Current sea water temperature:
+41.7°F
| Minimum sea water temperature in April: | 49.8°F |
| Maximum sea water temperature in April: | 32.0°F |
| Average sea water temperature in April: | 41.4°F |
| more information | |
14 days
forecast
forecast
| Chicago |
monthly
weather
weather
| Chicago |
Sea water temperature for the last 10 days:
| April 6 | 41.7°F | April 1 | 39.4°F |
| April 5 | 39.7°F | March 31 | 39.6°F |
| April 4 | 38.8°F | March 30 | 37.8°F |
| April 3 | 39.0°F | March 29 | 38.7°F |
| April 2 | 39.2°F | March 28 | 38.5°F |
Monthly sea water temperature, °F
When is the warmest sea in Chicago?
Based on the data about daily sea water temperature for the last three years the warmest sea in Chicago was noticed in August, July and September.
Monthly Sea Temperatures in Chicago, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.8°F. The highest and lowest sea temperatures during the month were 77.9°F and 69.1°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 73.3°F. The highest and lowest sea temperatures during the month were 76.3°F and 70.9°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 65.0°F. The highest and lowest sea temperatures during the month were 70.2°F and 59.0°F.
current
weather
weather
| Chicago |
weather in
April
April
| Chicago |
Best time for vacation in Chicago
Chicago on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Chicago
Local time: 08:24
April 06, monday
0900
43°F
SE
12 mph
12 mph
1200
48°F
SE
14 mph
14 mph
1500
46°F
SE
12 mph
12 mph
1800
45°F
SE
9 mph
9 mph
2100
41°F
SE
14 mph
14 mph
April 07, tuesday
0000
37°F
S
15 mph
15 mph
0300
32°F
SW
15 mph
15 mph
0600
30°F
SW
11 mph
11 mph
