World Resorts USA Charleston Weather

Charleston Sea Temperature in December

Average sea water temperature in December:
+60.1°F
Minimum sea water temperature in December: 68.4°F
Maximum sea water temperature in December: 47.3°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 55.8°F. The highest and lowest sea temperatures during the month were 61.2°F and 50.7°F.

Monthly sea water temperature in Charleston, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
West Palm Beach 79.0°F 78.4°F
Molokai 78.7°F 78.2°F
Fort Lauderdale 78.7°F 77.6°F
Honolulu 78.6°F 78.3°F
Hawaii 78.5°F 78.3°F
Kauai 78.2°F 76.0°F
Hilo 78.0°F 78.0°F
Maui 78.0°F 77.8°F
Miami Beach 77.4°F 75.9°F
Oahu 77.1°F 77.2°F
Key West 75.9°F 72.6°F
Miami 75.5°F 73.0°F
Naples 71.5°F 67.7°F
Cocoa Beach 69.7°F 66.6°F
Siesta Key 69.3°F 65.6°F
Sarasota 69.2°F 65.6°F
Tampa 68.3°F 65.5°F
Orlando 67.6°F 66.0°F
St. Petersburg 67.5°F 64.3°F
Corpus Christi 67.5°F 66.5°F

Best time for vacation in Charleston

Sunniest months:
April 16 days
May 16 days
October 15 days
Warmest months:
July 89.5 °F
August 87.7 °F
June 86.2 °F
Warmest sea temp:
August 83.7 °F
July 83.7 °F
September 81.0 °F
Coldest months:
January 55.7 °F
February 59.9 °F
December 60.5 °F
Rainiest months:
August 9 days
July 8 days
June 7 days
Windiest months:
March 9.5 mph
April 9.4 mph
February 9.0 mph

Charleston on a weather map

Charleston
+79°F
N 4 mph
Feels like: +86°F
Precip.: 13%
Places in USA:
Name
°F
+66°F
+77°F
+86°F
+61°F
+79°F
+84°F
+72°F
+73°F
+70°F
+63°F
+54°F
+77°F
+77°F
+79°F
+66°F
24 Hours Forecast
Charleston
Local time: 04:19
June 26, friday
0600
77°F
N
3 mph
0900
81°F
N
6 mph
1200
88°F
N
11 mph
1500
88°F
N
14 mph
1800
84°F
N
14 mph
2100
82°F
N
12 mph
June 27, saturday
0000
81°F
NE
12 mph
0300
81°F
NE
9 mph
Units of measurement: °C / °F