World Resorts USA St. Simons Island Weather

St. Simons Island Sea Temperature in May

Average sea water temperature in May:
+75.9°F
Minimum sea water temperature in May: 82.4°F
Maximum sea water temperature in May: 70.7°F

Daily sea water temperature in May, °F

Show year:
2025
2024
2023

The average sea water temperature in May of 2025 was 77.9°F. The highest and lowest sea temperatures during the month were 82.4°F and 73.8°F.

Monthly sea water temperature in St. Simons Island, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Islamorada 83.6°F 84.4°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°F
Marco Island 83.5°F 84.0°F
Key Largo 83.5°F 84.1°F
Cape Coral 83.4°F 83.6°F
Sarasota 82.7°F 82.9°F
Tampa 82.7°F 82.5°F
Clearwater Beach 82.6°F 82.5°F
Miami 82.6°F 83.3°F
Siesta Key 82.5°F 82.6°F
Miami Beach 82.4°F 83.0°F
Fort Lauderdale 81.1°F 81.7°F
Corpus Christi 80.9°F 81.0°F
Pensacola 80.1°F 79.4°F
South Padre Island 80.0°F 81.1°F
Houston 79.5°F 78.9°F
New Orleans 79.5°F 79.9°F
Cocoa Beach 79.4°F 80.0°F

Best time for vacation in St. Simons Island

Sunniest months:
October 15 days
January 14 days
March 14 days
Warmest months:
July 88.3 °F
August 86.9 °F
June 86.1 °F
Warmest sea temp:
August 85.1 °F
July 84.6 °F
September 82.0 °F
Coldest months:
January 59.8 °F
December 62.7 °F
February 64.8 °F
Rainiest months:
August 5 days
July 5 days
September 4 days
Windiest months:
December 6.7 mph
October 6.7 mph
January 6.7 mph

St. Simons Island on a weather map

St. Simons Island
+57°F
NW 6 mph
Feels like: +57°F
Precip.: 100%
Places in USA:
Name
°F
+30°F
+75°F
+75°F
+41°F
+52°F
+70°F
+77°F
+70°F
+21°F
+54°F
+46°F
+61°F
+61°F
+46°F
+5°F
24 Hours Forecast
St. Simons Island
Local time: 01:47
December 05, friday
0300
57°F
NW
6 mph
0600
59°F
N
6 mph
0900
61°F
NE
4 mph
1200
64°F
NE
5 mph
1500
63°F
NE
4 mph
1800
57°F
S
11 mph
2100
55°F
S
7 mph
December 06, saturday
0000
55°F
SE
4 mph
Units of measurement: °C / °F