Average annual temperature is 16.9 °C
Absolute maximum temperature: 28.6 °C
Absolute minimum temperature: 4.8 °C
Number of sunny days: 29 days
Number of rainy days: 336 days
Look at detailed online map of Río San José
* Weather data for Río San José 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) | 23.7 | 23.6 | 26.6 | 28.6 | 25.9 | 26.5 | 23.0 | 24.2 | 23.0 | 25.7 | 23.5 | 22.9 |
| Average daytime temperature (°C) | 18.9 | 19.0 | 21.5 | 23.1 | 23.4 | 24.1 | 21.7 | 22.3 | 21.8 | 21.2 | 18.9 | 18.0 |
| Average temperature (°C) | 14.5 | 14.7 | 16.6 | 17.6 | 18.6 | 19.5 | 17.8 | 18.0 | 17.5 | 17.4 | 16.1 | 14.6 |
| Average night temperature (°C) | 10.8 | 11.4 | 12.5 | 12.7 | 14.3 | 15.4 | 15.0 | 14.8 | 14.1 | 14.6 | 14.0 | 11.9 |
| Absolute minimum temperature (°C) | 6.6 | 8.6 | 8.9 | 8.3 | 10.7 | 13.2 | 11.8 | 12.3 | 12.6 | 12.3 | 9.6 | 4.8 |
| 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 | 13.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.3 | 11.6 | 12.1 | 12.5 | 12.8 | 13.0 | 12.9 | 12.6 | 12.2 | 11.8 | 11.4 | 11.2 |
| 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) | 9.1 | 8.9 | 10.3 | 11.5 | 11.4 | 10.9 | 10.1 | 9.9 | 10.0 | 8.3 | 5.5 | 7.3 |
| Precipitation (mm) | 91 | 111 | 138 | 74 | 131 | 127 | 238 | 188 | 130 | 286 | 574 | 182 |
| Sunny days | 7 | 8 | 4 | 3 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 4 |
| Rainy days | 24 | 20 | 27 | 27 | 31 | 29 | 31 | 30 | 30 | 31 | 29 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Río San José is at