Click on a day for an hourly weather forecast
The weather in Flims in September is very cold with temperatures between 2°C and 17°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Flims. 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 Flims in September 2026.
If you’re planning to visit Flims in the near future, we highly recommend that you review the 14 day weather forecast for Flims before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -12° | 8 | 4 | 20 | 83 mm | Awful | Flims in January |
| February | 1° / -12° | 7 | 5 | 19 | 65 mm | Awful | Flims in February |
| March | 4° / -8° | 9 | 8 | 15 | 74 mm | Awful | Flims in March |
| April | 9° / -4° | 11 | 11 | 9 | 92 mm | Awful | Flims in April |
| May | 13° / 0° | 17 | 11 | 3 | 153 mm | Awful | Flims in May |
| June | 19° / 4° | 16 | 14 | 0 | 171 mm | Ok | Flims in June |
| July | 21° / 5° | 14 | 17 | 0 | 146 mm | Ok | Flims in July |
| August | 21° / 5° | 13 | 18 | 0 | 176 mm | Ok | Flims in August |
| September | 17° / 2° | 9 | 21 | 0 | 97 mm | Ok | Flims in September |
| October | 12° / -1° | 7 | 20 | 4 | 81 mm | Awful | Flims in October |
| November | 6° / -5° | 7 | 13 | 11 | 87 mm | Awful | Flims in November |
| December | 1° / -10° | 6 | 9 | 17 | 84 mm | Awful | Flims in December |