Average sea water temperature in March:
+44.8°F
| Minimum sea water temperature in March: | 50.5°F |
| Maximum sea water temperature in March: | 36.1°F |
Daily sea water temperature in March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 39.1°F. The highest and lowest sea temperatures during the month were 42.1°F and 36.1°F.
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| Bethany Beach |
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Monthly sea water temperature in Bethany Beach, °F
Which USA resorts have warmest sea in March?
| Place name | March 2026 | March 2025 |
|---|---|---|
| Everglades | 78.2°F | 74.4°F |
| Key West | 77.1°F | 74.5°F |
| Kailua Kona | 77.1°F | 77.7°F |
| West Palm Beach | 76.9°F | 75.8°F |
| Miami Beach | 76.8°F | 75.3°F |
| Honolulu | 76.8°F | 76.8°F |
| Kauai | 76.7°F | 75.0°F |
| Hawaii | 76.6°F | 76.7°F |
| Fort Lauderdale | 76.4°F | 75.8°F |
| Miami | 76.4°F | 74.4°F |
| Maui | 75.4°F | 76.0°F |
| Cape Coral | 74.8°F | 71.7°F |
| Oahu | 74.8°F | 75.7°F |
| Naples | 72.8°F | 71.4°F |
| South Padre Island | 72.6°F | 66.8°F |
| Tampa | 72.2°F | 69.3°F |
| Cocoa Beach | 72.1°F | 70.0°F |
| Corpus Christi | 72.1°F | 67.0°F |
| St. Petersburg | 71.7°F | 68.8°F |
| Sarasota | 70.9°F | 68.6°F |
Best time for vacation in Bethany Beach
Bethany Beach on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Bethany Beach
Local time: 20:13
March 18, wednesday
2100
34°F
NW
9 mph
9 mph
March 19, thursday
0000
34°F
NW
9 mph
9 mph
0300
36°F
NW
7 mph
7 mph
0600
36°F
NW
5 mph
5 mph
0900
39°F
NW
6 mph
6 mph
1200
41°F
NW
6 mph
6 mph
1500
43°F
NW
11 mph
11 mph
1800
43°F
N
11 mph
11 mph
