World Resorts USA St. Simons Island Weather

St. Simons Island 7 Days Forecast

04.10
sun
Day
82°F
SE 2 mph
Precip.
74%
Night
73°F
S 2 mph
Precip.
43%
05.10
mon
Day
73°F
S 3 mph
Precip.
36%
Night
72°F
S 3 mph
Precip.
54%
06.10
tue
Day
72°F
SW 5 mph
Precip.
79%
Night
72°F
SW 7 mph
Precip.
42%
07.10
wed
Day
79°F
SW 12 mph
Precip.
18%
Night
70°F
S 6 mph
Precip.
28%
08.10
thu
Day
79°F
SW 8 mph
Precip.
17%
Night
68°F
S 4 mph
Precip.
25%
09.10
fri
Day
75°F
SW 7 mph
Precip.
16%
Night
73°F
W 9 mph
Precip.
67%
10.10
sat
Day
75°F
W 6 mph
Precip.
84%
Night
75°F
NW 6 mph
Precip.
65%

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 74.5°F. The highest and lowest sea temperatures during the month were 80.8°F and 68.2°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 87.4 °F
June 86.3 °F
Warmest sea temp:
August 85.1 °F
July 84.8 °F
September 82.2 °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
23:05
St. Simons Island
+73°F
S 2 mph
Feels like: +77°F
Precip.: 43%
Places in USA:
Name
°F
Boston
+55°F
Washington
+61°F
Hawaii
+77°F
Las Vegas
+82°F
Los Angeles
+90°F
Miami
+84°F
Maui
+70°F
Myrtle Beach
+70°F
New York
+59°F
Panama City Beach
+73°F
San Diego
+82°F
San Francisco
+66°F
Santa Monica
+82°F
Sarasota
+79°F
Chicago
+64°F
all places
24 Hours Forecast
St. Simons Island
Local time: 23:05
October 05, monday
0000
73°F
S
2 mph
0300
72°F
SW
2 mph
0600
72°F
S
2 mph
0900
72°F
S
2 mph
1200
73°F
S
3 mph
1500
73°F
S
6 mph
1800
72°F
S
6 mph
2100
72°F
SW
6 mph
Units of measurement: °C / °F