239
FZHW51 PHFO 200141
CWFHI1
GENERALIZED STATEWIDE COASTAL WATERS FORECAST FOR HAWAII
NATIONAL WEATHER SERVICE HONOLULU HI
341 PM HST WED AUG 19 2026
SYNOPSIS FOR HAWAIIAN COASTAL WATERS
HIGH PRESSURE TO THE FAR NORTHEAST WILL GRADUALLY WEAKEN OVER THE
NEXT COUPLE OF DAYS. AS A TROUGH TO THE EAST OF THE ISLANDS
PASSES ON A WESTWARD TRACK ACROSS THE REGION, MODERATE TRADES WILL
BECOME LIGHT AND VARIABLE BY THURSDAY. BY LATE FRIDAY, MODERATE
TO LOCALLY FRESH TRADES WILL BEGIN TO BUILD BACK INTO THE REGION
AS THE HIGH DRIFTS SOUTHWARD CLOSER TO THE ISLAND CHAIN AND AN
AREA BEING WATCHED CLOSELY FOR POTENTIAL TROPICAL DEVELOPMENT
NEARS THE STATE FROM THE SOUTHEAST. THE FORECAST FOR THIS WEEKEND
WILL DEPEND ON HOW THIS NEXT POTENTIAL TROPICAL CYCLONE EVOLVES.
HAWAIIAN WATERS WITHIN 40 NAUTICAL MILES INCLUDING THE CHANNELS-
TONIGHT
EAST NORTHEAST WINDS 15 TO 20 KNOTS. SEAS 3 TO 5 FEET.
WAVE DETAIL: EAST 4 FEET AT 6 SECONDS. ISOLATED SHOWERS.
THURSDAY
EAST NORTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO
5 FEET. WAVE DETAIL: EAST 3 FEET AT 5 SECONDS. ISOLATED SHOWERS.
THURSDAY NIGHT
EAST NORTHEAST WINDS 10 TO 15 KNOTS. SEAS 3 TO
4 FEET. SCATTERED SHOWERS.
FRIDAY
EAST NORTHEAST WINDS 15 TO 20 KNOTS ALENUIHAHA
CHANNEL...EAST 7 TO 10 KNOTS ELSEWHERE. SEAS 3 TO 5 FEET. WAVE
DETAIL: EAST 3 FEET AT 6 SECONDS. SCATTERED SHOWERS.
FRIDAY NIGHT
EAST WINDS 15 TO 20 KNOTS. SEAS 5 TO 7 FEET.
SCATTERED SHOWERS.
SATURDAY...EAST WINDS 10 TO 15 KNOTS TO KAUAI
EAST NORTHEAST
20 TO 25 KNOTS ELSEWHERE. SEAS 7 TO 10 FEET. SCATTERED SHOWERS.
SATURDAY NIGHT...EAST WINDS 15 TO 20 KNOTS TO KAUAI
EAST
NORTHEAST 25 TO 30 KNOTS ELSEWHERE. SEAS 10 TO 14 FEET. ISOLATED
SHOWERS.
SUNDAY
TO KAUAI, EAST NORTHEAST WINDS 15 TO 20 KNOTS, RISING
TO 20 TO 25 KNOTS. ELSEWHERE, EAST NORTHEAST WINDS 25 TO
30 KNOTS, VEERING TO EAST 20 TO 25 KNOTS. SEAS 11 TO 15 FEET,
SUBSIDING TO 8 TO 10 FEET. SCATTERED HEAVY SHOWERS.
MONDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 7 TO 9 FEET. SCATTERED
HEAVY SHOWERS.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page