Average sea water temperature in May:
+51.0°F
| Minimum sea water temperature in May: | 57.7°F |
| Maximum sea water temperature in May: | 45.5°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 48.2°F. The highest and lowest sea temperatures during the month were 51.8°F and 46.6°F.
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| Block Island |
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| Block Island |
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| Block Island |
Monthly sea water temperature in Block Island, °F
Which USA resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Everglades | 84.9°F | 84.5°F |
| Key West | 84.3°F | 83.5°F |
| Key Largo | 84.2°F | 83.5°F |
| Miami | 83.2°F | 82.6°F |
| Hialeah | 82.7°F | 82.3°F |
| Cape Coral | 82.6°F | 83.4°F |
| Marco Island | 82.4°F | 83.5°F |
| Miami Beach | 82.3°F | 82.4°F |
| Naples | 82.2°F | 83.5°F |
| Fort Lauderdale | 81.1°F | 81.1°F |
| West Palm Beach | 81.1°F | 81.1°F |
| Tampa | 80.6°F | 82.7°F |
| St. Petersburg | 80.5°F | 82.6°F |
| Sarasota | 80.3°F | 82.7°F |
| Siesta Key | 80.1°F | 82.5°F |
| Clearwater Beach | 80.0°F | 82.6°F |
| Cocoa Beach | 79.2°F | 79.4°F |
| Corpus Christi | 78.7°F | 80.9°F |
| Honolulu | 78.1°F | 78.1°F |
| Hilo | 78.1°F | 77.7°F |
Best time for vacation in Block Island
Block Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Block Island
Local time: 10:41
May 19, tuesday
1200
61°F
NE
16 mph
16 mph
1500
61°F
NE
17 mph
17 mph
1800
59°F
NE
22 mph
22 mph
2100
59°F
NE
19 mph
19 mph
May 20, wednesday
0000
59°F
NE
18 mph
18 mph
0300
59°F
NE
16 mph
16 mph
0600
57°F
NE
16 mph
16 mph
0900
59°F
NE
15 mph
15 mph
