Weather in March
March invariably initiates the weather change in
Cape Cod National Seashore. Sea temperatures barely shift from the previous month, stabilizing around 39°F (3.9°C). However, daylight hours noticeably increase, averaging 12 hours daily—providing welcome relief from the longer winter nights. The first signs of the forthcoming spring are evident in March's increased daylight and practically unchanged sea temperatures.
Ocean temperature
March is the month with the coldest seawater in Cape Cod National Seashore, with an average ocean temperature of 39°F (3.9°C).
Note: In relation to swimming, the extreme cold, danger, and potential fatality of this situation are apparent. Without suitable insulated waterproof clothing, the onset of hypothermia is quick.
Daylight
The average length of the day in March is 11h and 58min.
On the first day of the month, sunrise is at 6:13 am and sunset at 5:30 pm EST. On the last day of March, sunrise is at 6:22 am and sunset at 7:04 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday,
November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.
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