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The temperatures in Sundsvall in August are usually low and can range between 11°C and 19°C.
You can expect about 3 to 8 days of rain in Sundsvall 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 Sundsvall in August 2026.
If you’re planning to visit Sundsvall in the near future, we highly recommend that you review the 14 day weather forecast for Sundsvall before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -4° / -7° | 3 | 10 | 18 | 71 mm | Awful | Sundsvall in January |
| February | -3° / -7° | 3 | 9 | 17 | 50 mm | Awful | Sundsvall in February |
| March | 1° / -4° | 5 | 11 | 15 | 50 mm | Awful | Sundsvall in March |
| April | 7° / 1° | 6 | 17 | 8 | 42 mm | Bad | Sundsvall in April |
| May | 13° / 5° | 6 | 24 | 2 | 65 mm | Bad | Sundsvall in May |
| June | 17° / 9° | 5 | 25 | 0 | 67 mm | Good | Sundsvall in June |
| July | 20° / 12° | 6 | 25 | 0 | 86 mm | Good | Sundsvall in July |
| August | 19° / 11° | 6 | 25 | 0 | 81 mm | Good | Sundsvall in August |
| September | 14° / 7° | 5 | 25 | 0 | 72 mm | Good | Sundsvall in September |
| October | 7° / 3° | 7 | 22 | 3 | 84 mm | Awful | Sundsvall in October |
| November | 2° / -1° | 7 | 16 | 8 | 68 mm | Awful | Sundsvall in November |
| December | -2° / -5° | 5 | 9 | 16 | 88 mm | Awful | Sundsvall in December |