Average annual temperature is 17.9 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: 1.2 °C
Number of sunny days: 147 days
Number of rainy days: 218 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) | 28.2 | 29.9 | 32.9 | 34.3 | 32.9 | 34.6 | 29.5 | 33.1 | 30.7 | 29.7 | 32.2 | 25.7 |
| Average daytime temperature (°C) | 22.1 | 22.5 | 26.1 | 26.3 | 27.4 | 30.3 | 27.1 | 27.0 | 28.9 | 23.8 | 21.6 | 18.4 |
| Average temperature (°C) | 14.3 | 14.2 | 17.7 | 18.9 | 20.2 | 22.4 | 20.4 | 20.2 | 20.9 | 17.9 | 14.8 | 13.1 |
| Average night temperature (°C) | 8.3 | 7.9 | 11.1 | 13.6 | 14.4 | 15.5 | 15.5 | 15.0 | 14.2 | 13.5 | 10.1 | 9.3 |
| Absolute minimum temperature (°C) | 2.0 | 1.2 | 4.9 | 9.0 | 10.9 | 13.0 | 12.6 | 12.2 | 12.6 | 5.4 | 5.1 | 3.2 |
| 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 | 11.5 | 12.0 | 12.6 | 13.1 | 13.4 | 13.3 | 12.8 | 12.3 | 11.7 | 11.1 | 10.9 |
| 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) | 9.5 | 9.9 | 10.1 | 10.2 | 11.3 | 12.1 | 11.4 | 10.9 | 11.2 | 8.0 | 7.3 | 6.2 |
| Precipitation (mm) | 8 | 15 | 31 | 77 | 49 | 29 | 72 | 67 | 16 | 153 | 52 | 90 |
| Sunny days | 18 | 20 | 18 | 9 | 6 | 17 | 4 | 5 | 16 | 9 | 15 | 10 |
| Rainy days | 13 | 8 | 13 | 21 | 25 | 13 | 27 | 26 | 14 | 22 | 15 | 21 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in San Sebastián is at