Average sea water temperature in July:
+63.7°F
| Minimum sea water temperature in July: | 70.3°F |
| Maximum sea water temperature in July: | 57.0°F |
Daily sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 65.7°F. The highest and lowest sea temperatures during the month were 70.2°F and 63.0°F.
sea water
temperature
temperature
| Portsmouth |
monthly
weather
weather
| Portsmouth |
current
weather
weather
| Portsmouth |
14 days
forecast
forecast
| Portsmouth |
Monthly sea water temperature in Portsmouth, °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 |
| 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 |
| Orange Beach | 86.1°F | 86.7°F |
| West Palm Beach | 86.1°F | 84.6°F |
| Kiawah Island | 86.0°F | 84.8°F |
Best time for vacation in Portsmouth
Portsmouth on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Portsmouth
Local time: 21:54
September 27, sunday
0000
55°F
SW
30 mph
30 mph
0300
57°F
SW
32 mph
32 mph
0600
57°F
SW
32 mph
32 mph
0900
57°F
SW
34 mph
34 mph
1200
57°F
SW
32 mph
32 mph
1500
57°F
SW
29 mph
29 mph
1800
57°F
SW
27 mph
27 mph
2100
57°F
SW
24 mph
24 mph
