World Resorts USA St. Simons Island Weather

St. Simons Island 14 Days Forecast

13.08
thu
Day
91°F
E 1 mph
Precip.
7%
Night
81°F
NE 10 mph
Precip.
12%
14.08
fri
Day
93°F
NE 3 mph
Precip.
3%
Night
77°F
NE 6 mph
Precip.
12%
15.08
sat
Day
91°F
NE 4 mph
Precip.
3%
Night
82°F
NE 9 mph
Precip.
9%
16.08
sun
Day
91°F
NE 6 mph
Precip.
3%
Night
82°F
NE 8 mph
Precip.
7%
17.08
mon
Day
95°F
E 6 mph
Precip.
2%
Night
82°F
NE 7 mph
Precip.
43%
18.08
tue
Day
93°F
NE 6 mph
Precip.
4%
Night
79°F
E 9 mph
Precip.
37%
19.08
wed
Day
90°F
NE 5 mph
Precip.
36%
Night
79°F
NE 11 mph
Precip.
11%
20.08
thu
Day
91°F
NE 6 mph
Precip.
2%
Night
82°F
NE 8 mph
Precip.
10%
21.08
fri
Day
91°F
NE 4 mph
Precip.
4%
Night
82°F
NE 7 mph
Precip.
14%
22.08
sat
Day
91°F
NE 5 mph
Precip.
7%
Night
73°F
E 8 mph
Precip.
32%
23.08
sun
Day
88°F
NE 4 mph
Precip.
17%
Night
75°F
E 3 mph
Precip.
70%
24.08
mon
Day
86°F
N 7 mph
Precip.
5%
Night
81°F
N 11 mph
Precip.
23%
25.08
tue
Day
86°F
N 5 mph
Precip.
8%
Night
81°F
N 9 mph
Precip.
55%
26.08
wed
Day
88°F
N 6 mph
Precip.
6%
Night
81°F
N 8 mph
Precip.
16%

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 85.7°F. The highest and lowest sea temperatures during the month were 87.6°F and 83.5°F.

Air temperature in St. Simons Island, °F

Precipitation total in St. Simons Island, in.

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

Best time for vacation in St. Simons Island

Sunniest months:
January 15 days
October 15 days
April 15 days
Warmest months:
July 89.1 °F
August 86.9 °F
June 86.3 °F
Warmest sea temp:
August 85.1 °F
July 84.8 °F
September 82.0 °F
Coldest months:
January 59.4 °F
December 62.5 °F
February 64.1 °F
Rainiest months:
August 5 days
July 4 days
September 4 days
Windiest months:
February 6.9 mph
January 6.9 mph
April 6.9 mph

St. Simons Island on a weather map

Current weather
22:14
St. Simons Island
+82°F
N 11 mph
Feels like: +90°F
Precip.: 11%
Places in USA:
Name
°F
Boston
+77°F
Washington
+84°F
Hawaii
+81°F
Las Vegas
+93°F
Los Angeles
+77°F
Miami
+82°F
Maui
+79°F
Myrtle Beach
+82°F
New York
+79°F
San Diego
+73°F
San Francisco
+64°F
Santa Monica
+72°F
Sarasota
+82°F
Houston
+82°F
Chicago
+72°F
all places
24 Hours Forecast
St. Simons Island
Local time: 22:14
August 14, friday
0000
81°F
NE
10 mph
0300
81°F
E
6 mph
0600
79°F
E
6 mph
0900
82°F
E
5 mph
1200
93°F
NE
3 mph
1500
91°F
NW
10 mph
1800
88°F
N
12 mph
2100
82°F
NE
11 mph
Units of measurement: °C / °F