Long Beach Island (LBI) water temperature by month

Swimmable from July through September.

Month by month

Month Typical Feels
January 41° brisk
February 41° brisk
March 45° brisk
April 51° brisk
May 58° brisk
June 64° brisk
July 70° refreshing
August 71° refreshing
September 72° perfect
October 65° refreshing
November 55° brisk
December 45° brisk

The year at a glance

swimmable 30° 40° 50° 60° 70° 80° 72° 41° JFMAMJJASOND January: typically 41° — brisk February: typically 41° — brisk March: typically 45° — brisk April: typically 51° — brisk May: typically 58° — brisk June: typically 64° — brisk July: typically 70° — refreshing August: typically 71° — refreshing September: typically 72° — perfect October: typically 65° — refreshing November: typically 55° — brisk December: typically 45° — brisk

The water right now

Typically about 65° in October — refreshing.

from the Atlantic City pier station, about 24 miles down the coast

refreshing

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

Everyone here calls it LBI — eighteen miles of barrier island from Barnegat Light at the north end down to Holgate, facing the open Atlantic the whole way. The number on this page is that ocean side; Barnegat Bay behind the island is shallow and runs warmer through the summer.

About this reading

The Atlantic City pier station sits on a pier in the surf zone — about as close to the swim water as a sensor gets.

Reading from the Atlantic City pier station, about 24 miles down the coast. That's a long way down the coast — treat this as the area's surf temperature, not the sandbar in front of you.

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