
Sierra de San Juan Biosphere Reserve
- Annual mean
- 24.1 °C
- Warmest month
- June
- Wettest month
- August
Twelve month analysis of temperature, precipitation, wind, and daylight averages
Annual climate patterns at Islas Marietas National Park are defined by long term monthly averages of temperature, precipitation, humidity, wind speed, and daylight hours. These records rely on a single representative point coordinate using data from 1991 to 2020. Understanding these consistent atmospheric trends provides a comprehensive look at the environmental rhythms governing this coastal area throughout the calendar year.

Long term monthly temperature ranges and average daily precipitation rates across twelve months
Analyze long term monthly averages for temperature, daily precipitation rates, humidity, wind speed, and daylight hours.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 23.5 °C20° to 28° | 1 mm/day | 71.7% | 3.9 m/s | 10.9 hours |
| February | 23.3 °C19.7° to 27.6° | 0.9 mm/day | 70.9% | 4 m/s | 11.3 hours |
| March | 23.5 °C19.9° to 27.7° | 0.3 mm/day | 68.5% | 4 m/s | 11.9 hours |
| April | 24.4 °C20.9° to 28.4° | 0.1 mm/day | 67.8% | 3.9 m/s | 12.5 hours |
| May | 26 °C22.7° to 29.7° | 0.3 mm/day | 69.3% | 3.6 m/s | 13 hours |
| June | 26.9 °C24° to 30.4° | 4.8 mm/day | 76.8% | 3.5 m/s | 13.2 hours |
| July | 27.5 °C25.2° to 30.8° | 10 mm/day | 79.9% | 3.1 m/s | 13.1 hours |
| August | 27.7 °C25.6° to 30.7° | 11.1 mm/day | 81.3% | 3.3 m/s | 12.7 hours |
| September | 27.5 °C25.4° to 30.3° | 11.3 mm/day | 82.6% | 3.7 m/s | 12.1 hours |
| October | 27.4 °C24.9° to 30.9° | 4.6 mm/day | 78.9% | 3.5 m/s | 11.5 hours |
| November | 26.1 °C22.9° to 30.1° | 1.2 mm/day | 75% | 3.5 m/s | 11 hours |
| December | 24.2 °C20.6° to 28.4° | 0.7 mm/day | 74% | 3.8 m/s | 10.8 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparing long-term monthly averages for temperature, precipitation, humidity, wind, and daylight duration.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Compare monthly temperature, precipitation, and regional atmospheric patterns across diverse protected landscapes.




Deepen your understanding of Islas Marietas National Park by examining its specific geographic features and protected area boundaries. This detailed view supports informed atlas exploration and provides essential context for appreciating its role as a national park within Nayarit, contributing to a richer understanding of regional protected lands.