Average annual temperature is 15.8 °C
Absolute maximum temperature: 40.0 °C
Absolute minimum temperature: -3.2 °C
Number of sunny days: 241 days
Number of rainy days: 122 days
Number of snow days: 2 days
Look at detailed online map of San Juan
* Weather data for San Juan Spain is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.6 | 19.2 | 26.3 | 32.4 | 30.6 | 35.8 | 40.0 | 39.4 | 31.8 | 31.4 | 22.6 | 18.6 |
| Average daytime temperature (°C) | 10.8 | 12.2 | 19.3 | 24.4 | 22.6 | 27.1 | 34.2 | 33.9 | 25.8 | 22.9 | 17.1 | 12.9 |
| Average temperature (°C) | 5.8 | 6.4 | 12.7 | 16.4 | 16.2 | 20.9 | 26.7 | 26.1 | 19.8 | 17.3 | 12.1 | 8.0 |
| Average night temperature (°C) | 1.7 | 2.0 | 6.8 | 9.5 | 10.7 | 15.8 | 20.4 | 19.5 | 15.1 | 12.8 | 8.0 | 3.9 |
| Absolute minimum temperature (°C) | -2.8 | -3.2 | -2.7 | 2.4 | 7.0 | 10.9 | 16.2 | 13.2 | 9.5 | 6.9 | 2.2 | -0.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.8 | 8.1 | 10.5 | 11.6 | 11.2 | 11.7 | 13.4 | 12.3 | 10.0 | 8.4 | 7.3 | 7.1 |
| Precipitation (mm) | 14 | 16 | 5 | 4 | 76 | 55 | 18 | 11 | 63 | 32 | 11 | 10 |
| Sunny days | 18 | 16 | 25 | 26 | 12 | 13 | 24 | 24 | 19 | 17 | 23 | 24 |
| Rainy days | 12 | 11 | 6 | 4 | 19 | 17 | 7 | 7 | 11 | 14 | 7 | 7 |
| Snow days | 1 | 1 | 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