Swim in Boulogne-sur-Mer in march 2025What is the temperature of the sea in in march?

Average sea temperature in Boulogne-sur-Mer in march 2025.

In march, according to seasonal norms, the sea temperature in Boulogne-sur-Mer is:

Minimum: 43°F

Average: 46°F

Maximum: 50°F

Other useful seasonal weather averages in march:

  • Outside temperature: 43°F to 49°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 1.9mph
  • It rains a total of 2.5in, over 5 day(s).

Should we swim in Boulogne-sur-Mer in march?

No... The water temperature in Boulogne-sur-Mer in march is freezing

You won't be able to swim in Boulogne-sur-Mer in march! The water temperature is freezing, reaching as low as 43°F (and only 50°F at best)! Our advice: if you are going to Boulogne-sur-Mer this month, plan to sightsee and forget the beach!

Note also that in march, the climate is bad with an average outside temperature of 46°F, 2.5in of precipitation (over 5 days) and 85.85 % humidity.

Water and normal seasonal temperatures in Boulogne-sur-Mer in march

March
Average sea temperature 46°F
Minimum sea temperature 43°F
Maximum sea temperature 50°F
Average outside temperature 47°F
Maximum outside temperature 49°F
Minimum outside temperature 43°F
Wind speed 17.4mph
Wind temperature 38°F
Precipitation 2.5in
Number of days of rain 5 jour(s)
(15%)
Humidity 86%
Visibility in kilometers 9.3km
Cloud cover 48%
Our opinion freezing swimming

Swim elsewhere in the North of France in march

City Average T° Max. T° Our opinion
Calais in march46°F50°Ffreezing swimming
Dunkirk in march45°F49°Ffreezing swimming
Le Touquet in march47°F50°Ffreezing swimming
Bray-Dunes in march45°F49°Ffreezing swimming
Wissant in march47°F50°Ffreezing swimming
Audinghen in march46°F50°Ffreezing swimming
Escalles in march47°F50°Ffreezing swimming
Petit Fort Philippe in march47°F50°Ffreezing swimming

Swim in the North of France in march: sea temperature by city

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