Average sea water temperature in July:
+70.0°F
| Minimum sea water temperature in July: | 75.6°F |
| Maximum sea water temperature in July: | 63.9°F |
Daily sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 69.5°F. The highest and lowest sea temperatures during the month were 71.8°F and 66.7°F.
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Monthly sea water temperature in Nantucket, °F
Which USA resorts have warmest sea in July?
| Place name | July 2026 | July 2025 |
|---|---|---|
| Key West | 88.5°F | 86.7°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 |
| 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 |
| Bay Saint Louis | 86.8°F | 87.2°F |
| Houston | 86.7°F | 86.3°F |
| Fort Lauderdale | 86.6°F | 85.0°F |
| Hilton Head Island | 86.3°F | 85.7°F |
| St. George Island | 86.3°F | 86.4°F |
| Pensacola | 86.1°F | 86.9°F |
| Orange Beach | 86.1°F | 86.7°F |
| West Palm Beach | 86.1°F | 84.6°F |
| St. Simons Island | 86.0°F | 84.5°F |
| Panama City Beach | 86.0°F | 86.3°F |
| Santa Rosa Beach | 85.9°F | 86.2°F |
Best time for vacation in Nantucket
Nantucket on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Nantucket
Local time: 16:56
September 14, monday
1800
68°F
S
21 mph
21 mph
2100
66°F
S
16 mph
16 mph
September 15, tuesday
0000
64°F
S
22 mph
22 mph
0300
64°F
SW
19 mph
19 mph
0600
63°F
SW
19 mph
19 mph
0900
63°F
SW
16 mph
16 mph
1200
63°F
SW
13 mph
13 mph
1500
63°F
SW
14 mph
14 mph
