Average annual temperature is 22.4 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: 13.3 °C
Number of sunny days: 83 days
Number of rainy days: 282 days
Look at detailed online map of San Guillén
* Weather data for San Guillén Ecuador is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 30.5 | 30.9 | 31.4 | 30.9 | 32.1 | 32.1 | 33.9 | 34.8 | 36.8 | 37.0 | 35.3 | 33.9 |
| Average daytime temperature (°C) | 27.0 | 27.5 | 26.9 | 26.9 | 29.7 | 30.4 | 31.3 | 32.6 | 34.3 | 32.9 | 32.1 | 28.9 |
| Average temperature (°C) | 20.7 | 21.0 | 20.9 | 21.0 | 22.4 | 22.7 | 23.2 | 23.4 | 24.5 | 23.5 | 23.2 | 22.3 |
| Average night temperature (°C) | 16.5 | 17.1 | 16.8 | 16.9 | 17.6 | 16.6 | 16.9 | 16.4 | 17.6 | 17.6 | 17.3 | 17.9 |
| Absolute minimum temperature (°C) | 13.3 | 15.0 | 14.2 | 14.9 | 15.3 | 13.8 | 13.8 | 13.9 | 15.3 | 15.5 | 14.7 | 16.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.3 | 12.2 | 12.1 | 12.0 | 11.9 | 11.9 | 11.9 | 12.0 | 12.1 | 12.2 | 12.3 | 12.4 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 8.6 | 9.0 | 7.9 | 7.7 | 10.2 | 10.9 | 10.8 | 10.9 | 11.2 | 9.6 | 10.6 | 8.9 |
| Precipitation (mm) | 105 | 205 | 257 | 373 | 135 | 14 | 33 | 13 | 13 | 94 | 35 | 156 |
| Sunny days | 6 | 0 | 0 | 0 | 4 | 16 | 17 | 19 | 15 | 1 | 4 | 1 |
| Rainy days | 25 | 28 | 31 | 30 | 27 | 14 | 14 | 12 | 15 | 30 | 26 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Guillén is at