Average sea water temperature in May:
+82.5°F
| Minimum sea water temperature in May: | 88.0°F |
| Maximum sea water temperature in May: | 77.4°F |
Daily sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 83.2°F. The highest and lowest sea temperatures during the month were 85.3°F and 79.3°F.
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| Marco Island |
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| Marco Island |
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| Marco Island |
14 days
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| Marco Island |
Monthly sea water temperature in Marco Island, °F
Which USA resorts have warmest sea in May?
| Place name | May 2026 | May 2025 |
|---|---|---|
| Key West | 84.3°F | 83.5°F |
| Miami | 83.3°F | 82.6°F |
| Cape Coral | 83.3°F | 83.4°F |
| Naples | 82.9°F | 83.5°F |
| Miami Beach | 82.7°F | 82.4°F |
| Tampa | 81.9°F | 82.7°F |
| West Palm Beach | 81.7°F | 81.1°F |
| Fort Lauderdale | 81.7°F | 81.1°F |
| Clearwater Beach | 81.5°F | 82.6°F |
| Sarasota | 81.5°F | 82.7°F |
| Siesta Key | 81.3°F | 82.5°F |
| Port St. Lucie | 80.8°F | 78.9°F |
| Cocoa Beach | 80.4°F | 79.4°F |
| Corpus Christi | 79.5°F | 80.9°F |
| Orlando | 78.4°F | 77.2°F |
| Houston | 78.4°F | 79.5°F |
| Daytona Beach | 78.1°F | 76.0°F |
| New Orleans | 78.0°F | 79.5°F |
| Honolulu | 78.0°F | 78.1°F |
| Hawaii | 77.9°F | 78.0°F |
Best time for vacation in Marco Island
Marco Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Marco Island
Local time: 02:01
September 23, wednesday
0300
81°F
NW
10 mph
10 mph
0600
81°F
W
7 mph
7 mph
0900
81°F
W
6 mph
6 mph
1200
82°F
E
3 mph
3 mph
1500
84°F
E
9 mph
9 mph
1800
84°F
SE
7 mph
7 mph
2100
82°F
S
5 mph
5 mph
September 24, thursday
0000
82°F
W
6 mph
6 mph
