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 62.7 °F
February 65.5 °F
Rainiest months:
August 6 days
July 6 days
September 5 days
Windiest months:
December 6.7 mph
April 6.6 mph
November 6.5 mph

St. Simons Island on a weather map

St. Simons Island
+50°F
SE 6 mph
Feels like: +46°F
Precip.: 0%
Places in USA:
Name
°F
+32°F
+32°F
+73°F
+73°F
+55°F
+59°F
+70°F
+28°F
+54°F
+55°F
+55°F
+59°F
+57°F
+54°F
+28°F
24 Hours Forecast
St. Simons Island
Local time: 23:33
January 03, friday
0000
50°F
SE
6 mph
0300
46°F
SE
4 mph
0600
45°F
SE
6 mph
0900
43°F
E
7 mph
1200
52°F
E
9 mph
1500
61°F
E
12 mph
1800
61°F
E
12 mph
2100
54°F
E
9 mph
Units of measurement: °C / °F