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