Saint Simons Island (GA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Saint Simons Island.
Climate overview of Saint Simons Island
Saint Simons Island, in Georgia, United States, has a climate with noticeable seasonal changes. Summers are very warm and humid, while winters stay mild. Rainfall is fairly consistent throughout the year, with no extreme dry or wet periods. The island is known for its beaches, historic sites, and relaxed coastal atmosphere, making it a popular destination year-round. Now, let’s explore all the climate details to give you a complete picture.
Saint Simons Island Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint Simons Island - and find the best time to visit.
Monthly Temperature in Saint Simons Island
In Saint Simons Island, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in July to a moderate 16°C (61°F) in the coolest month, January.
Nights vary from 25°C (77°F) in July to around 6°C (43°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Saint Simons Island
On average, Saint Simons Island receives a reasonable amount of rainfall, with an annual precipitation of 999 mm (39 in). The climate in Saint Simons Island shows significant variation throughout the year. Expect high rainfall in August, the wettest month, with an average of 159 mm (6.3 in) of precipitation over 15 rainy days.
In contrast, the driest month November offers drier and sunnier days, with around 38 mm (1.5 in) of rainfall over 5 rainy days. For more details, please visit our Saint Simons Island Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Saint Simons Island
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, April, May, October and November
- Warmest weather: June, July and August
- Fewest rainy days: April, October, November and December
- Wettest months: June, July, August and September, when rainfall is highest.
- Seasonal pattern: Very warm summers and mild winters
Frequently asked questions about the climate in Saint Simons Island
What is the best time to visit Saint Simons Island?
March, April, May, October and November typically offer the most optimal weather in Saint Simons Island. In contrast, June and August tend to have less optimal conditions. Saint Simons Island has very warm summers and mild winters.
What temperatures can I expect in Saint Simons Island?
Daytime highs range from 16°C (61°F) in January to 32°C (90°F) in July. Nighttime lows range from 6°C (43°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Saint Simons Island get?
Annual rainfall is around 999 mm (39 in). August is the wettest month with 159 mm (6.3 in), while November is the driest with 38 mm (1.5 in).
Saint Simons Island 3-Day Forecast
Saint Simons Island on the map
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