Average annual temperature is 15.8 °C
Absolute maximum temperature: 32.3 °C
Absolute minimum temperature: -4.8 °C
Number of sunny days: 115 days
Number of rainy days: 246 days
Number of snow days: 4 days
Look at detailed online map of Erwan
* Weather data for Erwan China is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 17.7 | 16.0 | 24.1 | 26.6 | 29.7 | 31.8 | 32.3 | 32.3 | 31.6 | 24.9 | 24.5 | 18.4 |
| Average daytime temperature (°C) | 9.3 | 9.3 | 15.8 | 20.0 | 23.8 | 26.8 | 29.4 | 29.3 | 26.1 | 20.4 | 16.6 | 9.8 |
| Average temperature (°C) | 4.9 | 5.9 | 11.5 | 16.0 | 19.6 | 23.0 | 25.5 | 25.3 | 22.5 | 17.0 | 12.2 | 5.9 |
| Average night temperature (°C) | 0.1 | 2.5 | 7.3 | 12.1 | 16.2 | 19.5 | 22.2 | 21.8 | 19.1 | 14.0 | 8.1 | 1.7 |
| Absolute minimum temperature (°C) | -4.8 | -0.9 | 3.3 | 5.8 | 9.8 | 16.5 | 19.8 | 15.9 | 15.2 | 10.7 | 1.3 | -4.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 14.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.5 | 11.2 | 12.0 | 12.9 | 13.6 | 14.0 | 13.8 | 13.2 | 12.3 | 11.5 | 10.7 | 10.3 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 5.1 | 2.8 | 4.4 | 5.4 | 4.5 | 5.8 | 7.5 | 9.4 | 6.7 | 5.3 | 5.4 | 4.5 |
| Precipitation (mm) | 20 | 70 | 75 | 240 | 291 | 307 | 330 | 216 | 108 | 122 | 64 | 69 |
| Sunny days | 20 | 8 | 7 | 6 | 4 | 6 | 4 | 5 | 10 | 11 | 15 | 19 |
| Rainy days | 9 | 19 | 24 | 24 | 27 | 24 | 27 | 26 | 20 | 20 | 15 | 11 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Erwan during the most sunny months:
The largest precipitation sum in Erwan is at