Average annual temperature is 19.4 °C
Absolute maximum temperature: 44.2 °C
Absolute minimum temperature: -0.6 °C
Number of sunny days: 333 days
Number of rainy days: 32 days
Look at detailed online map of San Juan
* Weather data for San Juan 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) | 39.2 | 40.7 | 37.5 | 33.0 | 27.5 | 24.0 | 24.6 | 31.3 | 33.6 | 36.6 | 38.0 | 44.2 |
| Average daytime temperature (°C) | 34.5 | 34.0 | 31.2 | 25.6 | 21.2 | 17.0 | 16.6 | 21.4 | 23.2 | 27.7 | 31.7 | 34.0 |
| Average temperature (°C) | 27.8 | 26.9 | 25.7 | 19.2 | 14.5 | 10.6 | 9.3 | 13.4 | 15.5 | 19.9 | 23.7 | 27.1 |
| Average night temperature (°C) | 20.8 | 19.9 | 20.2 | 12.8 | 8.5 | 5.1 | 3.6 | 6.6 | 8.5 | 12.1 | 15.3 | 19.6 |
| Absolute minimum temperature (°C) | 17.0 | 8.2 | 10.8 | 6.5 | 4.9 | -0.3 | -0.6 | 1.0 | 4.1 | 5.2 | 6.1 | 11.5 |
| 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) | 13.9 | 13.2 | 12.3 | 11.3 | 10.5 | 10.1 | 10.3 | 11.0 | 11.9 | 12.9 | 13.7 | 14.2 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 12.4 | 11.8 | 10.4 | 9.9 | 9.2 | 8.6 | 8.8 | 9.9 | 10.6 | 11.8 | 12.5 | 12.6 |
| Precipitation (mm) | 9 | 1 | 5 | 11 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 |
| Sunny days | 20 | 24 | 24 | 27 | 30 | 30 | 31 | 31 | 28 | 29 | 28 | 31 |
| Rainy days | 11 | 4 | 7 | 3 | 1 | 0 | 0 | 0 | 2 | 2 | 2 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Juan is at