| June | 16° / 10° | 7 | 23 | 0 | 96 mm | Ok | Conwy in June |
| July | 17° / 12° | 7 | 24 | 0 | 114 mm | Ok | Conwy in July |
| August | 17° / 12° | 7 | 24 | 0 | 121 mm | Ok | Conwy in August |
| September | 16° / 11° | 7 | 23 | 0 | 111 mm | Ok | Conwy in September |
| October | 13° / 9° | 9 | 22 | 0 | 139 mm | Bad | Conwy in October |
| November | 10° / 7° | 11 | 19 | 0 | 157 mm | Bad | Conwy in November |
| December | 8° / 5° | 12 | 17 | 2 | 153 mm | Awful | Conwy in December |