Average annual temperature is 18.1 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -0.3 °C
Number of sunny days: 212 days
Number of rainy days: 153 days
Look at detailed online map of San Telmo
* Weather data for San Telmo 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) | 32.7 | 36.6 | 35.2 | 27.9 | 23.0 | 23.0 | 25.5 | 26.8 | 24.6 | 27.8 | 30.2 | 32.3 |
| Average daytime temperature (°C) | 29.7 | 29.0 | 28.5 | 21.3 | 18.6 | 15.3 | 15.0 | 16.8 | 17.3 | 21.6 | 24.4 | 26.2 |
| Average temperature (°C) | 25.4 | 24.4 | 25.2 | 17.8 | 15.4 | 11.9 | 11.8 | 12.5 | 13.7 | 17.0 | 20.1 | 22.2 |
| Average night temperature (°C) | 22.0 | 20.2 | 22.4 | 14.7 | 12.4 | 8.6 | 8.9 | 9.1 | 10.3 | 12.7 | 15.9 | 18.5 |
| Absolute minimum temperature (°C) | 16.4 | 9.7 | 14.2 | 7.0 | 4.4 | 1.0 | -0.3 | 2.5 | 4.9 | 4.7 | 8.2 | 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 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.2 | 13.3 | 12.3 | 11.2 | 10.3 | 9.9 | 10.1 | 10.9 | 11.9 | 13.0 | 13.9 | 14.4 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 11.6 | 11.1 | 10.4 | 8.5 | 7.3 | 6.7 | 7.1 | 8.1 | 7.0 | 10.4 | 11.1 | 10.9 |
| Precipitation (mm) | 41 | 19 | 139 | 83 | 105 | 24 | 54 | 53 | 50 | 65 | 123 | 154 |
| Sunny days | 20 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 17 | 19 | 17 | 11 |
| Rainy days | 11 | 10 | 13 | 12 | 13 | 12 | 12 | 12 | 13 | 12 | 13 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Telmo during the most sunny months:
The largest precipitation sum in San Telmo is at