Average annual temperature is 16.6 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: -2.9 °C
Number of sunny days: 29 days
Number of rainy days: 335 days
Number of snow days: 1 day
Look at detailed online map of Yilan
* Weather data for Yilan Taiwan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 20.4 | 22.2 | 24.4 | 25.4 | 25.8 | 28.1 | 28.9 | 29.6 | 26.2 | 24.5 | 23.9 | 22.8 |
| Average daytime temperature (°C) | 12.5 | 14.1 | 16.4 | 19.4 | 21.6 | 24.9 | 26.1 | 26.2 | 24.7 | 20.5 | 17.9 | 14.9 |
| Average temperature (°C) | 9.7 | 11.0 | 12.6 | 16.0 | 18.5 | 21.5 | 22.2 | 22.2 | 20.9 | 18.0 | 14.6 | 12.0 |
| Average night temperature (°C) | 7.2 | 8.4 | 9.3 | 13.3 | 16.0 | 18.6 | 18.5 | 18.9 | 17.9 | 16.3 | 12.0 | 9.5 |
| Absolute minimum temperature (°C) | -2.9 | 2.8 | 0.1 | 5.9 | 11.6 | 16.2 | 15.8 | 17.2 | 15.7 | 14.1 | 2.1 | -0.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.8 | 11.3 | 12.0 | 12.7 | 13.3 | 13.6 | 13.5 | 13.0 | 12.3 | 11.6 | 11.0 | 10.6 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 3.7 | 4.3 | 6.0 | 6.7 | 6.9 | 8.2 | 10.2 | 9.5 | 9.3 | 4.3 | 5.9 | 3.7 |
| Precipitation (mm) | 164 | 146 | 152 | 162 | 325 | 283 | 317 | 200 | 653 | 880 | 234 | 209 |
| Sunny days | 3 | 3 | 6 | 3 | 2 | 2 | 1 | 0 | 1 | 0 | 6 | 2 |
| Rainy days | 27 | 25 | 25 | 27 | 29 | 28 | 30 | 31 | 29 | 31 | 24 | 29 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Yilan during the most sunny months:
The largest precipitation sum in Yilan is at