Average sea water temperature in May:
+52.0°F
| Minimum sea water temperature in May: | 63.1°F |
| Maximum sea water temperature in May: | 43.7°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 50.9°F. The highest and lowest sea temperatures during the month were 53.2°F and 48.2°F.
Monthly sea water temperature in Boston, °F
Which USA resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Everglades | 84.8°F | 84.5°F |
| Key Largo | 84.1°F | 83.5°F |
| Key West | 84.0°F | 83.5°F |
| Miami | 82.9°F | 82.6°F |
| Cape Coral | 82.6°F | 83.4°F |
| Hialeah | 82.4°F | 82.3°F |
| Marco Island | 82.1°F | 83.5°F |
| Miami Beach | 82.1°F | 82.4°F |
| Naples | 81.9°F | 83.5°F |
| Fort Lauderdale | 80.9°F | 81.1°F |
| West Palm Beach | 80.9°F | 81.1°F |
| Tampa | 80.4°F | 82.7°F |
| St. Petersburg | 80.3°F | 82.6°F |
| Sarasota | 80.0°F | 82.7°F |
| Siesta Key | 79.8°F | 82.5°F |
| Clearwater Beach | 79.8°F | 82.6°F |
| Cocoa Beach | 78.7°F | 79.4°F |
| Corpus Christi | 78.4°F | 80.9°F |
| Hilo | 78.1°F | 77.7°F |
| Honolulu | 78.0°F | 78.1°F |
Best time for vacation in Boston
Boston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boston
Local time: 20:10
May 16, saturday
2100
66°F
NE
12 mph
12 mph
May 17, sunday
0000
63°F
NE
12 mph
12 mph
0300
63°F
NE
11 mph
11 mph
0600
61°F
NE
7 mph
7 mph
0900
70°F
E
8 mph
8 mph
1200
79°F
E
11 mph
11 mph
1500
82°F
SE
15 mph
15 mph
1800
79°F
E
11 mph
11 mph
