Average annual temperature is 20.3 °C
Absolute maximum temperature: 28.7 °C
Absolute minimum temperature: 13.8 °C
Number of sunny days: 342 days
Number of rainy days: 23 days
Look at detailed online map of Puerto San Martín
* Weather data for Puerto 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) | 27.3 | 27.9 | 28.7 | 28.1 | 24.9 | 22.4 | 22.6 | 22.5 | 22.2 | 24.4 | 24.0 | 25.5 |
| Average daytime temperature (°C) | 25.3 | 26.6 | 27.0 | 26.7 | 22.7 | 21.3 | 21.4 | 21.3 | 21.5 | 22.5 | 22.8 | 24.1 |
| Average temperature (°C) | 21.6 | 23.4 | 23.5 | 23.5 | 20.0 | 18.7 | 18.3 | 18.2 | 18.1 | 18.9 | 19.2 | 20.6 |
| Average night temperature (°C) | 19.0 | 21.1 | 21.1 | 21.4 | 18.1 | 16.4 | 15.5 | 15.7 | 15.6 | 16.5 | 16.5 | 18.1 |
| Absolute minimum temperature (°C) | 17.6 | 19.2 | 19.7 | 19.6 | 16.5 | 14.7 | 14.1 | 14.3 | 13.8 | 14.9 | 15.3 | 16.2 |
| 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) | 12.8 | 12.5 | 12.2 | 11.8 | 11.5 | 11.3 | 11.4 | 11.7 | 12.0 | 12.4 | 12.7 | 12.9 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 11.3 | 10.7 | 11.0 | 10.8 | 9.5 | 9.3 | 9.5 | 9.7 | 10.1 | 10.9 | 11.1 | 11.6 |
| Precipitation (mm) | 0 | 8 | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Sunny days | 29 | 25 | 27 | 29 | 28 | 28 | 29 | 30 | 27 | 31 | 30 | 29 |
| Rainy days | 2 | 3 | 4 | 1 | 3 | 2 | 2 | 1 | 3 | 0 | 0 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Puerto San Martín is at