Outside Jewell

Always Dress for the Water Temperature

It’s May. Do you know what the water temperature is?

May 1-15 = 47ºF / May 16-31  = 51ºF

Every Spring, warming air entices many people to go out in small boats when the water temperature is still deadly cold. 50ºF water doesn't sound particularly cold or dangerous if you mentally compare it to 50ºF air.

Average sea water temperatures in Portland, Maine:
  • January 34ºF
  • February 33ºF
  • March 37ºF
  • April 1-15 39ºF; April 16-30 41ºF
  • May 1-15 47ºF; May 16-31 51ºF
  • June 56ºF
  • July 61ºF
  • August 62ºF
  • September 59ºF
  • October 52ºF
  • November 47ºF
  • December 39ºF
Relative Water Temperatures

True or False?

If the combined air and water temperatures are below 120 degrees Fahrenheit, a wetsuit is a must and a drysuit is highly recommended.

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