How warm is United States water in spring? In April sea water temperature in some cities of United States is above 68°F and it is enough for comfortable bathing. Based on average water temperature observations over the past ten years, the warmest sea in United States in April was 79.5°F (in Miami), and the coldest water 28.8°F (in Prudhoe Bay). To find out the sea temperature today and in the coming days, go to Current sea temperature in United States
Several popular the US resorts with average ocean temperatures in April over the past years. For sea temperatures in other locations, select a state below or search
The map shows United States average temperature water in April in some coastal cities
For the searchability, all United States cities and resorts are separated by state. To find the temperature of the water, select the state and then the city. If you do not know in which state the place is of interest to you, go to the section United States all cities and resorts
To find out what the water temperature was in United States any day over a period of the last ten years, select the month