Average sea water temperature in March:
+39.7°F
| Minimum sea water temperature in March: | 41.5°F |
| Maximum sea water temperature in March: | 36.7°F |
Daily sea water temperature in March, °F
Show year:
2025
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The average sea water temperature in March of 2025 was 38.3°F. The highest and lowest sea temperatures during the month were 39.9°F and 36.7°F.
sea water
temperature
temperature
| Portsmouth |
monthly
weather
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| Portsmouth |
current
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| Portsmouth |
14 days
forecast
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| Portsmouth |
Monthly sea water temperature in Portsmouth, °F
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
11
22
33
44
55
66
77
88
45.8
51.3
57.2
62.4
65.4
63.4
57.5
49.6
42.7
39.7
39.1
41.7
Which USA resorts have warmest sea in March?
| Place name | March 2025 | March 2024 |
|---|---|---|
| Kailua Kona | 77.7°F | 76.5°F |
| Honolulu | 76.8°F | 75.8°F |
| Hawaii | 76.7°F | 75.7°F |
| Maui | 76.0°F | 75.1°F |
| Fort Lauderdale | 75.8°F | 75.7°F |
| West Palm Beach | 75.8°F | 76.6°F |
| Oahu | 75.7°F | 74.5°F |
| Miami Beach | 75.3°F | 76.0°F |
| Kauai | 75.0°F | 74.5°F |
| Key West | 74.5°F | 76.5°F |
| Everglades | 74.4°F | 77.3°F |
| Miami | 74.4°F | 75.5°F |
| Marco Island | 71.8°F | 74.5°F |
| Cape Coral | 71.7°F | 74.2°F |
| Naples | 71.4°F | 73.8°F |
| Cocoa Beach | 70.0°F | 71.5°F |
| Tampa | 69.3°F | 71.7°F |
| Sarasota | 68.6°F | 71.4°F |
| Siesta Key | 68.5°F | 71.3°F |
| Clearwater Beach | 67.6°F | 70.4°F |
Best time for vacation in Portsmouth
Portsmouth on a weather map
Leaflet | Tiles © Esri
Places in USA:
Name
°F
24 Hours Forecast
Portsmouth
Local time: 17:53
April 15, tuesday
1800
55°F
SE
12 mph
12 mph
2100
52°F
NE
9 mph
9 mph
April 16, wednesday
0000
46°F
E
13 mph
13 mph
0300
39°F
E
13 mph
13 mph
0600
39°F
E
13 mph
13 mph
0900
39°F
E
14 mph
14 mph
1200
45°F
E
13 mph
13 mph
1500
45°F
E
14 mph
14 mph
