Click on a day for an hourly weather forecast
The temperatures in Sandnes in September are usually low and can range between 13°C and 15°C.
You can expect rain for roughly half of the month of September in Sandnes. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Sandnes in September 2026.
If you’re planning to visit Sandnes in the near future, we highly recommend that you review the 14 day weather forecast for Sandnes before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 2° | 10 | 15 | 6 | 136 mm | Awful | Sandnes in January |
| February | 4° / 2° | 10 | 12 | 7 | 123 mm | Awful | Sandnes in February |
| March | 5° / 3° | 9 | 18 | 4 | 106 mm | Awful | Sandnes in March |
| April | 8° / 5° | 6 | 22 | 2 | 62 mm | Bad | Sandnes in April |
| May | 11° / 8° | 7 | 24 | 0 | 103 mm | Bad | Sandnes in May |
| June | 14° / 11° | 5 | 25 | 0 | 84 mm | Good | Sandnes in June |
| July | 16° / 14° | 7 | 24 | 0 | 128 mm | Ok | Sandnes in July |
| August | 17° / 14° | 10 | 21 | 0 | 177 mm | Ok | Sandnes in August |
| September | 15° / 13° | 9 | 21 | 0 | 164 mm | Ok | Sandnes in September |
| October | 11° / 9° | 11 | 20 | 0 | 175 mm | Bad | Sandnes in October |
| November | 8° / 7° | 11 | 18 | 1 | 158 mm | Bad | Sandnes in November |
| December | 6° / 4° | 12 | 16 | 4 | 173 mm | Awful | Sandnes in December |