Average sea water temperature in December:
+47.6°F
| Minimum sea water temperature in December: | 56.7°F |
| Maximum sea water temperature in December: | 41.0°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 44.1°F. The highest and lowest sea temperatures during the month were 50.5°F and 41.0°F.
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| Dewey Beach |
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| Dewey Beach |
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| Dewey Beach |
14 days
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| Dewey Beach |
Monthly sea water temperature in Dewey Beach, °F
Which USA resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| 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 |
| Sarasota | 69.2°F | 65.6°F |
| Tampa | 68.3°F | 65.5°F |
| Orlando | 67.6°F | 66.0°F |
| Corpus Christi | 67.5°F | 66.5°F |
| Daytona Beach | 67.1°F | 65.8°F |
| Clearwater Beach | 66.8°F | 62.9°F |
| Destin | 65.7°F | 66.5°F |
Best time for vacation in Dewey Beach
Dewey Beach on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Dewey Beach
Local time: 06:29
July 02, thursday
0900
79°F
NE
9 mph
9 mph
1200
84°F
N
5 mph
5 mph
1500
84°F
N
12 mph
12 mph
1800
82°F
N
16 mph
16 mph
2100
79°F
N
14 mph
14 mph
July 03, friday
0000
77°F
NE
11 mph
11 mph
0300
77°F
NE
9 mph
9 mph
0600
75°F
NE
8 mph
8 mph
