World Resorts USA Chicago Weather

Chicago Sea Temperature in October

Average sea water temperature in October:
+56.9°F
Minimum sea water temperature in October: 69.1°F
Maximum sea water temperature in October: 32.0°F

Daily sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 54.1°F. The highest and lowest sea temperatures during the month were 62.2°F and 35.2°F.

Monthly sea water temperature in Chicago, °F

Which USA resorts have warmest sea in October?

Place name October 2025 October 2024
South Padre Island 84.0°F 82.4°F
Key West 83.8°F 82.9°F
West Palm Beach 83.5°F 83.3°F
Fort Lauderdale 83.5°F 83.0°F
Miami Beach 83.4°F 83.4°F
Key Largo 83.0°F 83.1°F
Miami 82.7°F 82.9°F
Everglades 82.5°F 82.6°F
Corpus Christi 82.2°F 80.6°F
Naples 81.9°F 81.6°F
Sanibel Island 81.6°F 81.3°F
Kauai 81.3°F 79.2°F
Kailua Kona 80.9°F 80.6°F
Galveston 80.8°F 78.8°F
Honolulu 80.7°F 80.6°F
Hawaii 80.6°F 80.5°F
Siesta Key 80.4°F 80.7°F
Houston 80.4°F 78.8°F
Sarasota 80.2°F 80.5°F
Maui 79.8°F 79.4°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 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 16 mph
Feels like: +25°F
Precip.: 0%
Places in USA:
Name
°F
+34°F
+70°F
+70°F
+64°F
+61°F
+63°F
+63°F
+63°F
+27°F
+61°F
+55°F
+52°F
+48°F
+59°F
+32°F
24 Hours Forecast
Chicago
Local time: 22:39
February 25, wednesday
0000
32°F
E
16 mph
0300
30°F
E
16 mph
0600
27°F
SE
17 mph
0900
27°F
SE
17 mph
1200
30°F
SE
14 mph
1500
37°F
SE
11 mph
1800
36°F
SE
7 mph
2100
34°F
SE
4 mph
Units of measurement: °C / °F