Gray's Reef National Marine Sanctuary
- Annual mean
- 21.4 °C
- Warmest month
- August
- Wettest month
- August
A twelve-month record of climate normals based on representative coordinates in Georgia
The climate profile for Cumberland Island National Seashore provides a detailed look at monthly atmospheric conditions measured from 1991 to 2020. This dataset tracks mean, minimum, and maximum temperatures alongside daily precipitation rates and humidity percentages. Supplemental metrics include average wind speed and daylight hours to characterize the annual rhythm of this protected area. Data originates from a single representative point to offer consistent baseline patterns across the calendar year.
Long term monthly averages for temperature range and daily precipitation rates across twelve months
Track long-term monthly averages across temperature bounds, humidity, wind speed, and daylight hours from 1991 to 2020.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 13.6 °C3.2° to 20.7° | 2.9 mm/day | 79.3% | 4.8 m/s | 10.3 hours |
| February | 14.4 °C5.1° to 21.2° | 2.7 mm/day | 79.9% | 4.5 m/s | 10.9 hours |
| March | 16.6 °C7.5° to 23.5° | 2.8 mm/day | 79% | 4.5 m/s | 11.8 hours |
| April | 20 °C12.2° to 26.1° | 2.2 mm/day | 77.6% | 4.4 m/s | 12.8 hours |
| May | 23.8 °C17.6° to 29.8° | 2.5 mm/day | 76.7% | 4.4 m/s | 13.6 hours |
| June | 26.6 °C22.9° to 31.5° | 5.3 mm/day | 79.7% | 4.1 m/s | 14 hours |
| July | 27.9 °C25° to 32.3° | 4.3 mm/day | 79.9% | 3.8 m/s | 13.8 hours |
| August | 27.9 °C24.9° to 32° | 5.2 mm/day | 79.7% | 3.9 m/s | 13.1 hours |
| September | 26.7 °C21.9° to 30.7° | 4.7 mm/day | 78.1% | 4.7 m/s | 12.2 hours |
| October | 23.2 °C14.9° to 28.1° | 3.5 mm/day | 76.1% | 4.7 m/s | 11.2 hours |
| November | 18.6 °C9.6° to 24.4° | 2 mm/day | 77.7% | 4.7 m/s | 10.4 hours |
| December | 15.3 °C6.2° to 22° | 2.4 mm/day | 80.5% | 4.6 m/s | 10 hours |
Comparative analysis of long-term temperature, precipitation, wind, and daylight normals
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.
Month-by-month temperature and precipitation patterns across diverse protected landscapes





Navigate the diverse terrain and protected coastal zones of Cumberland Island National Seashore. This MoriAtlas entry provides a structured look at one of Georgia's most significant barrier island environments, covering the interplay between its salt marshes, maritime forests, and historic island infrastructure.