Atlantic Beach, FL water temperature

Typically about 85° in August — bath-warm.

from the Mayport station at the St. Johns River mouth, about 5 miles away

bath-warm

bath-warm 80° and up perfect 72–79° refreshing 65–71° brisk below 65° 85° typical for August

The year at a glance

Swimmable from April through November.

swimmable 50° 60° 70° 80° 90° 85° 58° JFMAMJJASOND January: typically 58° — brisk February: typically 60° — brisk March: typically 65° — refreshing April: typically 71° — refreshing May: typically 78° — perfect June: typically 81° — bath-warm July: typically 83° — bath-warm August: typically 85° — bath-warm September: typically 82° — bath-warm October: typically 76° — perfect November: typically 70° — refreshing December: typically 62° — brisk

Month by month

Month Typical Feels
January 58° brisk
February 60° brisk
March 65° refreshing
April 71° refreshing
May 78° perfect
June 81° bath-warm
July 83° bath-warm
August 85° bath-warm
September 82° bath-warm
October 76° perfect
November 70° refreshing
December 62° brisk

About this reading

The Mayport station at the St. Johns River mouth sits in an inlet; surf-zone water can run a few degrees off this reading.

Reading from the Mayport station at the St. Johns River mouth, about 5 miles away.

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