World Resorts USA Seaside Weather

Seaside Sea Temperature in December

Average sea water temperature in December:
+50.7°F
Minimum sea water temperature in December: 53.4°F
Maximum sea water temperature in December: 47.7°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 52.2°F. The highest and lowest sea temperatures during the month were 53.4°F and 50.9°F.

Monthly sea water temperature in Seaside, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
West Palm Beach 79.0°F 78.4°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
Maui 78.0°F 77.8°F
Miami Beach 77.4°F 75.9°F
Oahu 77.1°F 77.2°F
Key Largo 76.3°F 73.1°F
Hialeah 76.2°F 74.3°F
Key West 75.9°F 72.6°F
Miami 75.5°F 73.0°F
Everglades 73.7°F 69.7°F
Marco Island 71.8°F 68.0°F
Naples 71.5°F 67.7°F
Cape Coral 71.2°F 67.8°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

Best time for vacation in Seaside

Sunniest months:
August 13 days
September 12 days
July 11 days
Warmest months:
August 64.9 °F
July 63.1 °F
September 62.8 °F
Warmest sea temp:
August 57.4 °F
July 55.9 °F
September 55.7 °F
Coldest months:
February 46.2 °F
January 47.3 °F
December 47.4 °F
Rainiest months:
January 8 days
November 6 days
December 5 days
Windiest months:
December 10.1 mph
January 9.5 mph
November 9.2 mph

Seaside on a weather map

Seaside
+55°F
NW 10 mph
Feels like: +52°F
Precip.: 94%
Places in USA:
Name
°F
+79°F
+79°F
+104°F
+77°F
+86°F
+84°F
+75°F
+75°F
+70°F
+63°F
+70°F
+91°F
+97°F
+88°F
+77°F
24 Hours Forecast
Seaside
Local time: 13:58
June 08, monday
1500
55°F
NW
10 mph
1800
57°F
N
15 mph
2100
55°F
NE
20 mph
June 09, tuesday
0000
55°F
E
17 mph
0300
54°F
E
17 mph
0600
54°F
E
18 mph
0900
54°F
E
15 mph
1200
55°F
E
14 mph
Units of measurement: °C / °F