Click on a day for an hourly weather forecast
The temperatures in Alesund in September are quite cold with temperatures between 7°C and 13°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Alesund. 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 Alesund in September 2025.
If you’re planning to visit Alesund in the near future, we highly recommend that you review the 14 day weather forecast for Alesund before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -5° | 11 | 5 | 18 | 231 mm | Awful | Alesund in January |
| February | 0° / -5° | 10 | 4 | 16 | 187 mm | Awful | Alesund in February |
| March | 3° / -3° | 13 | 5 | 15 | 214 mm | Awful | Alesund in March |
| April | 6° / 0° | 9 | 13 | 9 | 156 mm | Awful | Alesund in April |
| May | 10° / 4° | 11 | 17 | 4 | 126 mm | Awful | Alesund in May |
| June | 14° / 7° | 9 | 21 | 0 | 138 mm | Ok | Alesund in June |
| July | 16° / 9° | 11 | 20 | 0 | 168 mm | Ok | Alesund in July |
| August | 16° / 8° | 11 | 20 | 0 | 202 mm | Ok | Alesund in August |
| September | 13° / 7° | 13 | 17 | 0 | 239 mm | Bad | Alesund in September |
| October | 8° / 3° | 13 | 16 | 2 | 255 mm | Awful | Alesund in October |
| November | 3° / 0° | 12 | 12 | 7 | 225 mm | Awful | Alesund in November |
| December | 0° / -3° | 14 | 4 | 14 | 253 mm | Awful | Alesund in December |