
Cumberland Island National Seashore
- Annual mean
- 21.2 °C
- Warmest month
- July
- Wettest month
- June
Review long-term trends in temperature, precipitation, humidity, wind, and daylight hours
The climate profile provides a comprehensive twelve-month view of long-term weather averages for a representative coordinate within Gray's Reef National Marine Sanctuary. Captured from 1991 to 2020 NASA POWER data, this record focuses on monthly mean temperature, average minimums and maximums, daily precipitation rates, relative humidity, wind speed, and daylight duration. These measurements establish a baseline for understanding the annual atmospheric patterns at this marine protected area, distinct from seasonal forecasts or daily weather reports.
Monthly temperature ranges and average daily precipitation rates across the annual cycle
Track long-term monthly temperature bounds, average precipitation rates, humidity, wind speed, and calculated daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 14.6 °C5.4° to 20° | 2.9 mm/day | 78.5% | 6.5 m/s | 10.2 hours |
| February | 14.9 °C6.9° to 19.4° | 2.8 mm/day | 79.8% | 6.1 m/s | 10.9 hours |
| March | 16.6 °C8.8° to 20.8° | 2.9 mm/day | 80.3% | 6 m/s | 11.8 hours |
| April | 19.6 °C13.3° to 23.2° | 2.4 mm/day | 80.3% | 5.6 m/s | 12.8 hours |
| May | 23.3 °C18.3° to 26.5° | 2.6 mm/day | 80.6% | 5.4 m/s | 13.6 hours |
| June | 26.3 °C23.5° to 28.8° | 5.1 mm/day | 82.3% | 5.2 m/s | 14 hours |
| July | 27.8 °C25.8° to 29.9° | 4.2 mm/day | 81.9% | 5 m/s | 13.8 hours |
| August | 27.8 °C25.6° to 29.8° | 5.1 mm/day | 80.7% | 4.9 m/s | 13.1 hours |
| September | 26.8 °C23.1° to 29.1° | 4.2 mm/day | 78.1% | 5.8 m/s | 12.2 hours |
| October | 23.6 °C16.7° to 27° | 3.4 mm/day | 75.1% | 5.9 m/s | 11.2 hours |
| November | 19.4 °C11.8° to 23.9° | 2 mm/day | 76.5% | 6.2 m/s | 10.4 hours |
| December | 16.3 °C8.4° to 21.1° | 2.5 mm/day | 79.4% | 6.1 m/s | 10 hours |
Comparative monthly averages for temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Visit the MoriAtlas climate map to compare long-term monthly temperature and precipitation metrics across national parks. This visual interface helps you understand seasonal variations at specific protected area coordinates to deepen your knowledge of global park geography and environmental characteristics.
Explore monthly temperature and precipitation data across diverse protected natural areas.






Delve into the mapped boundaries and natural terrain of this unique marine protected area. MoriAtlas provides a clear look at the submerged sandstone ridges and diverse habitats that define the reef environment within the broader Georgia coastal geography.