Current Sea Water Temperature:
+36.8°F
| Maximum Sea Water Temperature in December: | 46.6°F |
| Minimum Sea Water Temperature in December: | 35.8°F |
| Average water temperature in December: | 40.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 28 | 36.8°F | December 23 | 38.4°F |
| December 27 | 37.6°F | December 22 | 39.0°F |
| December 26 | 37.0°F | December 21 | 40.2°F |
| December 25 | 37.6°F | December 20 | 39.6°F |
| December 24 | 38.4°F | December 19 | 38.0°F |
When is the Warmest Sea for Milwaukee?
According to our data for the last three years for Milwaukee the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Milwaukee was 73.5°F. The maximum and minimum values were 70.4°F and 75.8°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Milwaukee was 70.7°F. The maximum and minimum values were 66.2°F and 78.2°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Milwaukee was 68.8°F. The maximum and minimum values were 65.0°F and 72.2°F respectively.
USA Resorts:
NAME
F°
| Chicago |  |
+48 |
| Hawaii |  |
+74 |
| Honolulu | |
+74 |
| Houston |  |
+66 |
| Las Vegas | |
+46 |
| Los Angeles | |
+48 |
| Maui | |
+68 |
| Miami | |
+62 |
| Miami Beach | |
+70 |
| New York | |
+14 |
| San Diego | |
+48 |
| San Francisco | |
+44 |
| Sarasota |  |
+56 |
| Tampa | |
+56 |
| Washington | |
+34 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Milwaukee
Local time: 05:35
28 dec, sunday
| 0600 |  |
38°F | NW 5 mph |
| 0900 |  |
38°F | NW 3 mph |
| 1200 |  |
40°F | N 5 mph |
| 1500 | |
40°F | N 5 mph |
| 1800 | |
40°F | N 6 mph |
| 2100 | |
36°F | E 23 mph |
29 dec, monday
| 0000 |  |
30°F | E 29 mph |
| 0300 |  |
20°F | E 32 mph |