Current sea water temperature:
+40.6°F
| Minimum sea water temperature in December: | 46.9°F |
| Maximum sea water temperature in December: | 37.2°F |
| Average sea water temperature in December: | 41.5°F |
| more information | |
14 days
forecast
forecast
| Milwaukee |
monthly
weather
weather
| Milwaukee |
Sea water temperature for the last 10 days:
| December 20 | 40.6°F | December 15 | 40.6°F |
| December 19 | 39.2°F | December 14 | 40.3°F |
| December 18 | 40.3°F | December 13 | 40.6°F |
| December 17 | 39.9°F | December 12 | 41.0°F |
| December 16 | 41.2°F | December 11 | 39.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Milwaukee?
Based on the data about daily sea water temperature for the last three years the warmest sea in Milwaukee was noticed in August, July and September.
Monthly Sea Temperatures in Milwaukee, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 71.2°F. The highest and lowest sea temperatures during the month were 73.2°F and 68.4°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 68.7°F. The highest and lowest sea temperatures during the month were 75.4°F and 64.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 66.9°F. The highest and lowest sea temperatures during the month were 70.0°F and 63.5°F.
current
weather
weather
| Milwaukee |
weather in
December
December
| Milwaukee |
Best time for vacation in Milwaukee
Milwaukee on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Milwaukee
Local time: 22:13
December 21, sunday
0000
19°F
SE
21 mph
21 mph
0300
14°F
SE
17 mph
17 mph
0600
12°F
SE
14 mph
14 mph
0900
12°F
SE
11 mph
11 mph
1200
19°F
E
6 mph
6 mph
1500
25°F
E
8 mph
8 mph
1800
25°F
NE
7 mph
7 mph
2100
23°F
NE
10 mph
10 mph
