Current sea water temperature:
+54.5°F
| Minimum sea water temperature in May: | 65.3°F |
| Maximum sea water temperature in May: | 44.2°F |
| Average sea water temperature in May: | 54.9°F |
| more information | |
14 days
forecast
forecast
| Green Bay |
monthly
weather
weather
| Green Bay |
Sea water temperature for the last 10 days:
| May 19 | 54.5°F | May 14 | 53.6°F |
| May 18 | 54.1°F | May 13 | 53.1°F |
| May 17 | 54.1°F | May 12 | 53.1°F |
| May 16 | 53.6°F | May 11 | 53.6°F |
| May 15 | 52.9°F | May 10 | 53.2°F |
Monthly sea water temperature, °F
When is the warmest sea in Green Bay?
Based on the data about daily sea water temperature for the last three years the warmest sea in Green Bay was noticed in July, August and September.
Monthly Sea Temperatures in Green Bay, °F
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 75.8°F. The highest and lowest sea temperatures during the month were 81.1°F and 73.0°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.6°F. The highest and lowest sea temperatures during the month were 76.8°F and 68.0°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 67.1°F. The highest and lowest sea temperatures during the month were 71.1°F and 61.9°F.
current
weather
weather
| Green Bay |
weather in
May
May
| Green Bay |
Best time for vacation in Green Bay
Green Bay on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Green Bay
Local time: 07:30
May 19, tuesday
0900
68°F
NE
18 mph
18 mph
1200
68°F
E
15 mph
15 mph
1500
66°F
E
19 mph
19 mph
1800
57°F
E
16 mph
16 mph
2100
50°F
E
13 mph
13 mph
May 20, wednesday
0000
45°F
SE
10 mph
10 mph
0300
41°F
SE
6 mph
6 mph
0600
41°F
SE
6 mph
6 mph
