Average annual temperature is 14.7 °C
Absolute maximum temperature: 26.6 °C
Absolute minimum temperature: 6.9 °C
Number of sunny days: 60 days
Number of rainy days: 305 days
Look at detailed online map of San Juan de Ilumán
* Weather data for San Juan de Ilumán 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) | 20.2 | 20.5 | 21.0 | 19.6 | 20.8 | 20.7 | 23.7 | 25.7 | 26.6 | 26.2 | 23.5 | 23.8 |
| Average daytime temperature (°C) | 17.4 | 19.3 | 18.1 | 18.0 | 18.3 | 18.3 | 20.3 | 21.8 | 23.6 | 23.0 | 21.0 | 20.7 |
| Average temperature (°C) | 13.4 | 14.2 | 14.0 | 14.0 | 14.2 | 13.5 | 14.6 | 15.3 | 16.2 | 16.2 | 15.5 | 15.7 |
| Average night temperature (°C) | 10.3 | 10.3 | 10.9 | 10.6 | 10.8 | 9.4 | 10.2 | 9.9 | 10.0 | 11.2 | 11.5 | 11.9 |
| Absolute minimum temperature (°C) | 7.8 | 8.0 | 8.5 | 8.3 | 9.2 | 6.9 | 8.0 | 7.9 | 7.3 | 8.4 | 9.6 | 9.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 9.8 | 10.4 | 8.4 | 9.1 | 9.5 | 10.3 | 10.8 | 10.5 | 10.9 | 9.3 | 10.1 | 9.6 |
| Precipitation (mm) | 117 | 121 | 371 | 242 | 184 | 77 | 42 | 29 | 11 | 113 | 166 | 105 |
| Sunny days | 3 | 2 | 0 | 0 | 0 | 5 | 8 | 16 | 14 | 5 | 2 | 5 |
| Rainy days | 28 | 26 | 31 | 30 | 31 | 25 | 23 | 15 | 16 | 26 | 28 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan de Ilumán is at