Average annual temperature is 18.7 °C
Absolute maximum temperature: 45.9 °C
Absolute minimum temperature: -2.1 °C
Number of sunny days: 284 days
Number of rainy days: 81 days
Look at detailed online map of Departamento de San Martín
* Weather data for Departamento de San Martín Argentina is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 38.3 | 38.2 | 37.0 | 30.8 | 25.7 | 26.9 | 24.1 | 30.7 | 30.9 | 33.9 | 37.1 | 45.9 |
| Average daytime temperature (°C) | 33.0 | 32.5 | 30.0 | 25.0 | 20.7 | 15.8 | 16.2 | 20.4 | 22.0 | 26.8 | 30.9 | 32.9 |
| Average temperature (°C) | 26.6 | 25.6 | 24.1 | 18.5 | 13.8 | 9.4 | 9.3 | 12.7 | 15.1 | 19.6 | 23.6 | 26.0 |
| Average night temperature (°C) | 20.5 | 19.1 | 19.0 | 12.9 | 8.5 | 4.7 | 3.9 | 6.6 | 8.9 | 12.5 | 16.3 | 19.6 |
| Absolute minimum temperature (°C) | 16.2 | 10.0 | 9.9 | 5.7 | 3.0 | -2.1 | -0.5 | 2.7 | 5.0 | 6.6 | 5.0 | 12.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.0 | 13.3 | 12.3 | 11.3 | 10.4 | 10.0 | 10.2 | 10.9 | 11.9 | 12.9 | 13.8 | 14.3 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 12.4 | 11.7 | 8.9 | 9.3 | 8.5 | 7.6 | 8.3 | 9.3 | 10.1 | 11.5 | 12.4 | 12.4 |
| Precipitation (mm) | 44 | 14 | 63 | 9 | 3 | 0 | 0 | 1 | 4 | 3 | 3 | 18 |
| Sunny days | 12 | 25 | 13 | 23 | 27 | 29 | 30 | 30 | 28 | 24 | 24 | 19 |
| Rainy days | 19 | 3 | 18 | 7 | 4 | 1 | 1 | 1 | 2 | 7 | 6 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Departamento de San Martín is at