Average annual temperature is 27.7 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: 18.3 °C
Number of sunny days: 165 days
Number of rainy days: 200 days
Look at detailed online map of Isla San Marcos
* Weather data for Isla San Marcos 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) | 35.3 | 35.6 | 35.4 | 35.7 | 35.4 | 32.7 | 35.1 | 34.4 | 34.7 | 34.3 | 34.1 | 36.2 |
| Average daytime temperature (°C) | 30.9 | 31.7 | 31.5 | 32.6 | 32.5 | 31.7 | 32.7 | 31.7 | 31.5 | 30.5 | 31.6 | 32.8 |
| Average temperature (°C) | 26.3 | 26.6 | 27.3 | 28.4 | 29.0 | 28.4 | 28.5 | 28.1 | 27.9 | 26.9 | 27.4 | 27.3 |
| Average night temperature (°C) | 22.4 | 22.6 | 23.8 | 24.7 | 25.7 | 25.2 | 25.3 | 25.0 | 24.9 | 24.1 | 24.0 | 23.0 |
| Absolute minimum temperature (°C) | 19.5 | 21.1 | 21.5 | 23.3 | 24.2 | 23.1 | 24.1 | 23.5 | 23.8 | 22.0 | 22.1 | 18.3 |
| 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 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.3 | 11.6 | 12.0 | 12.5 | 12.9 | 13.1 | 13.0 | 12.6 | 12.2 | 11.8 | 11.4 | 11.2 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 10.5 | 10.9 | 10.9 | 11.5 | 11.6 | 11.3 | 10.1 | 10.1 | 10.3 | 9.3 | 9.7 | 10.2 |
| Precipitation (mm) | 0 | 0 | 27 | 10 | 33 | 115 | 193 | 231 | 240 | 270 | 57 | 0 |
| Sunny days | 29 | 28 | 14 | 17 | 12 | 2 | 6 | 5 | 3 | 3 | 17 | 29 |
| Rainy days | 2 | 0 | 17 | 13 | 19 | 28 | 25 | 26 | 27 | 28 | 13 | 2 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Isla San Marcos is at