Average annual temperature is 26.9 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: 16.6 °C
Number of sunny days: 136 days
Number of rainy days: 229 days
Look at detailed online map of San Juan La Isla
* Weather data for San Juan La Isla Guatemala is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 35.9 | 36.0 | 36.8 | 38.6 | 38.1 | 35.6 | 35.7 | 35.1 | 34.9 | 33.8 | 33.5 | 35.9 |
| Average daytime temperature (°C) | 32.8 | 33.5 | 35.1 | 36.2 | 35.5 | 33.2 | 33.4 | 33.3 | 33.3 | 31.9 | 31.4 | 32.5 |
| Average temperature (°C) | 25.7 | 26.0 | 27.3 | 28.3 | 28.5 | 27.0 | 27.6 | 27.5 | 27.1 | 26.2 | 26.1 | 26.1 |
| Average night temperature (°C) | 20.7 | 21.0 | 21.9 | 22.8 | 23.6 | 23.1 | 23.8 | 23.7 | 23.3 | 22.6 | 22.4 | 21.7 |
| Absolute minimum temperature (°C) | 16.6 | 19.3 | 20.5 | 21.6 | 22.2 | 21.9 | 21.7 | 21.1 | 21.8 | 21.0 | 19.2 | 17.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.4 | 11.7 | 12.1 | 12.5 | 12.8 | 13.0 | 12.9 | 12.6 | 12.2 | 11.8 | 11.5 | 11.3 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.4 | 10.8 | 11.2 | 11.4 | 11.0 | 10.3 | 10.9 | 10.2 | 10.2 | 9.6 | 9.8 | 10.3 |
| Precipitation (mm) | 2 | 1 | 19 | 31 | 98 | 133 | 96 | 138 | 140 | 191 | 69 | 2 |
| Sunny days | 24 | 24 | 19 | 15 | 8 | 1 | 1 | 1 | 1 | 4 | 13 | 25 |
| Rainy days | 7 | 4 | 12 | 15 | 23 | 29 | 30 | 30 | 29 | 27 | 17 | 6 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan La Isla is at