Average annual temperature is 11.5 °C
Absolute maximum temperature: 26.5 °C
Absolute minimum temperature: -3.7 °C
Number of sunny days: 172 days
Number of rainy days: 192 days
Number of snow days: 1 day
Look at detailed online map of San Martín
* Weather data for 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) | 21.7 | 23.6 | 21.9 | 21.8 | 19.2 | 23.2 | 23.8 | 24.3 | 26.4 | 25.5 | 26.1 | 26.5 |
| Average daytime temperature (°C) | 17.4 | 16.6 | 17.8 | 13.3 | 13.2 | 12.9 | 12.5 | 16.1 | 15.9 | 17.1 | 18.6 | 17.9 |
| Average temperature (°C) | 13.7 | 12.8 | 13.7 | 10.3 | 9.8 | 8.6 | 8.2 | 10.6 | 10.6 | 11.8 | 13.9 | 14.0 |
| Average night temperature (°C) | 9.9 | 9.1 | 9.7 | 7.3 | 6.6 | 4.5 | 3.6 | 4.6 | 5.5 | 7.0 | 9.7 | 10.7 |
| Absolute minimum temperature (°C) | 4.6 | 1.0 | 7.6 | 3.5 | 2.0 | -3.7 | -1.4 | -2.5 | -2.7 | 0.5 | 1.8 | 7.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.5 | 12.9 | 12.2 | 11.5 | 10.9 | 10.6 | 10.7 | 11.3 | 11.9 | 12.7 | 13.3 | 13.7 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 10.9 | 10.7 | 10.4 | 8.5 | 8.8 | 9.1 | 9.4 | 10.2 | 10.6 | 10.4 | 10.5 | 9.9 |
| Precipitation (mm) | 111 | 77 | 77 | 130 | 26 | 20 | 5 | 2 | 34 | 49 | 71 | 138 |
| Sunny days | 5 | 3 | 7 | 12 | 18 | 20 | 25 | 28 | 18 | 18 | 11 | 7 |
| Rainy days | 26 | 25 | 24 | 18 | 13 | 9 | 6 | 3 | 12 | 13 | 19 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Martín is at