Hanauma Bay water temperature by month

Swimmable year-round.

Month by month

Month Typical Feels
January 77° perfect
February 76° perfect
March 76° perfect
April 77° perfect
May 77° perfect
June 78° perfect
July 79° perfect
August 80° bath-warm
September 80° bath-warm
October 81° bath-warm
November 79° perfect
December 78° perfect

The year at a glance

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

The water right now

Typically about 81° in October — bath-warm.

from the wave buoy off Mokapu Point, about 10 miles away

bath-warm

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

Hanauma is a flooded crater ringed by reef, and the shallow water people actually swim in usually runs warmer than the open windward coast the buoy reads.

About this reading

The reading comes from the wave buoy off Mokapu Point, just off the coast.

Reading from the wave buoy off Mokapu Point, about 10 miles away.

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