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Why is the ocean water so cold near the North Shore this summer?

As of this writing on Tuesday, the water temperature at Wells Beach is 63 degrees, but Portsmouth is only 59 degrees.

MASSACHUSETTS, USA — One of the most common weather questions from New England residents along the North Shore and Cape Ann right now is: why is the ocean water still so cold? 

It’s not your imagination – ocean water temperatures from Boston Harbor points north have been exceptionally cold this summer, after a fairly typical start to the warmer water season earlier in spring.  As of this writing on Tuesday, the water temperature at Wells Beach is 63 degrees, but Portsmouth is only 59 degrees. And the ocean water is similarly at or below 60 degrees all the way into Boston Harbor!  

Believe it or not, Portsmouth averages 60 degrees water this time of the year, but Boston Harbor should be running either side of 67 degrees, which is why North Shore and Cape Ann residents are especially sensitive to the cold water this late in the year.

The cooling ocean water really became noticeable after the first week of July as two phenomena occurred back-to-back and sent water temperatures spiraling.

Read the full story on NBC 10 Boston's website here. 

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