Average annual temperature is 7.1 °C
Absolute maximum temperature: 17.4 °C
Absolute minimum temperature: -3.0 °C
Number of sunny days: 51 days
Number of rainy days: 314 days
Look at detailed online map of San Martín
* Weather data for San Martín 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) | 15.1 | 14.8 | 15.4 | 14.4 | 15.0 | 13.5 | 17.3 | 17.3 | 16.9 | 17.4 | 16.8 | 15.3 |
| Average daytime temperature (°C) | 12.3 | 12.7 | 12.8 | 12.9 | 13.0 | 12.6 | 14.3 | 14.7 | 14.0 | 14.4 | 14.0 | 13.8 |
| Average temperature (°C) | 6.8 | 7.4 | 7.3 | 7.0 | 7.0 | 5.6 | 6.1 | 6.7 | 7.2 | 8.0 | 8.1 | 8.5 |
| Average night temperature (°C) | 2.7 | 3.9 | 3.6 | 2.7 | 2.7 | 0.3 | 0.0 | 1.1 | 2.4 | 3.4 | 4.1 | 4.8 |
| Absolute minimum temperature (°C) | 0.8 | 1.5 | -1.1 | -0.8 | -0.3 | -3.0 | -2.9 | -1.9 | -0.5 | 0.1 | 0.1 | 2.7 |
| 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) | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 | 11.6 | 11.8 | 12.0 | 12.3 | 12.6 | 12.7 |
| 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) | 9.1 | 9.0 | 9.0 | 9.9 | 10.1 | 10.6 | 10.7 | 10.8 | 10.8 | 10.4 | 9.6 | 9.3 |
| Precipitation (mm) | 157 | 213 | 178 | 92 | 102 | 13 | 11 | 43 | 95 | 133 | 209 | 188 |
| Sunny days | 0 | 0 | 0 | 1 | 5 | 15 | 17 | 9 | 2 | 1 | 1 | 0 |
| Rainy days | 31 | 28 | 31 | 29 | 26 | 15 | 14 | 22 | 28 | 30 | 29 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Martín is at