891
FZHW51 PHFO 210122
CWFHI1
GENERALIZED STATEWIDE COASTAL WATERS FORECAST FOR HAWAII
NATIONAL WEATHER SERVICE HONOLULU HI
322 PM HST THU AUG 20 2026
SYNOPSIS FOR HAWAIIAN COASTAL WATERS
A TROUGH JUST NORTHEAST OF THE ISLANDS WILL TRACK NORTHWESTWARD
ACROSS THE OFFSHORE WATERS, LEADING TO A PERIOD OF LIGHT AND
VARIABLE WINDS FOR MOST WATERS THROUGH TONIGHT. BY LATE FRIDAY,
MODERATE TO LOCALLY FRESH TRADES WILL BEGIN TO BUILD BACK INTO
THE REGION AS THE TROUGH EXITS TO THE NORTHWEST, HIGH PRESSURE
DRIFTS SOUTHWARD CLOSER TO THE ISLAND CHAIN, AND TROPICAL
DEPRESSION TWO-C NEARS THE STATE FROM THE SOUTHEAST. THE FORECAST
FOR THIS WEEKEND WILL DEPEND ON THE TRACK OF THIS TROPICAL
CYCLONE, BUT OVERALL THE TRADE WINDS ARE EXPECTED TO STRENGTHEN.
HAWAIIAN WATERS WITHIN 40 NAUTICAL MILES INCLUDING THE CHANNELS-
TONIGHT
EAST WINDS 10 TO 15 KNOTS. SEAS 4 TO 5 FEET. SCATTERED
SHOWERS.
FRIDAY...EAST SOUTHEAST WINDS 7 TO 10 KNOTS TO KAUAI
EAST
15 TO 20 KNOTS ELSEWHERE. SEAS 4 TO 6 FEET. WAVE DETAIL: EAST
3 FEET AT 6 SECONDS. ISOLATED SHOWERS.
FRIDAY NIGHT...EAST WINDS 10 TO 15 KNOTS TO KAUAI
EAST
NORTHEAST 20 TO 25 KNOTS ELSEWHERE. SEAS 5 TO 7 FEET. WAVE
DETAIL: EAST 4 FEET AT 7 SECONDS. ISOLATED SHOWERS.
SATURDAY
EAST NORTHEAST WINDS 25 TO 30 KNOTS. SEAS 6 TO
9 FEET. WAVE DETAIL: EAST 5 FEET AT 7 SECONDS. SCATTERED SHOWERS.
SATURDAY NIGHT
EAST NORTHEAST WINDS 25 TO 35 KNOTS ALENUIHAHA
CHANNEL...EAST NORTHEAST 20 TO 25 KNOTS ELSEWHERE. SEAS 9 TO
12 FEET. NUMEROUS SHOWERS.
SUNDAY
EAST NORTHEAST WINDS 30 TO 40 KNOTS ALENUIHAHA
CHANNEL...EAST NORTHEAST 25 TO 30 KNOTS ELSEWHERE. SEAS 9 TO
13 FEET. SCATTERED SHOWERS.
SUNDAY NIGHT
EAST NORTHEAST WINDS 25 TO 30 KNOTS. SEAS 8 TO
11 FEET. SCATTERED SHOWERS.
MONDAY
EAST WINDS 25 TO 30 KNOTS, EASING TO 20 TO 25 KNOTS.
SEAS 6 TO 9 FEET. SCATTERED SHOWERS.
TUESDAY
EAST WINDS 20 TO 25 KNOTS. SEAS 6 TO 7 FEET. SCATTERED
SHOWERS THROUGH THE NIGHT. ISOLATED SHOWERS THROUGH THE DAY.
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