Click on a day for an hourly weather forecast
The weather in Geilo in August is very cold with temperatures between 4°C and 14°C, warm clothes are a must.
You can expect rain for roughly half of the month of August in Geilo. 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 Geilo in August 2026.
If you’re planning to visit Geilo in the near future, we highly recommend that you review the 14 day weather forecast for Geilo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -8° / -14° | 6 | 6 | 21 | 69 mm | Awful | Geilo in January |
| February | -6° / -14° | 5 | 5 | 20 | 52 mm | Awful | Geilo in February |
| March | -3° / -11° | 7 | 7 | 19 | 54 mm | Awful | Geilo in March |
| April | 1° / -8° | 5 | 10 | 16 | 43 mm | Awful | Geilo in April |
| May | 6° / -2° | 7 | 13 | 11 | 71 mm | Awful | Geilo in May |
| June | 13° / 3° | 7 | 21 | 1 | 100 mm | Bad | Geilo in June |
| July | 16° / 5° | 9 | 22 | 0 | 114 mm | Ok | Geilo in July |
| August | 14° / 4° | 9 | 22 | 0 | 115 mm | Ok | Geilo in August |
| September | 10° / 1° | 7 | 20 | 3 | 94 mm | Awful | Geilo in September |
| October | 3° / -3° | 8 | 8 | 15 | 91 mm | Awful | Geilo in October |
| November | -2° / -8° | 6 | 5 | 20 | 80 mm | Awful | Geilo in November |
| December | -7° / -12° | 7 | 4 | 22 | 80 mm | Awful | Geilo in December |