Average sea water temperature in July:
+75.5°F
| Minimum sea water temperature in July: | 80.8°F |
| Maximum sea water temperature in July: | 68.9°F |
Daily sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 76.1°F. The highest and lowest sea temperatures during the month were 80.6°F and 72.7°F.
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| Dewey Beach |
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| Dewey Beach |
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| Dewey Beach |
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| Dewey Beach |
Monthly sea water temperature in Dewey Beach, °F
Which USA resorts have warmest sea in July?
| Place name | July 2026 | July 2025 |
|---|---|---|
| Key West | 88.5°F | 86.7°F |
| Key Largo | 88.2°F | 86.2°F |
| Clearwater Beach | 87.9°F | 87.1°F |
| Naples | 87.7°F | 86.6°F |
| Tampa | 87.6°F | 86.8°F |
| Sarasota | 87.6°F | 86.9°F |
| Cape Coral | 87.6°F | 86.4°F |
| Siesta Key | 87.6°F | 86.9°F |
| New Orleans | 87.5°F | 87.4°F |
| Miami | 87.4°F | 86.3°F |
| Miami Beach | 87.0°F | 86.0°F |
| Houston | 86.7°F | 86.3°F |
| Fort Lauderdale | 86.6°F | 85.0°F |
| Galveston | 86.4°F | 86.4°F |
| Hilton Head Island | 86.3°F | 85.7°F |
| St. George Island | 86.3°F | 86.4°F |
| Tybee Island | 86.3°F | 85.4°F |
| Pensacola | 86.1°F | 86.9°F |
| Jekyll Island | 86.1°F | 84.6°F |
| Orange Beach | 86.1°F | 86.7°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: 00:51
October 25, sunday
0300
57°F
SW
5 mph
5 mph
0600
57°F
SW
6 mph
6 mph
0900
55°F
S
7 mph
7 mph
1200
55°F
S
6 mph
6 mph
1500
57°F
S
2 mph
2 mph
1800
57°F
NW
3 mph
3 mph
2100
59°F
NW
4 mph
4 mph
October 26, monday
0000
57°F
NE
5 mph
5 mph
