West Dennis Beach water temperature by month

Swimmable from July through September.

Month by month

Month Typical Feels
January 39° brisk
February 37° brisk
March 41° brisk
April 47° brisk
May 56° brisk
June 65° refreshing
July 74° perfect
August 74° perfect
September 70° refreshing
October 62° brisk
November 52° brisk
December 43° brisk

The year at a glance

swimmable 30° 40° 50° 60° 70° 80° 74° 37° JFMAMJJASOND January: typically 39° — brisk February: typically 37° — brisk March: typically 41° — brisk April: typically 47° — brisk May: typically 56° — brisk June: typically 65° — refreshing July: typically 74° — perfect August: typically 74° — perfect September: typically 70° — refreshing October: typically 62° — brisk November: typically 52° — brisk December: typically 43° — brisk

The water right now

Typically about 62° in October — brisk.

from the buoy in Nantucket Sound, about 13 miles away

brisk

bath-warm 80° and up perfect 72–79° refreshing 65–71° brisk below 65° 62° typical for October

About this reading

The reading comes from the buoy in Nantucket Sound, just off the coast.

Reading from the buoy in Nantucket Sound, about 13 miles away.

Warm water says nothing about surf, rip currents, or bacteria — check local lifeguard flags and advisories.