World Resorts USA Marco Island Weather

Marco Island Sea Temperature in May

Average sea water temperature in May:
+82.4°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:
2025
2024
2023

The average sea water temperature in May of 2025 was 83.5°F. The highest and lowest sea temperatures during the month were 88.0°F and 79.3°F.

Monthly sea water temperature in Marco Island, °F

Which USA resorts have warmest sea in May?

Place name May 2025 May 2024
Everglades 84.5°F 84.6°F
Islamorada 83.6°F 84.4°F
Key West 83.5°F 84.6°F
Naples 83.5°F 83.8°F
Marco Island 83.5°F 84.0°F
Key Largo 83.5°F 84.1°F
Sanibel Island 83.1°F 83.2°F
Tampa 82.7°F 82.5°F
Sarasota 82.7°F 82.9°F
St. Petersburg 82.6°F 82.4°F
Clearwater Beach 82.6°F 82.5°F
Miami 82.6°F 83.3°F
Siesta Key 82.5°F 82.6°F
Miami Beach 82.4°F 83.0°F
Fort Lauderdale 81.1°F 81.7°F
West Palm Beach 81.1°F 81.5°F
Corpus Christi 80.9°F 81.0°F
Pensacola 80.1°F 79.4°F
South Padre Island 80.0°F 81.1°F
Pass Christian 79.8°F 79.8°F

Best time for vacation in Marco Island

Sunniest months:
March 19 days
April 17 days
December 16 days
Warmest months:
August 88.0 °F
July 87.8 °F
September 86.6 °F
Warmest sea temp:
August 87.5 °F
July 87.1 °F
September 86.5 °F
Coldest months:
January 69.8 °F
December 72.8 °F
February 74.1 °F
Rainiest months:
June 6 days
July 5 days
September 4 days
Windiest months:
April 10.0 mph
November 10.0 mph
October 9.9 mph

Marco Island on a weather map

Marco Island
+48°F
SW 6 mph
Feels like: +45°F
Precip.: 0%
Places in USA:
Name
°F
+28°F
+72°F
+72°F
+48°F
+55°F
+46°F
+59°F
+66°F
+19°F
+61°F
+54°F
+46°F
+48°F
+66°F
+14°F
24 Hours Forecast
Marco Island
Local time: 07:16
January 02, friday
0900
54°F
W
6 mph
1200
68°F
N
2 mph
1500
72°F
NE
6 mph
1800
70°F
NE
7 mph
2100
64°F
NE
5 mph
January 03, saturday
0000
64°F
NE
4 mph
0300
64°F
NE
2 mph
0600
63°F
N
3 mph
Units of measurement: °C / °F