Average annual temperature is 7.4 °C
Absolute maximum temperature: 28.5 °C
Absolute minimum temperature: -17.2 °C
Number of sunny days: 142 days
Number of rainy days: 186 days
Number of snow days: 37 days
Look at detailed online map of Flen
* Weather data for Flen Sweden is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 5.9 | 8.3 | 12.1 | 20.7 | 25.5 | 28.5 | 25.1 | 22.8 | 23.7 | 17.1 | 8.4 | 6.9 |
| Average daytime temperature (°C) | 2.6 | 3.0 | 3.7 | 10.8 | 17.8 | 23.9 | 20.9 | 19.7 | 19.1 | 9.4 | 2.8 | -0.3 |
| Average temperature (°C) | 0.5 | 0.0 | -0.1 | 5.2 | 11.9 | 18.1 | 16.8 | 16.3 | 15.4 | 6.5 | 0.9 | -2.6 |
| Average night temperature (°C) | -1.8 | -2.8 | -4.7 | -0.2 | 5.2 | 11.2 | 12.7 | 13.1 | 11.9 | 3.8 | -1.2 | -5.8 |
| Absolute minimum temperature (°C) | -8.2 | -8.4 | -17.2 | -8.7 | -2.7 | 4.6 | 10.6 | 11.3 | 8.0 | -2.0 | -10.3 | -14.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 13.0 | 15.0 | 17.0 | 18.0 | 18.0 | 16.0 | 14.0 | 11.0 | 8.0 | 6.0 |
| Daylight mean duration (h) | 7.1 | 9.3 | 11.8 | 14.5 | 16.9 | 18.4 | 17.7 | 15.4 | 12.8 | 10.2 | 7.8 | 6.3 |
| Daylight minimum duration (h) | 6.0 | 8.0 | 10.0 | 13.0 | 15.0 | 17.0 | 16.0 | 14.0 | 11.0 | 8.0 | 6.0 | 6.0 |
| Sunshine mean duration (h) | 1.8 | 4.3 | 4.7 | 9.9 | 13.3 | 14.2 | 12.5 | 7.6 | 7.6 | 4.9 | 1.6 | 0.5 |
| Precipitation (mm) | 86 | 31 | 88 | 20 | 22 | 22 | 104 | 146 | 98 | 64 | 80 | 73 |
| Sunny days | 8 | 15 | 6 | 16 | 24 | 24 | 6 | 0 | 15 | 11 | 7 | 10 |
| Rainy days | 17 | 8 | 15 | 13 | 7 | 6 | 25 | 31 | 15 | 20 | 16 | 13 |
| Snow days | 6 | 5 | 10 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 8 |
The best time to visit Flen during the most sunny months:
Months with the longest average daylight duration in Flen:
The largest precipitation sum in Flen is at