Water temperature of the English Channel in march Where to swim in the English Channel in march 2025?

Several countries border the seaside of the English Channel, including: England, Brittany, North of France, Normandy and Picardy. We measure the water temperature daily in these countries and archive it in order to calculate monthly averages, like those of the month of march.

The seasonal average for the water temperature in the month of march is between 46°F and 50°F. The lowest sea temperature measured this month is 42°F and the highest is 52°F.

The sea temperature map of the English Channel in march

The map below presents a monthly average of the water temperature of the English Channel for the month of march for several coastal cities. You can zoom and move around on the map. By clicking on the markers, you can see sea temperature details by city in march.