Poipu Beach water temperature

Typically about 82° in August — bath-warm.

from the Nawiliwili Harbor station, about 8 miles away

bath-warm

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

The year at a glance

Swimmable year-round.

swimmable 70° 80° 90° 83° 76° JFMAMJJASOND January: typically 78° — perfect February: typically 76° — perfect March: typically 76° — perfect April: typically 77° — perfect May: typically 79° — perfect June: typically 80° — bath-warm July: typically 81° — bath-warm August: typically 82° — bath-warm September: typically 83° — 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 76° perfect
March 76° perfect
April 77° perfect
May 79° perfect
June 80° bath-warm
July 81° bath-warm
August 82° bath-warm
September 83° bath-warm
October 82° bath-warm
November 80° bath-warm
December 79° perfect

About this reading

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

Reading from the Nawiliwili Harbor station, about 8 miles away.

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