Average annual temperature is 21.8 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: 14.6 °C
Number of sunny days: 55 days
Number of rainy days: 310 days
Look at detailed online map of Alto San Juan
* Weather data for Alto San Juan Peru 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 | 28.8 | 30.4 | 29.6 | 27.9 | 27.7 | 28.9 | 30.3 | 31.8 | 31.8 | 30.5 | 31.0 |
| Average daytime temperature (°C) | 25.8 | 26.3 | 27.3 | 27.4 | 26.3 | 25.9 | 27.2 | 28.2 | 28.9 | 29.2 | 27.2 | 28.0 |
| Average temperature (°C) | 21.2 | 21.3 | 21.7 | 21.9 | 21.5 | 20.6 | 21.3 | 22.0 | 22.4 | 23.1 | 22.1 | 22.8 |
| Average night temperature (°C) | 17.9 | 18.2 | 18.2 | 18.0 | 18.0 | 16.6 | 17.1 | 17.6 | 18.0 | 19.2 | 19.0 | 19.6 |
| Absolute minimum temperature (°C) | 15.6 | 17.0 | 16.3 | 15.8 | 15.9 | 14.6 | 15.5 | 16.0 | 16.2 | 17.2 | 16.9 | 17.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum 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 |
| Daylight mean duration (h) | 12.7 | 12.5 | 12.2 | 11.9 | 11.6 | 11.5 | 11.6 | 11.8 | 12.0 | 12.3 | 12.6 | 12.8 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 7.5 | 7.8 | 8.0 | 9.4 | 9.5 | 9.5 | 10.0 | 10.2 | 9.9 | 9.2 | 7.8 | 8.5 |
| Precipitation (mm) | 320 | 194 | 138 | 116 | 153 | 18 | 37 | 48 | 64 | 154 | 349 | 206 |
| Sunny days | 3 | 1 | 1 | 6 | 5 | 15 | 9 | 9 | 3 | 2 | 0 | 1 |
| Rainy days | 28 | 27 | 30 | 24 | 26 | 15 | 22 | 22 | 27 | 29 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Alto San Juan is at