Average annual temperature is 7.5 °C
Absolute maximum temperature: 27.2 °C
Absolute minimum temperature: -15 °C
Number of sunny days: 144
Number of rainy days: 190
Number of snow days: 31
Average annual precipitation: 805 mm
Look at detailed online map of Trosa
* Weather data for Trosa Sweden is based on climate observations for 2023 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 6 | 8.3 | 9.1 | 13.6 | 20.4 | 27.2 | 23.2 | 21.9 | 23 | 16.7 | 8.9 | 7.4 |
| Average daytime temperature (°C) | 2.9 | 2.9 | 3.3 | 8.5 | 14 | 20.6 | 19.6 | 18.8 | 18.2 | 9.7 | 3.5 | 0.4 |
| Average temperature (°C) | 1.3 | 0.3 | 0.2 | 4.5 | 10.3 | 16.6 | 16.7 | 16.2 | 15.5 | 7.1 | 1.8 | -1.6 |
| Average night temperature (°C) | -0.8 | -2.2 | -3.5 | 0.6 | 6.2 | 12 | 13.4 | 13.7 | 13 | 4.7 | -0.3 | -4.2 |
| Absolute minimum temperature (°C) | -5.9 | -7.5 | -15 | -6.5 | -2.6 | 6.5 | 11.6 | 11.8 | 9.4 | -0.7 | -7.1 | -10.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.1 | 10.4 | 13.1 | 15.7 | 17.9 | 18.5 | 18.3 | 16.6 | 14.1 | 11.5 | 8.9 | 6.8 |
| Daylight mean duration (h) | 7.1 | 9.3 | 11.8 | 14.5 | 16.9 | 18.3 | 17.6 | 15.4 | 12.8 | 10.2 | 7.8 | 6.4 |
| Daylight minimum duration (h) | 6.4 | 8.2 | 10.5 | 13.2 | 15.8 | 17.9 | 16.7 | 14.2 | 11.6 | 9 | 6.8 | 6.2 |
| Sunshine mean duration (h) | 3.9 | 5.5 | 6.1 | 10.7 | 13.3 | 14.4 | 13.8 | 9.6 | 8.1 | 6.4 | 2.8 | 1.5 |
| Precipitation (mm) | 98 | 34 | 86 | 27 | 37 | 24 | 86 | 120 | 59 | 79 | 82 | 72 |
| Sunny days | 9 | 14 | 8 | 14 | 22 | 21 | 5 | 2 | 20 | 10 | 9 | 10 |
| Rainy days | 20 | 9 | 11 | 15 | 9 | 9 | 26 | 29 | 10 | 21 | 15 | 16 |
| Snow days | 2 | 5 | 12 | 1 | 6 | 5 |
The best time to visit Trosa during the most sunny months:
Months with the longest average daylight duration in Trosa:
The largest precipitation sum in Trosa is at