Average annual temperature is 21.9 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: 14.0 °C
Number of sunny days: 8 days
Number of rainy days: 357 days
Look at detailed online map of Alto San Martin
* Weather data for Alto San Martin 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) | 28.8 | 28.6 | 27.9 | 30.3 | 29.5 | 28.3 | 28.7 | 30.9 | 31.8 | 31.6 | 30.1 | 30.1 |
| Average daytime temperature (°C) | 26.0 | 26.0 | 25.5 | 26.6 | 26.7 | 26.4 | 27.2 | 28.5 | 29.2 | 28.8 | 27.7 | 27.4 |
| Average temperature (°C) | 21.4 | 21.6 | 21.3 | 21.7 | 21.9 | 21.1 | 21.4 | 21.9 | 22.6 | 23.0 | 22.7 | 22.5 |
| Average night temperature (°C) | 17.8 | 18.1 | 18.3 | 17.9 | 18.2 | 16.5 | 16.1 | 16.3 | 17.5 | 18.6 | 18.9 | 18.8 |
| Absolute minimum temperature (°C) | 15.7 | 15.5 | 15.8 | 15.9 | 16.4 | 14.0 | 14.6 | 14.6 | 15.2 | 16.5 | 17.1 | 16.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.4 | 12.3 | 12.1 | 12.0 | 11.8 | 11.8 | 11.8 | 11.9 | 12.1 | 12.2 | 12.4 | 12.5 |
| 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) | 8.9 | 8.4 | 6.9 | 8.4 | 10.1 | 10.6 | 10.4 | 10.3 | 10.7 | 9.5 | 9.3 | 9.0 |
| Precipitation (mm) | 161 | 261 | 400 | 303 | 355 | 134 | 126 | 107 | 208 | 276 | 331 | 370 |
| Sunny days | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 | 0 | 2 | 0 | 0 |
| Rainy days | 31 | 28 | 31 | 30 | 31 | 30 | 30 | 26 | 30 | 29 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Alto San Martin is at