Average sea water temperature in July:
+70.1°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 69.2°F. The highest and lowest sea temperatures during the month were 71.8°F and 66.7°F.
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| Nantucket |
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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 | 89.0°F | 86.7°F |
| Clearwater Beach | 88.9°F | 87.1°F |
| St. Petersburg | 88.6°F | 87.0°F |
| Sarasota | 88.4°F | 86.9°F |
| Siesta Key | 88.3°F | 86.9°F |
| Tampa | 88.3°F | 86.8°F |
| Naples | 88.1°F | 86.6°F |
| Miami | 87.5°F | 86.3°F |
| New Orleans | 87.1°F | 87.4°F |
| Miami Beach | 87.0°F | 86.0°F |
| Pensacola | 86.9°F | 86.9°F |
| Fort Lauderdale | 86.8°F | 85.0°F |
| Destin | 86.7°F | 86.3°F |
| Houston | 86.7°F | 86.3°F |
| Panama City Beach | 86.5°F | 86.3°F |
| West Palm Beach | 86.1°F | 84.6°F |
| Corpus Christi | 85.6°F | 85.3°F |
| Charleston (SC) | 85.4°F | 84.7°F |
| Isle of Palms | 85.3°F | 84.3°F |
| Jacksonville | 85.1°F | 80.4°F |
Best time for vacation in Nantucket
Nantucket on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Nantucket
Local time: 08:50
July 16, thursday
0900
75°F
E
11 mph
11 mph
1200
82°F
NE
14 mph
14 mph
1500
81°F
NE
17 mph
17 mph
1800
79°F
NE
22 mph
22 mph
2100
75°F
E
21 mph
21 mph
July 17, friday
0000
75°F
S
20 mph
20 mph
0300
72°F
S
4 mph
4 mph
0600
73°F
SE
12 mph
12 mph
