Average annual temperature is 13.7 °C
Absolute maximum temperature: 21.3 °C
Absolute minimum temperature: 2.7 °C
Number of sunny days: 38 days
Number of rainy days: 327 days
Look at detailed online map of San José Las Islas
* Weather data for San José Las Islas 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) | 19.2 | 20.8 | 21.3 | 20.2 | 21.1 | 20.7 | 20.4 | 20.1 | 20.6 | 19.0 | 19.7 | 19.4 |
| Average daytime temperature (°C) | 17.3 | 18.5 | 17.8 | 18.0 | 18.5 | 18.6 | 18.7 | 18.5 | 18.4 | 18.0 | 18.1 | 17.6 |
| Average temperature (°C) | 11.6 | 12.5 | 13.2 | 13.6 | 14.5 | 14.7 | 14.6 | 14.5 | 14.5 | 14.4 | 14.0 | 12.3 |
| Average night temperature (°C) | 6.6 | 7.0 | 8.6 | 8.6 | 10.1 | 10.5 | 11.0 | 10.7 | 10.8 | 11.2 | 10.5 | 7.5 |
| Absolute minimum temperature (°C) | 3.4 | 4.7 | 5.1 | 6.1 | 7.6 | 9.1 | 8.5 | 8.0 | 8.9 | 9.4 | 7.3 | 2.7 |
| 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 | 13.0 | 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 | 11.4 | 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) | 10.3 | 10.7 | 10.5 | 11.2 | 10.6 | 10.0 | 9.1 | 9.4 | 9.6 | 8.4 | 9.4 | 10.1 |
| Precipitation (mm) | 26 | 28 | 79 | 183 | 168 | 317 | 300 | 204 | 261 | 391 | 66 | 25 |
| Sunny days | 10 | 10 | 1 | 0 | 1 | 0 | 2 | 1 | 0 | 0 | 3 | 10 |
| Rainy days | 21 | 18 | 30 | 30 | 30 | 30 | 29 | 30 | 30 | 31 | 27 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San José Las Islas is at