World Resorts USA Green Bay Weather

Green Bay Sea Temperature in September

Average sea water temperature in September:
+68.1°F
Minimum sea water temperature in September: 74.5°F
Maximum sea water temperature in September: 61.7°F

Daily 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.

Monthly sea water temperature in Green Bay, °F

Which USA resorts have warmest sea in September?

Place name September 2025 September 2024
Key West 86.9°F 87.4°F
Islamorada 86.7°F 87.3°F
Key Largo 86.6°F 87.1°F
Fort Lauderdale 86.4°F 86.4°F
West Palm Beach 86.2°F 86.4°F
Everglades 86.2°F 87.0°F
Miami Beach 86.1°F 86.3°F
Naples 86.1°F 87.2°F
Marco Island 86.0°F 87.2°F
South Padre Island 86.0°F 85.8°F
Corpus Christi 85.8°F 84.7°F
Miami 85.8°F 86.0°F
Sanibel Island 85.7°F 87.0°F
Galveston Island 85.5°F 84.4°F
Galveston 85.5°F 83.7°F
Houston 84.9°F 83.4°F
Siesta Key 84.9°F 86.8°F
Sarasota 84.8°F 86.7°F
Cocoa Beach 84.6°F 85.2°F
Tampa 84.3°F 86.0°F

Best time for vacation in Green Bay

Sunniest months:
August 14 days
September 13 days
October 13 days
Warmest months:
July 78.0 °F
August 77.5 °F
June 73.8 °F
Warmest sea temp:
July 74.9 °F
August 73.5 °F
September 68.1 °F
Coldest months:
January 24.4 °F
February 25.8 °F
December 30.2 °F
Rainiest months:
June 3 days
April 3 days
August 2 days
Windiest months:
April 11.0 mph
November 10.9 mph
March 10.9 mph

Green Bay on a weather map

Green Bay
+32°F
N 11 mph
Feels like: +25°F
Precip.: 0%
Places in USA:
Name
°F
+30°F
+68°F
+68°F
+45°F
+55°F
+68°F
+73°F
+64°F
+30°F
+54°F
+46°F
+57°F
+54°F
+46°F
+34°F
24 Hours Forecast
Green Bay
Local time: 04:14
January 13, tuesday
0600
34°F
N
13 mph
0900
32°F
NE
17 mph
1200
34°F
E
19 mph
1500
34°F
E
19 mph
1800
36°F
E
18 mph
2100
34°F
E
15 mph
January 14, wednesday
0000
34°F
E
13 mph
0300
25°F
SE
18 mph
Units of measurement: °C / °F