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Select Product Type: All | Routine Bulletins/FCSTS | Warnings/Watches/Advisories | HAWN Weather | Tropical | Marine | Aviation | Daily Obs | Special
Oahu Surf Observation and Forecast/Coastal Forecast for Hawaiian Waters

477
FZHW50 PHFO 191949
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
949 AM HST Tue Jan 19 2021

Hawaiian coastal waters within 40 nautical miles including the
Hawaiian Islands Humpback Whale National Marine Sanctuary.

PHZ100-200815-
949 AM HST Tue Jan 19 2021

.Synopsis for Hawaiian coastal waters...
A surface trough near Oahu will move steadily west through
tonight, and will be west of Kauai by Wednesday. Near gale-force
northeast winds will prevail west of the trough axis, with
moderate easterly trade winds east of the trough. After the
trough exits the area, high pressure far northeast of the islands
will support moderate to fresh trade winds into the weekend.

$$

PHZ110-200815-
Kauai Northwest Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds to 30 knots. Wind waves 10 feet.
Northwest swell 12 feet. Isolated heavy showers late in the
morning. Isolated thunderstorms through the day. Scattered heavy
showers in the afternoon.
.TONIGHT...Northeast winds to 25 knots. Wind waves 9 feet. North
swell 11 feet decreasing to 9 feet after midnight. Numerous
showers and isolated thunderstorms.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. North swell
7 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 6 feet. Scattered showers.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. Northwest
swell 5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 5 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 6 to 8 feet. Northwest
swell 8 to 10 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 feet. Northwest
swell 10 to 12 feet. Scattered showers.

$$

PHZ111-200815-
Kauai Windward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds to 30 knots. Wind waves 9 feet.
Northwest swell 12 feet. Scattered heavy showers late in the
morning. Isolated thunderstorms through the day. Occasional heavy
showers in the afternoon.
.TONIGHT...Northeast winds 20 knots. Wind waves 9 feet. North
swell 11 feet decreasing to 9 feet after midnight. Showers and
isolated thunderstorms.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. North swell
7 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 6 feet. Scattered showers.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. Northwest
swell 5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 7 to 8 feet. Northwest
swell 7 to 9 feet. Scattered showers.
.SATURDAY...East winds 20 knots. Wind waves 8 to 9 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ112-200815-
Kauai Leeward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds to 30 knots. Wind waves 10 feet.
Northwest swell 12 feet. Isolated heavy showers and
thunderstorms.
.TONIGHT...Northeast winds to 25 knots. Wind waves 9 feet. North
swell 11 feet decreasing to 9 feet after midnight. Numerous
showers and isolated thunderstorms.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. North swell
7 feet. Isolated showers in the morning, then scattered showers
in the afternoon.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. Northwest
swell 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 4 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 6 to 8 feet. Northwest
swell 8 to 10 feet. Isolated showers.
.SATURDAY...East winds 20 knots. Wind waves 7 to 8 feet.
Northwest swell 10 to 12 feet. Scattered showers.

$$

PHZ113-200815-
Kauai Channel-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds to 30 knots. Wind waves 10 feet.
Northwest swell 12 feet. Heavy showers likely late in the
morning. Isolated thunderstorms through the day. Occasional heavy
showers in the afternoon.
.TONIGHT...East winds 20 knots. Wind waves 9 feet. North swell
11 feet decreasing to 9 feet after midnight. Numerous showers and
isolated thunderstorms.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. North swell
7 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. North swell
5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet. North
swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 7 to 8 feet. Northwest
swell 7 to 9 feet. Scattered showers.
.SATURDAY...East winds 20 knots. Wind waves 8 feet. Northwest
swell 9 to 11 feet. Scattered showers.

$$

PHZ114-200815-
Oahu Windward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds to 30 knots. Wind waves 10 feet.
Northwest swell 12 feet. Occasional heavy showers late in the
morning. Isolated thunderstorms through the day. Scattered heavy
showers in the afternoon.
.TONIGHT...East winds to 25 knots easing to 15 knots after
midnight. Wind waves 9 feet. North swell 11 feet decreasing to
9 feet after midnight. Isolated thunderstorms in the evening.
Showers through the night.
.WEDNESDAY...East winds 15 knots. Wind waves 6 feet. North swell
8 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 7 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 6 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 8 to 9 feet. Northwest
swell 7 to 9 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 10 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ115-200815-
Oahu Leeward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds to 25 knots. Wind waves 10 feet.
Northwest swell 10 feet. Scattered heavy showers and isolated
thunderstorms.
.TONIGHT...East winds 20 knots. Wind waves 7 feet. Northwest
swell 8 feet. Isolated thunderstorms in the evening. Scattered
showers through the night.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. North swell
7 feet. Isolated showers through the day.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 4 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 4 feet. Northwest
swell 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds 15 knots. Wind waves 4 feet.
Northwest swell 4 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 4 to 6 feet. Northwest
swell 6 to 8 feet. Isolated showers.
.SATURDAY...East winds 15 knots. Wind waves 5 to 6 feet.
Northwest swell 7 to 9 feet. Isolated showers.

$$

PHZ116-200815-
Kaiwi Channel-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds to 25 knots. Wind waves 10 feet.
Northwest swell 12 feet. Isolated showers late in the morning.
Isolated thunderstorms through the day. Scattered showers in the
afternoon.
.TONIGHT...Northeast winds to 25 knots becoming east 15 knots
after midnight. Wind waves 7 feet. North swell 11 feet decreasing
to 9 feet after midnight. Isolated thunderstorms in the evening.
Scattered showers through the night.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. North swell
7 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 6 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. North swell
6 feet. Isolated showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet. North
swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 8 to 9 feet. Northwest
swell 6 to 8 feet. Isolated showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 10 feet.
Northwest swell 9 to 11 feet. Isolated showers.

$$

PHZ117-200815-
Maui County Windward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...East winds to 25 knots easing to 15 knots in the
afternoon. Wind waves 9 feet. Northwest swell 13 feet. Isolated
showers late in the morning. Isolated thunderstorms through the
day. Scattered showers in the afternoon.
.TONIGHT...East winds 15 knots. Wind waves 7 feet. Northwest
swell 11 feet becoming north 9 feet after midnight. Numerous
showers and isolated thunderstorms in the evening, then scattered
showers after midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. North swell
8 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 7 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 6 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 8 to 9 feet. Northwest
swell 6 to 8 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 11 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ118-200815-
Maui County Leeward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds 20 knots. Wind waves 9 feet.
Northwest swell 8 feet. Isolated showers late in the morning.
Isolated thunderstorms through the day. Scattered showers in the
afternoon.
.TONIGHT...Northeast winds 15 knots. Wind waves 7 feet. North
swell 7 feet. Isolated thunderstorms in the evening. Scattered
showers through the night.
.WEDNESDAY...East winds 15 knots. Wind waves 4 feet. North swell
6 feet. Isolated showers.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 4 feet.
North swell 5 feet. Isolated showers.
.THURSDAY...East winds 20 knots. Wind waves 4 feet. North swell
4 feet. Isolated showers.
.THURSDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 6 feet. Northwest swell
4 to 6 feet. Isolated showers.
.SATURDAY...East winds 15 knots. Wind waves 6 to 8 feet.
Northwest swell 6 to 7 feet. Isolated showers.

$$

PHZ119-200815-
Maalaea Bay-
949 AM HST Tue Jan 19 2021

.REST OF TODAY...North winds 20 knots. Wind waves 3 feet.
Scattered showers and isolated thunderstorms.
.TONIGHT...North winds 20 knots easing to 10 knots after
midnight. Wind waves 3 feet in the evening then 2 feet or less.
Scattered showers in the evening, then isolated showers after
midnight.
.WEDNESDAY...North winds 20 knots. Wind waves 2 feet or less.
.WEDNESDAY NIGHT...North winds to 25 knots. Wind waves 2 feet or
less.
.THURSDAY...North winds to 25 knots. Wind waves 2 feet or less.
Isolated showers.
.THURSDAY NIGHT...North winds to 25 knots. Wind waves 2 feet or
less. Isolated showers.
.FRIDAY...North winds to 25 knots. Wind waves 4 to 6 feet.
Isolated showers.
.SATURDAY...North winds to 25 knots. Wind waves 6 to 7 feet.

$$

PHZ120-200815-
Pailolo Channel-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Northeast winds 20 knots. Wind waves 8 feet.
Northwest swell 9 feet. Isolated showers and thunderstorms.
.TONIGHT...East winds 15 knots. Wind waves 5 feet. Northwest
swell 8 feet. Isolated thunderstorms in the evening. Scattered
showers through the night.
.WEDNESDAY...East winds 20 knots. Wind waves 4 feet. Northwest
swell 7 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds to 25 knots. Wind waves 5 feet.
North swell 6 feet. Scattered showers.
.THURSDAY...East winds to 25 knots. Wind waves 5 feet. North
swell 5 feet. Isolated showers.
.THURSDAY NIGHT...East winds to 25 knots. Wind waves 5 feet.
North swell 4 feet. Isolated showers.
.FRIDAY...East winds to 25 knots. Wind waves 8 to 10 feet.
Northwest swell 3 to 5 feet. Isolated showers.
.SATURDAY...East winds to 25 knots. Wind waves 12 to 13 feet.
Northwest swell 5 to 6 feet. Isolated showers.

$$

PHZ121-200815-
Alenuihaha Channel-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...East winds 20 knots. Wind waves 8 feet.
Northwest swell 11 feet. Scattered showers and isolated
thunderstorms.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 9 feet. Scattered showers.
.WEDNESDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 8 feet. Isolated showers.
.WEDNESDAY NIGHT...East winds to 25 knots. Wind waves 6 feet.
North swell 7 feet. Isolated showers.
.THURSDAY...East winds to 25 knots. Wind waves 5 feet. North
swell 6 feet. Isolated showers.
.THURSDAY NIGHT...East winds to 25 knots. Wind waves 7 feet.
Northwest swell 5 feet. Scattered showers.
.FRIDAY...East winds to 25 knots. Wind waves 9 to 11 feet.
Northwest swell 5 to 7 feet. Isolated showers.
.SATURDAY...East winds to 25 knots. Wind waves 11 to 12 feet.
Northwest swell 8 to 10 feet. Isolated showers.

$$

PHZ122-200815-
Big Island Windward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...Southeast winds to 25 knots. Wind waves 6 feet.
Northwest swell 13 feet. Numerous showers and isolated
thunderstorms late in the morning, then scattered showers in the
afternoon.
.TONIGHT...East winds 15 knots. Wind waves 4 feet. Northwest
swell 11 feet decreasing to 9 feet after midnight. Scattered
showers.
.WEDNESDAY...East winds 15 knots. Wind waves 4 feet. North swell
8 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 4 feet. North
swell 7 feet. Scattered showers.
.THURSDAY...East winds 15 knots. Wind waves 4 feet. North swell
6 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 6 feet. North
swell 5 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 7 to 9 feet. Northwest
swell 5 to 7 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 9 to 10 feet.
Northwest swell 9 to 11 feet. Scattered showers.

$$

PHZ123-200815-
Big Island Leeward Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...North winds 10 knots west of the Big Island...
east 20 knots near South Point. Wind waves 8 feet. Northwest
swell 9 feet. Isolated thunderstorms late in the morning.
Scattered showers through the day.
.TONIGHT...West of the Big Island, north winds 10 knots in the
evening becoming variable less than 10 knots. Near South Point,
east winds 20 knots. Wind waves 5 feet. Northwest swell 7 feet.
Scattered showers through the night.
.WEDNESDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 5 feet.
Northwest swell 5 feet. Isolated showers.
.WEDNESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east to 25 knots near South Point. Wind waves
5 feet. Northwest swell 4 feet. Isolated showers.
.THURSDAY...Winds variable less than 10 knots west of the Big
Island...east to 25 knots near South Point. Wind waves 5 feet.
Northwest swell 3 feet. Isolated showers.
.THURSDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 20 knots near South Point. Wind waves 6 feet.
Northwest swell 3 feet. Scattered showers.
.FRIDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 7 to 9 feet.
Northwest swell 4 to 6 feet. Isolated showers.
.SATURDAY...West of the Big Island, winds variable less than
10 knots becoming northwest 10 knots in the afternoon and
evening, then becoming variable less than 10 knots after
midnight. Near South Point, east winds to 25 knots. Wind waves
10 to 11 feet. Northwest swell 6 to 8 feet. Isolated showers.

$$

PHZ124-200815-
Big Island Southeast Waters-
949 AM HST Tue Jan 19 2021

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON...

.REST OF TODAY...East winds 15 knots. Wind waves 8 feet.
Northwest swell 9 feet. Scattered showers.
.TONIGHT...East winds 20 knots. Wind waves 6 feet. Northwest
swell 7 feet. Scattered showers.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. Northwest
swell 6 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 5 feet.
Northwest swell 6 feet. Scattered showers.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. Northwest
swell 5 feet. Scattered showers.
.THURSDAY NIGHT...East winds 20 knots. Wind waves 5 feet.
Northwest swell 4 feet. Scattered showers.
.FRIDAY...East winds 20 knots. Wind waves 6 to 8 feet. Northwest
swell 4 to 6 feet. Scattered showers.
.SATURDAY...East winds to 25 knots. Wind waves 10 feet. Northwest
swell 6 to 8 feet. Scattered showers.

$$

Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office



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