Waikiki Beach water temperature

Typically about 81° in August — bath-warm.

from the Honolulu Harbor station, about 3 miles away

bath-warm

bath-warm 80° and up perfect 72–79° refreshing 65–71° brisk below 65° 81° typical for August

Waikiki's swimming water sits behind a shallow reef flat that holds the day's heat, so it usually runs a degree or two above the open ocean outside the break.

The year at a glance

Swimmable year-round.

swimmable 70° 80° 90° 82° 77° JFMAMJJASOND January: typically 78° — perfect February: typically 77° — perfect March: typically 77° — perfect April: typically 78° — perfect May: typically 79° — perfect June: typically 80° — bath-warm July: typically 81° — bath-warm August: typically 81° — bath-warm September: typically 82° — bath-warm October: typically 82° — bath-warm November: typically 80° — bath-warm December: typically 79° — perfect

Month by month

Month Typical Feels
January 78° perfect
February 77° perfect
March 77° perfect
April 78° perfect
May 79° perfect
June 80° bath-warm
July 81° bath-warm
August 81° bath-warm
September 82° bath-warm
October 82° bath-warm
November 80° bath-warm
December 79° perfect

About this reading

The Honolulu Harbor station sits in the harbor; open-water surf can read a few degrees different.

Reading from the Honolulu Harbor station, about 3 miles away.

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