Average sea water temperature in May:
+58.3°F
| Minimum sea water temperature in May: | 67.1°F |
| Maximum sea water temperature in May: | 51.3°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 58.8°F. The highest and lowest sea temperatures during the month were 63.7°F and 54.3°F.
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| Dewey Beach |
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| Dewey Beach |
current
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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 May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Key West | 84.3°F | 83.5°F |
| Miami | 83.3°F | 82.6°F |
| Naples | 82.9°F | 83.5°F |
| Miami Beach | 82.7°F | 82.4°F |
| Tampa | 81.9°F | 82.7°F |
| West Palm Beach | 81.7°F | 81.1°F |
| Clearwater Beach | 81.5°F | 82.6°F |
| Sarasota | 81.5°F | 82.7°F |
| Cocoa Beach | 80.4°F | 79.4°F |
| Orlando | 78.4°F | 77.2°F |
| Houston | 78.4°F | 79.5°F |
| Daytona Beach | 78.1°F | 76.0°F |
| New Orleans | 78.0°F | 79.5°F |
| Honolulu | 78.0°F | 78.1°F |
| Hawaii | 77.9°F | 78.0°F |
| St. George Island | 77.8°F | 79.2°F |
| Maui | 77.0°F | 77.5°F |
| Panama City Beach | 76.8°F | 79.0°F |
| St. Augustine | 76.7°F | 76.9°F |
| Santa Rosa Beach | 76.4°F | 78.8°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: 06:46
August 16, sunday
0900
75°F
NW
9 mph
9 mph
1200
72°F
NW
13 mph
13 mph
1500
70°F
NW
17 mph
17 mph
1800
70°F
NW
21 mph
21 mph
2100
72°F
N
22 mph
22 mph
August 17, monday
0000
73°F
N
15 mph
15 mph
0300
73°F
NE
3 mph
3 mph
0600
73°F
N
7 mph
7 mph
