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
Islamorada 76.4°F 73.4°F
Key Largo 76.3°F 73.1°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
Sanibel Island 70.9°F 67.1°F
Cocoa Beach 69.7°F 66.6°F
Siesta Key 69.3°F 65.6°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 28.2 °F
February 30.9 °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 11.7 mph

Chicago on a weather map

Chicago
+36°F
E 14 mph
Feels like: +25°F
Precip.: 0%
Places in USA:
Name
°F
+46°F
+75°F
+75°F
+59°F
+70°F
+77°F
+77°F
+70°F
+41°F
+70°F
+55°F
+75°F
+77°F
+55°F
+36°F
24 Hours Forecast
Chicago
Local time: 17:57
January 10, saturday
1800
36°F
E
14 mph
2100
30°F
E
17 mph
January 11, sunday
0000
27°F
E
16 mph
0300
25°F
SE
16 mph
0600
23°F
SE
16 mph
0900
23°F
SE
16 mph
1200
30°F
SE
14 mph
1500
32°F
SE
11 mph
Units of measurement: °C / °F