Average annual temperature is 24.5 °C
Absolute maximum temperature: 44.3 °C
Absolute minimum temperature: 3.4 °C
Number of sunny days: 227 days
Number of rainy days: 138 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) | 43.5 | 40.8 | 34.4 | 32.6 | 29.9 | 30.0 | 32.2 | 38.1 | 38.1 | 44.2 | 44.3 | 42.8 |
| Average daytime temperature (°C) | 36.8 | 33.4 | 32.3 | 26.5 | 24.3 | 23.4 | 23.8 | 28.6 | 30.1 | 33.7 | 34.4 | 34.0 |
| Average temperature (°C) | 30.6 | 28.0 | 27.6 | 21.9 | 19.8 | 18.4 | 18.6 | 21.9 | 23.2 | 27.0 | 28.2 | 28.5 |
| Average night temperature (°C) | 24.9 | 23.0 | 23.3 | 18.1 | 15.9 | 14.5 | 14.1 | 16.1 | 17.7 | 21.1 | 23.1 | 23.9 |
| Absolute minimum temperature (°C) | 19.4 | 14.9 | 19.5 | 13.6 | 11.6 | 3.4 | 5.9 | 10.5 | 8.4 | 14.1 | 12.9 | 17.7 |
| 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) | 11.3 | 10.9 | 10.5 | 8.3 | 6.7 | 7.8 | 8.1 | 10.2 | 9.4 | 9.5 | 9.4 | 9.6 |
| Precipitation (mm) | 99 | 94 | 127 | 118 | 29 | 8 | 3 | 0 | 17 | 40 | 45 | 135 |
| Sunny days | 18 | 13 | 13 | 18 | 22 | 19 | 24 | 31 | 26 | 20 | 14 | 9 |
| Rainy days | 13 | 15 | 18 | 12 | 9 | 11 | 7 | 0 | 4 | 11 | 16 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Telmo is at