Monthly Green Bay water temperature chart
The bar chart below shows the average monthly sea temperatures at Green Bay over the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 3.1 | 2.1 | 2.5 | 3.9 | 5.6 | 8.1 | 14.2 | 19.3 | 17.1 | 12.0 | 8.1 | 5.3 |
| °F | 37.6 | 35.8 | 36.5 | 39 | 42.1 | 46.6 | 57.6 | 66.7 | 62.8 | 53.6 | 46.6 | 41.5 |
Monthly average max / min water temperatures
The graph below shows the range of monthly water temperatures over several years.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 2 | 1.6 | 1.6 | 2.8 | 4.5 | 6.3 | 9.5 | 17 | 14.3 | 8.9 | 5.6 | 3.7 |
| Max °C | 4.2 | 2.7 | 3.5 | 5 | 6.8 | 10 | 18.9 | 21.7 | 20 | 15.1 | 10.6 | 7 |
| Min °F | 36.5 | 35.3 | 35.6 | 37.9 | 41 | 44.8 | 52.9 | 64.4 | 60 | 50.5 | 44.1 | 39.9 |
| Max °F | 38.7 | 36.4 | 37.5 | 40.1 | 43.3 | 48.5 | 62.3 | 69.1 | 65.7 | 56.7 | 49.1 | 43.2 |