Average annual temperature is 22.4 °C
Absolute maximum temperature: 42.3 °C
Absolute minimum temperature: 4.1 °C
Number of sunny days: 230 days
Number of rainy days: 135 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) | 42.3 | 38.5 | 37.5 | 31.8 | 27.9 | 28.0 | 29.0 | 33.1 | 36.4 | 37.0 | 41.3 | 38.5 |
| Average daytime temperature (°C) | 35.3 | 33.4 | 33.2 | 25.6 | 23.5 | 20.7 | 20.9 | 25.3 | 26.4 | 29.9 | 31.0 | 31.5 |
| Average temperature (°C) | 29.3 | 27.3 | 27.8 | 20.9 | 18.6 | 15.7 | 15.7 | 18.6 | 20.2 | 23.3 | 25.0 | 26.1 |
| Average night temperature (°C) | 23.6 | 21.7 | 22.7 | 17.1 | 14.6 | 11.8 | 11.5 | 12.4 | 14.7 | 17.2 | 19.5 | 21.5 |
| Absolute minimum temperature (°C) | 18.8 | 11.4 | 19.6 | 12.6 | 9.0 | 4.3 | 4.1 | 7.7 | 8.1 | 9.9 | 10.6 | 15.3 |
| 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) | 13.7 | 13.1 | 12.3 | 11.4 | 10.7 | 10.4 | 10.5 | 11.1 | 11.9 | 12.8 | 13.5 | 13.9 |
| 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) | 11.8 | 11.5 | 10.0 | 8.7 | 8.0 | 7.6 | 7.6 | 10.3 | 8.6 | 9.7 | 9.6 | 10.0 |
| Precipitation (mm) | 100 | 59 | 115 | 65 | 43 | 7 | 10 | 0 | 13 | 17 | 86 | 149 |
| Sunny days | 17 | 14 | 16 | 13 | 20 | 23 | 26 | 31 | 24 | 22 | 15 | 9 |
| Rainy days | 14 | 14 | 15 | 17 | 11 | 7 | 5 | 0 | 6 | 9 | 15 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Juan during the most sunny months:
The largest precipitation sum in San Juan is at