Click on a day for an hourly weather forecast
The temperatures in Sandnessjoen in August are usually low and can range between 12°C and 14°C.
You can expect about 3 to 8 days of rain in Sandnessjoen 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 Sandnessjoen in August 2026.
If you’re planning to visit Sandnessjoen in the near future, we highly recommend that you review the 14 day weather forecast for Sandnessjoen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -2° | 9 | 10 | 12 | 142 mm | Awful | Sandnessjoen in January |
| February | 1° / -2° | 7 | 7 | 13 | 124 mm | Awful | Sandnessjoen in February |
| March | 2° / 0° | 11 | 5 | 15 | 163 mm | Awful | Sandnessjoen in March |
| April | 4° / 2° | 9 | 11 | 10 | 117 mm | Awful | Sandnessjoen in April |
| May | 8° / 6° | 8 | 19 | 4 | 88 mm | Awful | Sandnessjoen in May |
| June | 11° / 9° | 8 | 22 | 0 | 98 mm | Bad | Sandnessjoen in June |
| July | 14° / 11° | 8 | 23 | 0 | 129 mm | Ok | Sandnessjoen in July |
| August | 14° / 12° | 7 | 24 | 0 | 132 mm | Ok | Sandnessjoen in August |
| September | 12° / 10° | 11 | 19 | 0 | 194 mm | Bad | Sandnessjoen in September |
| October | 8° / 7° | 12 | 18 | 2 | 168 mm | Awful | Sandnessjoen in October |
| November | 5° / 3° | 12 | 13 | 5 | 162 mm | Awful | Sandnessjoen in November |
| December | 3° / 0° | 10 | 12 | 9 | 155 mm | Awful | Sandnessjoen in December |