Average annual temperature is 7.3 °C
Absolute maximum temperature: 28.3 °C
Absolute minimum temperature: -16.7 °C
Number of sunny days: 152 days
Number of rainy days: 179 days
Number of snow days: 34 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) | 5.8 | 8.4 | 11.9 | 20.4 | 25.1 | 28.3 | 24.5 | 22.9 | 23.6 | 16.8 | 8.2 | 6.8 |
| Average daytime temperature (°C) | 2.4 | 2.8 | 3.5 | 10.6 | 17.6 | 23.7 | 20.6 | 19.5 | 18.9 | 9.2 | 2.6 | -0.5 |
| Average temperature (°C) | 0.4 | -0.1 | -0.2 | 5.2 | 11.9 | 18.0 | 16.6 | 16.2 | 15.2 | 6.3 | 0.7 | -2.8 |
| Average night temperature (°C) | -1.9 | -2.7 | -4.5 | -0.2 | 5.4 | 11.4 | 12.6 | 13.2 | 12.0 | 3.7 | -1.1 | -5.9 |
| Absolute minimum temperature (°C) | -8.0 | -8.5 | -16.7 | -8.7 | -2.5 | 5.1 | 10.3 | 11.2 | 7.8 | -2.4 | -8.0 | -12.8 |
| 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 | 17.0 | 18.4 | 17.7 | 15.4 | 12.8 | 10.2 | 7.7 | 6.3 |
| Daylight minimum duration (h) | 6.0 | 8.0 | 10.0 | 13.0 | 15.0 | 18.0 | 16.0 | 14.0 | 11.0 | 8.0 | 6.0 | 6.0 |
| Sunshine mean duration (h) | 1.9 | 4.2 | 4.7 | 10.0 | 13.4 | 14.2 | 12.7 | 7.7 | 7.7 | 4.9 | 1.6 | 0.6 |
| Precipitation (mm) | 87 | 34 | 85 | 23 | 21 | 16 | 98 | 144 | 99 | 64 | 73 | 74 |
| Sunny days | 10 | 16 | 6 | 16 | 24 | 25 | 6 | 3 | 16 | 12 | 8 | 10 |
| Rainy days | 17 | 6 | 14 | 13 | 7 | 5 | 25 | 28 | 14 | 19 | 16 | 15 |
| Snow days | 4 | 6 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 6 |
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