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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

235
FZHW50 PHFO 210737
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
937 PM HST Sun Sep 20 2020

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

PHZ100-212000-
937 PM HST Sun Sep 20 2020

.Synopsis for Hawaiian coastal waters...
Locally strong trade winds will ease off overnight, as the ridge
north of the islands weakens. A new surface high will reinforce
the ridge around mid week, resulting in a boost in the trades to
locally strong. A moderate north swell will fill in on Wednesday
and hold through the second half of the week.


$$

PHZ110-212000-
Kauai Northwest Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 20 knots. Wind waves 5 feet. Mixed
swell north 3 feet and south 3 feet. Scattered showers.
.MONDAY...East winds 15 knots. Wind waves 4 feet. North swell
3 feet. Scattered showers in the morning, then isolated showers
in the afternoon.
.MONDAY NIGHT...East winds 20 knots. Wind waves 5 feet. Isolated
showers through the night.
.TUESDAY...East winds 20 knots. Wind waves 5 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet. Isolated showers after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 5 feet. North swell
4 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 5 feet. Scattered showers after midnight.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. North swell
5 feet. Scattered showers.
.FRIDAY...East winds 10 knots. Wind waves 4 feet. North swell
4 to 5 feet. Scattered showers.

$$

PHZ111-212000-
Kauai Windward Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 15 knots. Wind waves 5 feet. Mixed
swell north 3 feet and south 3 feet. Scattered showers.
.MONDAY...East winds 15 knots. Wind waves 4 feet. North swell
3 feet. Scattered showers in the morning, then isolated showers
in the afternoon.
.MONDAY NIGHT...East winds 15 knots. Wind waves 5 feet. Isolated
showers.
.TUESDAY...East winds 15 knots. Wind waves 4 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 4 feet. North
swell 3 feet. Isolated showers after midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 4 feet. North swell
4 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 5 feet. Scattered showers after midnight.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. North swell
5 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 4 to 5 feet. North
swell 4 to 5 feet. Scattered showers.

$$

PHZ112-212000-
Kauai Leeward Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 20 knots. Wind waves 5 feet. Mixed
swell north 3 feet and south 3 feet. Scattered showers.
.MONDAY...East winds 15 knots. Wind waves 5 feet. North swell
3 feet. Scattered showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 5 feet. Isolated
showers through the night.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 3 feet after midnight. Isolated showers after midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. North swell
4 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 4 feet. Isolated showers after midnight.
.THURSDAY...East winds 20 knots. Wind waves 5 to 6 feet. North
swell 5 feet. Isolated showers.
.FRIDAY...East winds 10 knots. Wind waves 4 to 5 feet. North
swell 4 to 5 feet. Isolated showers.

$$

PHZ113-212000-
Kauai Channel-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...Northeast winds 20 knots. Wind waves 5 feet.
Mixed swell north 3 feet and south 3 feet. Scattered showers.
.MONDAY...East winds 15 knots. Wind waves 5 feet. North swell
3 feet. Scattered showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 5 feet. Isolated
showers after midnight.
.TUESDAY...Northeast winds 20 knots. Wind waves 5 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet after midnight. Isolated showers after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 4 feet. North swell
3 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 4 feet. Isolated showers after midnight.
.THURSDAY...Northeast winds 20 knots. Wind waves 5 to 6 feet.
North swell 5 feet. Isolated showers.
.FRIDAY...East winds 15 knots. Wind waves 4 to 5 feet. North
swell 4 to 5 feet. Isolated showers.

$$

PHZ114-212000-
Oahu Windward Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 15 knots. Wind waves 5 feet. Mixed
swell north 3 feet and south 3 feet. Scattered showers.
.MONDAY...East winds 15 knots. Wind waves 5 feet. North swell
3 feet. Scattered showers in the morning.
.MONDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet in the evening. Isolated showers through the night.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet after midnight. Isolated showers after midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. North swell
4 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 5 feet. Scattered showers after midnight.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. North swell
5 to 6 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 4 to 5 feet. North
swell 5 to 6 feet. Scattered showers.

$$

PHZ115-212000-
Oahu Leeward Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...Northeast winds 20 knots. Wind waves 5 feet.
Mixed swell northwest 3 feet and south 3 feet. Isolated showers.
.MONDAY...East winds 15 knots. Wind waves 5 feet. Northwest swell
3 feet. Isolated showers in the morning.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet.
.TUESDAY...East winds 20 knots. Wind waves 4 feet.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 4 feet. Northwest
swell 3 feet.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 5 feet.
North swell 4 feet.
.THURSDAY...Northeast winds 20 knots. Wind waves 5 to 6 feet.
North swell 5 feet.
.FRIDAY...East winds 10 knots. Wind waves 4 to 5 feet. North
swell 4 to 5 feet.

$$

PHZ116-212000-
Kaiwi Channel-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 20 knots. Wind waves 5 feet. Mixed
swell north 3 feet and south 3 feet. Scattered showers early in
the evening, then isolated showers after midnight.
.MONDAY...East winds 15 knots. Wind waves 5 feet. North swell
3 feet. Isolated showers in the morning.
.MONDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet in the evening. Isolated showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 5 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet after midnight. Isolated showers after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 5 feet. North swell
3 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 5 feet.
North swell 5 feet. Isolated showers after midnight.
.THURSDAY...Northeast winds 20 knots. Wind waves 5 feet. North
swell 5 feet. Isolated showers.
.FRIDAY...East winds 15 knots. Wind waves 4 to 5 feet. North
swell 4 to 5 feet. Isolated showers.

$$

PHZ117-212000-
Maui County Windward Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 20 knots. Wind waves 5 feet. Mixed
swell north 3 feet and south 3 feet. Scattered showers early in
the evening, then isolated showers after midnight.
.MONDAY...East winds 15 knots. Wind waves 5 feet. North swell
3 feet. Isolated showers through the day.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. North
swell 3 feet in the evening. Isolated showers through the night.
.TUESDAY...East winds 15 knots. Wind waves 5 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 5 feet. North
swell 3 feet after midnight. Isolated showers after midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. North swell
3 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 5 feet. Scattered showers after midnight.
.THURSDAY...East winds 20 knots. Wind waves 5 feet. North swell
5 to 6 feet. Scattered showers.
.FRIDAY...East winds 15 knots. Wind waves 4 to 5 feet. North
swell 5 to 6 feet. Scattered showers.

$$

PHZ118-212000-
Maui County Leeward Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 20 knots. Wind waves 5 feet. Swell
south 3 feet. Isolated showers.
.MONDAY...East winds 15 knots. Wind waves 5 feet. Isolated
showers in the morning.
.MONDAY NIGHT...East winds 15 knots. Wind waves 5 feet.
.TUESDAY...East winds 15 knots. Wind waves 4 feet.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 4 feet. Isolated
showers after midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 4 feet. North swell
3 feet in the afternoon. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 15 knots. Wind waves 5 feet.
North swell 4 feet. Isolated showers after midnight.
.THURSDAY...Northeast winds 15 knots. Wind waves 4 to 5 feet.
North swell 4 to 5 feet.
.FRIDAY...East winds 10 knots. Wind waves 4 feet. North swell
4 to 5 feet.

$$

PHZ119-212000-
Maalaea Bay-
937 PM HST Sun Sep 20 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TONIGHT...North winds to 25 knots. Wind waves 3 feet.
.MONDAY...North winds 20 knots. Wind waves 3 feet in the morning
then 2 feet or less.
.MONDAY NIGHT...North winds 20 knots. Wind waves 2 feet or less.
.TUESDAY...North winds 20 knots. Wind waves 2 feet or less.
.TUESDAY NIGHT...North winds 20 knots. Wind waves 2 feet or less.
.WEDNESDAY...North winds 20 knots. Wind waves 2 feet or less.
.WEDNESDAY NIGHT...North winds 20 knots. Wind waves 2 feet or
less.
.THURSDAY...North winds 20 knots. Wind waves 2 feet or less.
.FRIDAY...North winds 15 knots. Wind waves 2 feet or less.

$$

PHZ120-212000-
Pailolo Channel-
937 PM HST Sun Sep 20 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TONIGHT...East winds to 25 knots. Wind waves 5 feet.
Mixed swell north 3 feet and south 3 feet. Isolated showers.
.MONDAY...East winds 20 knots. Wind waves 5 feet. North swell
3 feet. Isolated showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 4 feet. Isolated
showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 4 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 4 feet. Isolated
showers after midnight.
.WEDNESDAY...East winds 20 knots. Wind waves 4 feet. North swell
3 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 5 feet.
Northwest swell 4 feet. Isolated showers after midnight.
.THURSDAY...East winds 20 knots. Wind waves 4 to 5 feet. North
swell 5 feet. Isolated showers.
.FRIDAY...East winds 15 knots. Wind waves 4 feet. North swell
4 to 5 feet. Isolated showers.

$$

PHZ121-212000-
Alenuihaha Channel-
937 PM HST Sun Sep 20 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TONIGHT...East winds to 25 knots. Wind waves 6 feet.
Mixed swell north 3 feet and south 3 feet. Isolated showers.
.MONDAY...East winds 20 knots. Wind waves 6 feet. North swell
3 feet. Isolated showers in the morning.
.MONDAY NIGHT...East winds 20 knots. Wind waves 6 feet. North
swell 3 feet in the evening. Isolated showers after midnight.
.TUESDAY...East winds 20 knots. Wind waves 5 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. Isolated
showers after midnight.
.WEDNESDAY...East winds to 25 knots. Wind waves 6 feet. North
swell 3 feet. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
North swell 4 feet. Isolated showers after midnight.
.THURSDAY...East winds 20 knots. Wind waves 6 feet. North swell
5 to 6 feet. Isolated showers.
.FRIDAY...East winds 15 knots. Wind waves 5 to 6 feet. North
swell 5 to 6 feet. Isolated showers.

$$

PHZ122-212000-
Big Island Windward Waters-
937 PM HST Sun Sep 20 2020

.REST OF TONIGHT...East winds 20 knots. Wind waves 5 feet. Mixed
swell north 3 feet and south 3 feet. Isolated showers.
.MONDAY...East winds 15 knots. Wind waves 4 feet. North swell
3 feet. Isolated showers in the morning.
.MONDAY NIGHT...East winds 15 knots. Wind waves 4 feet. North
swell 3 feet. Isolated showers through the night.
.TUESDAY...East winds 15 knots. Wind waves 4 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...East winds 15 knots. Wind waves 4 feet.
Scattered showers after midnight.
.WEDNESDAY...East winds 15 knots. Wind waves 5 feet. North swell
3 feet. Scattered showers in the morning.
.WEDNESDAY NIGHT...East winds 20 knots. Wind waves 5 feet. North
swell 5 feet. Scattered showers after midnight.
.THURSDAY...East winds 15 knots. Wind waves 5 feet. North swell
5 to 6 feet. Scattered showers.
.FRIDAY...East winds 10 knots. Wind waves 4 to 5 feet. North
swell 5 to 6 feet. Scattered showers.

$$

PHZ123-212000-
Big Island Leeward Waters-
937 PM HST Sun Sep 20 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TONIGHT...Winds variable less than 10 knots west of the
Big Island...east to 25 knots near South Point. Wind waves
8 feet. Swell south 3 feet. Isolated showers after midnight.
.MONDAY...West of the Big Island, winds variable less than
10 knots becoming northwest 10 knots in the afternoon. Near South
Point, east winds 20 knots. Wind waves 7 feet. Isolated showers
in the morning.
.MONDAY NIGHT...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 6 feet.
Isolated showers after midnight.
.TUESDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 6 feet.
Isolated showers in the morning.
.TUESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 20 knots near South Point. Wind waves 6 feet.
Isolated showers after midnight.
.WEDNESDAY...Winds variable less than 10 knots west of the Big
Island...east 20 knots near South Point. Wind waves 6 feet.
Isolated showers in the morning.
.WEDNESDAY NIGHT...Winds variable less than 10 knots west of the
Big Island...east 20 knots near South Point. Wind waves 5 feet.
Isolated showers after midnight.
.THURSDAY...West of the Big Island, northwest winds 10 knots
becoming variable less than 10 knots, then becoming east 10 knots
after midnight. Near South Point, east winds 20 knots. Wind waves
5 to 6 feet. North swell 3 feet. Isolated showers.
.FRIDAY...West of the Big Island, southeast winds 10 knots
becoming variable less than 10 knots. Near South Point, east
winds 15 knots. Wind waves 5 to 7 feet. North swell 3 feet.
Isolated showers.

$$

PHZ124-212000-
Big Island Southeast Waters-
937 PM HST Sun Sep 20 2020

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.REST OF TONIGHT...Northeast winds to 25 knots. Wind waves
7 feet. Mixed swell north 3 feet and south 3 feet. Isolated
showers through the night.
.MONDAY...Northeast winds 20 knots. Wind waves 7 feet. North
swell 3 feet. Isolated showers in the morning.
.MONDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
North swell 3 feet. Isolated showers after midnight.
.TUESDAY...Northeast winds 20 knots. Wind waves 6 feet. Isolated
showers in the morning.
.TUESDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
Isolated showers after midnight.
.WEDNESDAY...Northeast winds 20 knots. Wind waves 5 feet. North
swell 3 feet in the afternoon. Isolated showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 20 knots. Wind waves 6 feet.
North swell 4 feet. Isolated showers after midnight.
.THURSDAY...East winds 20 knots. Wind waves 5 to 6 feet. North
swell 4 to 6 feet. Isolated showers.
.FRIDAY...Northeast winds 15 knots. Wind waves 5 to 7 feet. North
swell 5 to 6 feet. Isolated showers.

$$

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



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