Measurements:
°C
°F
Green Bay
62°F
NE 6 mph
Feels like: 62°F
Precip: 14%
World Resorts USA Green Bay Weather

Green Bay Sea Water Temperature

Current Sea Water Temperature:
+71.6°F
Maximum Sea Water Temperature in June: 77.8°F
Minimum Sea Water Temperature in June: 59.8°F
Average water temperature in June: 70.1°F

Sea Water Temperature for the Last 10 Days:

June 24 71.6°F June 19 70.0°F
June 23 70.8°F June 18 71.6°F
June 22 70.2°F June 17 72.6°F
June 21 70.0°F June 16 73.6°F
June 20 70.2°F June 15 73.2°F

When is the Warmest Sea for Green Bay?

According to our data for the last three years for Green Bay the highest average sea water temperature was in July, August and June.

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Green Bay was 78.7°F. The maximum and minimum values were 75.6°F and 84.6°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Green Bay was 76.2°F. The maximum and minimum values were 70.0°F and 79.8°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Green Bay was 71.6°F. The maximum and minimum values were 67.2°F and 75.6°F respectively.

Best Time to Visit Green Bay
The most sunny months:
August 14 days
September 13 days
October 13 days
The most warm months:
July 81.2 °F
August 80.6 °F
June 76.5 °F
Warmest sea temperature:
July 77.6 °F
August 76.2 °F
June 70.1 °F
The most cold months:
January 20.8 °F
February 24.3 °F
December 28.0 °F
The most rainy months:
June 3 days
April 3 days
August 2 days
The most windy months:
April 11 mph
March 11 mph
November 11 mph

Green Bay on the Weather Map

USA Resorts:
NAME
Chicago +66
Hawaii +80
Honolulu +80
Houston +82
Las Vegas +94
Los Angeles +66
Maui +74
Miami +80
Miami Beach +82
Myrtle Beach +78
New York +70
San Diego +68
San Francisco +58
Sarasota +84
Tampa +84
24 Hours Weather Forecast
Green Bay
Local time: 00:28
25 jun, thursday
0300 62°F
E
6 mph
0600 62°F
E
6 mph
0900 66°F
SE
9 mph
1200 66°F
S
11 mph
1500 68°F
S
7 mph
1800 66°F
SW
7 mph
2100 60°F
NW
4 mph
26 jun, friday
0000 56°F
SE
1 mph