921
FZHW51 PHFO 130337
CWFHI1
GENERALIZED STATEWIDE COASTAL WATERS FORECAST FOR HAWAII
NATIONAL WEATHER SERVICE HONOLULU HI
537 PM HST WED AUG 12 2026
SYNOPSIS FOR HAWAIIAN COASTAL WATERS
HIGH PRESSURE TO THE FAR NORTHEAST WILL SLOWLY DRIFT INTO A
POSITION JUST NORTH OF THE HAWAIIAN ISLANDS INTO THE WEEKEND,
PRODUCING MODERATE TO LOCALLY STRONG TRADE WINDS ACROSS THE
REGION. THE WEATHER PATTERN WILL CHANGE SIGNIFICANTLY THIS
WEEKEND AS EARLY AS FRIDAY AND WILL CONTINUE TO DETERIORATE OVER
THE WEEKEND. TROPICAL STORM CONDITIONS WILL BE POSSIBLE ACROSS
ALL COASTAL WATERS THIS WEEKEND, WITH THE POTENTIAL FOR HURRICANE
CONDITIONS ACROSS SELECT WATERS.
HAWAIIAN WATERS WITHIN 40 NAUTICAL MILES INCLUDING THE CHANNELS-
..SMALL CRAFT ADVISORY
TONIGHT
EAST NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 6 TO 8 FEET.
WAVE DETAIL: EAST 5 FEET AT 6 SECONDS AND SOUTH SOUTHWEST 4 FEET
AT 16 SECONDS. ISOLATED SHOWERS.
THURSDAY
EAST NORTHEAST WINDS 25 TO 30 KNOTS ALENUIHAHA
CHANNEL...EAST NORTHEAST 15 TO 20 KNOTS ELSEWHERE. SEAS 7 TO
9 FEET. WAVE DETAIL: EAST 5 FEET AT 7 SECONDS AND SOUTH SOUTHWEST
5 FEET AT 15 SECONDS. ISOLATED SHOWERS.
THURSDAY NIGHT
EAST NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 6 TO
9 FEET. WAVE DETAIL: EAST 6 FEET AT 7 SECONDS AND SOUTH SOUTHWEST
4 FEET AT 14 SECONDS. ISOLATED SHOWERS.
FRIDAY
NORTHEAST WINDS 20 TO 25 KNOTS. SEAS 8 TO 11 FEET. WAVE
DETAIL: EAST 7 FEET AT 9 SECONDS AND SOUTH SOUTHWEST 4 FEET AT
14 SECONDS. SCATTERED SHOWERS.
FRIDAY NIGHT
EAST NORTHEAST WINDS 20 TO 25 KNOTS. TROPICAL
STORM CONDITIONS POSSIBLE AROUND THE BIG ISLAND. SEAS 11 TO 15
FEET. SCATTERED SHOWERS.
SATURDAY THROUGH SUNDAY
TROPICAL STORM CONDITIONS POSSIBLE.
SEAS 12 TO 24 FEET. HEAVY SHOWERS.
MONDAY
EAST WINDS 15 TO 20 KNOTS. SEAS 7 TO 10 FEET, SUBSIDING
TO 6 TO 7 FEET. SCATTERED SHOWERS THROUGH THE NIGHT, THEN
ISOLATED SHOWERS THROUGH THE DAY.
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