World Resorts USA Chicago Weather

Chicago Sea Temperature in December

Average sea water temperature in December:
+40.5°F
Minimum sea water temperature in December: 47.7°F
Maximum sea water temperature in December: 32.2°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 38.5°F. The highest and lowest sea temperatures during the month were 44.8°F and 34.5°F.

Monthly sea water temperature in Chicago, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
Kailua Kona 79.2°F 78.3°F
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
Everglades 73.7°F 69.7°F
Marco Island 71.8°F 68.0°F
South Padre Island 71.8°F 71.9°F
Naples 71.5°F 67.7°F
Cape Coral 71.2°F 67.8°F
Cocoa Beach 69.7°F 66.6°F
Siesta Key 69.3°F 65.6°F
Sarasota 69.2°F 65.6°F
Tampa 68.3°F 65.5°F

Best time for vacation in Chicago

Sunniest months:
September 17 days
August 16 days
July 15 days
Warmest months:
July 80.4 °F
August 79.9 °F
June 74.3 °F
Warmest sea temp:
August 70.3 °F
July 68.2 °F
September 66.1 °F
Coldest months:
January 28.1 °F
February 31.1 °F
December 35.7 °F
Rainiest months:
June 7 days
May 6 days
July 5 days
Windiest months:
November 12.2 mph
January 12.0 mph
February 11.6 mph

Chicago on a weather map

Chicago
+41°F
NE 12 mph
Feels like: +32°F
Precip.: 0%
Places in USA:
Name
°F
+36°F
+70°F
+70°F
+70°F
+57°F
+72°F
+77°F
+64°F
+32°F
+61°F
+55°F
+70°F
+68°F
+61°F
+41°F
24 Hours Forecast
Chicago
Local time: 01:31
March 29, sunday
0300
41°F
NE
12 mph
0600
41°F
N
12 mph
0900
43°F
N
12 mph
1200
50°F
NE
13 mph
1500
55°F
N
13 mph
1800
54°F
N
13 mph
2100
52°F
NE
12 mph
March 30, monday
0000
50°F
N
12 mph
Units of measurement: °C / °F