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Kauai Surf Forecast for August 21, 2025

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Shores Tonight Thursday
Surf Surf
PM AM AM PM
North Facing 0-2 0-2 0-2 0-2
West Facing 1-3 1-3 2-4 2-4
South Facing 2-4 2-4 3-5 3-5
East Facing 2-4 2-4 2-4 2-4
TONIGHT

Weather Partly sunny until 6 PM, then partly
cloudy. Scattered showers.
Low Temperature In the mid 70s.
Winds East winds 10 to 15 mph.
Tides
Hanalei Bay Low 0.4 feet 08:19 PM HST.
High 1.0 feet 01:14 AM HST.
Nawiliwili Low 0.5 feet 09:41 PM HST.
High 0.9 feet 02:15 AM HST.
THURSDAY

Weather Mostly sunny. Scattered showers.
High Temperature In the upper 80s.
Winds East winds around 15 mph.
Tides
Hanalei Bay Low 0.0 feet 06:21 AM HST.
High 2.5 feet 02:10 PM HST.
Nawiliwili Low 0.0 feet 07:43 AM HST.
High 2.3 feet 03:11 PM HST.
Sunrise 6:17 AM HST.
Sunset 7:04 PM HST.

Swell Summary

A series of small, medium period south (170-190 degree) swells is expected throughout the rest of this week, with surf near the summertime average through around Saturday along south-facing shores. The largest of these south swells looks to arrive Thursday into Friday. Surf heights should decrease Sunday into early next week as these swells fade. Another small, long period south swell could arrive by the middle of next week.

Choppy conditions will continue for east-facing shores through the forecast period due to the persistent fresh trades. Surf along north facing shores will remain nearly flat through the next week.

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Data Courtesy of NOAA.gov and SwellInfo.com

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