World Resorts USA St. Simons Island

St. Simons Island Monthly Weather Averages

Please click on any column to get detailed information about St. Simons Island weather in that particular month. You will get daily weather information for that month for the last several years.

Day & Night air temperature, °F

The warmest month in St. Simons Island is july. The average daily temp is 88.3°F. The average nightly temp is 76.7°F.

Sea water temperature, °F

The warmest sea temperature usually observed in August. Average daily sea water temperature during this month is 85.0°F.

Precipitation total, in.

October is the month with least precipitations during the year. The average precipitation totals for this month is 0.4 in. The month with most precipitation total is August.

Number of rainy days

This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.

Wind speed, mph
Sunny, partly cloudy and cloudy days
Average sunny hours

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

* Charts above show average data for the last 3 years.

Best time for vacation in St. Simons Island

Sunniest months:
April 16 days
January 14 days
March 14 days
Warmest months:
July 88.3 °F
August 87.3 °F
June 86.0 °F
Warmest sea temp:
August 85.0 °F
July 84.6 °F
September 82.2 °F
Coldest months:
January 61.5 °F
December 63.8 °F
February 65.5 °F
Rainiest months:
August 6 days
July 6 days
September 5 days
Windiest months:
April 6.6 mph
March 6.4 mph
January 6.4 mph

St. Simons Island on a weather map

St. Simons Island
+55°F
E 4 mph
Feels like: +54°F
Precip.: 0%
Places in USA:
Name
°F
+41°F
+45°F
+73°F
+73°F
+59°F
+57°F
+66°F
+68°F
+45°F
+61°F
+54°F
+59°F
+57°F
+64°F
+39°F
24 Hours Forecast
St. Simons Island
Local time: 00:16
November 24, sunday
0300
52°F
E
6 mph
0600
50°F
E
6 mph
0900
50°F
E
5 mph
1200
61°F
E
5 mph
1500
68°F
NE
4 mph
1800
70°F
N
4 mph
2100
63°F
NE
5 mph
November 25, monday
0000
59°F
NE
6 mph
Units of measurement: °C / °F