Hapuna Beach water temperature

Typically about 82° in August — bath-warm.

from the Kawaihae Harbor station, about 3 miles away

bath-warm

bath-warm 80° and up perfect 72–79° refreshing 65–71° brisk below 65° 82° typical for August

Half a mile of white sand on an island mostly made of lava — Hapuna is where the Big Island actually swims.

The year at a glance

Swimmable year-round.

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

About this reading

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

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

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