Water temperature in Saint John (USVI) in March

Is it warm enough to swim in Saint John in March? Average water temperature in Saint John in March is 79.5°F and therefore suitable for comfortable swimming. The warmest sea in Saint John in March is 82.2°F, and the coldest is 76.8°F. Average high air temperature in Saint John in March is 82°F, and average low temperature is 70°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Saint John

Changes water temperature in Saint John in March 2025, 2024

To get an accurate forecast for the water temperature in Saint John for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Saint John, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of March.

Average water temperature in Saint John in March over a decade

Chart comparing the height of waves in Saint John in March over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

This data display average monthly climate indicators in Saint John in March based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

You can also view information about water temperature for other months by clicking on the month button below

The nearest locations with the average water temperature in March. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

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Our report for Saint John is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.