World Resorts USA Marco Island Weather

Marco Island Sea Temperature in December

Average sea water temperature in December:
+70.8°F
Minimum sea water temperature in December: 77.4°F
Maximum sea water temperature in December: 64.9°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 71.8°F. The highest and lowest sea temperatures during the month were 74.7°F and 69.4°F.

Monthly sea water temperature in Marco Island, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
West Palm Beach 79.0°F 78.4°F
Fort Lauderdale 78.7°F 77.6°F
Honolulu 78.6°F 78.3°F
Hawaii 78.5°F 78.3°F
Kauai 78.2°F 76.0°F
Maui 78.0°F 77.8°F
Miami Beach 77.4°F 75.9°F
Oahu 77.1°F 77.2°F
Key West 75.9°F 72.6°F
Miami 75.5°F 73.0°F
Naples 71.5°F 67.7°F
Cocoa Beach 69.7°F 66.6°F
Sarasota 69.2°F 65.6°F
Tampa 68.3°F 65.5°F
Orlando 67.6°F 66.0°F
Daytona Beach 67.1°F 65.8°F
Clearwater Beach 66.8°F 62.9°F
Fort Walton Beach 66.0°F 67.1°F
Destin 65.7°F 66.5°F
Pensacola Beach 65.2°F 66.7°F

Best time for vacation in Marco Island

Sunniest months:
March 19 days
April 18 days
May 16 days
Warmest months:
August 88.4 °F
July 88.1 °F
June 86.6 °F
Warmest sea temp:
August 87.7 °F
July 87.2 °F
September 86.5 °F
Coldest months:
January 70.0 °F
December 72.8 °F
February 73.7 °F
Rainiest months:
June 6 days
July 4 days
September 4 days
Windiest months:
April 10.1 mph
November 10.0 mph
January 9.9 mph

Marco Island on a weather map

Marco Island
+93°F
N 7 mph
Feels like: +109°F
Precip.: 11%
Places in USA:
Name
°F
+70°F
+91°F
+77°F
+82°F
+70°F
+88°F
+63°F
+91°F
+73°F
+73°F
+63°F
+70°F
+86°F
+81°F
+75°F
24 Hours Forecast
Marco Island
Local time: 10:46
September 02, wednesday
1200
93°F
N
7 mph
1500
86°F
NE
8 mph
1800
86°F
E
8 mph
2100
82°F
S
4 mph
September 03, thursday
0000
84°F
SW
6 mph
0300
82°F
W
6 mph
0600
84°F
NW
8 mph
0900
84°F
NW
6 mph
Units of measurement: °C / °F