Swim in Cape Cod National Seashore in march 2025What is the temperature of the sea in in march?

Average sea temperature in Cape Cod National Seashore in march 2025.

In march, according to seasonal norms, the sea temperature in Cape Cod National Seashore is:

Minimum: 36°F

Average: 40°F

Maximum: 42°F

Other useful seasonal weather averages in march:

  • Outside temperature: 37°F to 42°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at -1.9mph
  • It rains a total of 3.5in, over 6 day(s).

Should we swim in Cape Cod National Seashore in march?

No... The water temperature in Cape Cod National Seashore in march is freezing

You won't be able to swim in Cape Cod National Seashore in march! The water temperature is freezing, reaching as low as 36°F (and only 42°F at best)! Our advice: if you are going to Cape Cod National Seashore this month, plan to sightsee and forget the beach!

Note also that in march, the climate is very bad with an average outside temperature of 39°F, 3.5in of precipitation (over 6 days) and 80.21 % humidity.

Water and normal seasonal temperatures in Cape Cod National Seashore in march

March
Average sea temperature 40°F
Minimum sea temperature 36°F
Maximum sea temperature 42°F
Average outside temperature 40°F
Maximum outside temperature 43°F
Minimum outside temperature 38°F
Wind speed 21.8mph
Wind temperature 27°F
Precipitation 3.5in
Number of days of rain 6 jour(s)
(19%)
Humidity 81%
Visibility in kilometers 8.5km
Cloud cover 50%
Our opinion freezing swimming

Swim elsewhere in the United States (USA) in march

City Average T° Max. T° Our opinion
California in march59°F62°Ffreezing swimming
Washington D. C. in march47°F50°Ffreezing swimming
Boston in march39°F42°Ffreezing swimming
Miami (Florida) in march76°F81°Fpleasant swimming
New York City in march40°F44°Ffreezing swimming
Seattle in march46°F49°Ffreezing swimming
Houston in march63°F71°Fcool swimming
Long Beach (Washington) in march49°F53°Ffreezing swimming
Myrtle Beach in march57°F61°Ffreezing swimming
Philadelphia in march41°F45°Ffreezing swimming
Portland in march49°F52°Ffreezing swimming
Atlantic City in march41°F45°Ffreezing swimming
Baltimore in march45°F49°Ffreezing swimming
Bar Harbor (Maine) in march39°F42°Ffreezing swimming
Brooklyn in march41°F45°Ffreezing swimming
Carolina Beach in march59°F65°Ffreezing swimming
Gulf Shores (Alabama) in march64°F71°Fcool swimming
Hampton Beach in march39°F42°Ffreezing swimming
Maryland in march46°F49°Ffreezing swimming
Mobile (Alabama) in march64°F71°Fcool swimming

Swim in the United States (USA) in march: sea temperature by city

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