Average annual temperature is 21.9 °C
Absolute maximum temperature: 39.5 °C
Absolute minimum temperature: 3.6 °C
Number of sunny days: 171 days
Number of rainy days: 194 days
Look at detailed online map of San Sebastián
* Weather data for San Sebastián Mexico is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 32.2 | 35.1 | 37.5 | 38.5 | 37.2 | 39.5 | 34.8 | 38.8 | 36.2 | 35.3 | 36.4 | 31.1 |
| Average daytime temperature (°C) | 26.1 | 26.9 | 30.5 | 30.8 | 31.9 | 34.3 | 31.5 | 32.7 | 34.2 | 28.5 | 25.9 | 21.9 |
| Average temperature (°C) | 17.4 | 17.5 | 21.2 | 22.6 | 24.1 | 26.7 | 25.1 | 25.3 | 26.1 | 22.0 | 17.9 | 16.3 |
| Average night temperature (°C) | 11.9 | 11.4 | 15.3 | 17.6 | 19.1 | 20.9 | 20.4 | 20.2 | 20.1 | 17.8 | 13.5 | 12.9 |
| Absolute minimum temperature (°C) | 3.6 | 4.2 | 8.2 | 12.1 | 12.9 | 18.7 | 16.7 | 17.8 | 17.9 | 9.9 | 7.1 | 8.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 11.0 | 11.4 | 12.0 | 12.7 | 13.2 | 13.4 | 13.3 | 12.9 | 12.3 | 11.6 | 11.1 | 10.8 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 9.0 | 9.6 | 9.9 | 9.6 | 11.1 | 11.8 | 11.3 | 11.2 | 11.1 | 8.3 | 7.6 | 5.8 |
| Precipitation (mm) | 6 | 3 | 13 | 44 | 61 | 21 | 74 | 40 | 7 | 73 | 7 | 48 |
| Sunny days | 22 | 24 | 20 | 11 | 8 | 14 | 3 | 9 | 14 | 14 | 19 | 13 |
| Rainy days | 9 | 4 | 11 | 19 | 23 | 16 | 28 | 22 | 16 | 17 | 11 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Sebastián is at