Hanalei Bay water temperature by month

Swimmable year-round.

Month by month

Month Typical Feels
January 76° perfect
February 75° perfect
March 74° perfect
April 75° perfect
May 76° perfect
June 77° perfect
July 77° perfect
August 79° perfect
September 80° bath-warm
October 80° bath-warm
November 79° perfect
December 76° perfect

The year at a glance

swimmable 60° 70° 80° 90° 80° 74° JFMAMJJASOND January: typically 76° — perfect February: typically 75° — perfect March: typically 74° — perfect April: typically 75° — perfect May: typically 76° — perfect June: typically 77° — perfect July: typically 77° — perfect August: typically 79° — perfect September: typically 80° — bath-warm October: typically 80° — bath-warm November: typically 79° — perfect December: typically 76° — perfect

The water right now

Typically about 80° in October — bath-warm.

from the wave buoy off Hanalei, about 7 miles away

bath-warm

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

Two miles of crescent sand under Kauai's north-shore cliffs, with the calmest swimming down at the pier end.

About this reading

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

Reading from the wave buoy off Hanalei, about 7 miles away.

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