599
FZHW50 PHFO 210117
CWFHFO

Coastal Waters Forecast
National Weather Service Honolulu HI
317 PM HST Wed Aug 20 2025

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

PHZ100-211415-
317 PM HST Wed Aug 20 2025

.Synopsis for Hawaiian coastal waters...
High pressure north of the main Hawaiian Islands will keep fresh
to locally strong trade winds blowing across the region into early
next week.

$$

PHZ110-211415-
Kauai Northwest Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Isolated
showers this evening.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Isolated
showers.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet.
Isolated showers.
.FRIDAY...East winds to 15 knots. Seas 4 to 5 feet. Isolated
showers.
.FRIDAY NIGHT...East winds to 15 knots. Seas 4 to 5 feet.
Isolated showers.
.SATURDAY...East winds to 15 knots. Seas to 4 feet. Wave Detail:
East 3 feet at 7 seconds. Isolated showers in the morning.
.SATURDAY NIGHT...East winds to 15 knots. Seas 4 to 5 feet. Wave
Detail: East 3 feet at 8 seconds. Isolated showers.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave
Detail: East 3 feet at 8 seconds. Isolated showers in the
morning. Isolated showers through the day.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave
Detail: East 3 feet at 8 seconds. Isolated showers in the
morning. Isolated showers through the day.

$$

PHZ111-211415-
Kauai Windward Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East winds to 15 knots. Seas 4 to 5 feet. Isolated
showers this evening.
.THURSDAY...East winds to 15 knots. Seas to 5 feet. Wave Detail:
South 3 feet at 14 seconds. Isolated showers.
.THURSDAY NIGHT...East winds to 15 knots. Seas to 5 feet. Wave
Detail: South 3 feet at 13 seconds. Isolated showers.
.FRIDAY...East winds to 15 knots. Seas to 5 feet. Wave Detail:
South 3 feet at 13 seconds. Isolated showers.
.FRIDAY NIGHT...East winds to 15 knots. Seas 4 to 5 feet. Wave
Detail: East southeast 3 feet at 7 seconds and south 3 feet at
12 seconds. Isolated showers.
.SATURDAY...East winds to 15 knots. Seas 4 to 5 feet. Wave
Detail: East southeast 3 feet at 7 seconds and south 3 feet at
12 seconds. Isolated showers in the morning.
.SATURDAY NIGHT...East winds to 15 knots. Seas to 5 feet. Wave
Detail: East southeast 3 feet at 8 seconds. Isolated showers.
.SUNDAY...East southeast winds to 15 knots. Seas to 5 feet. Wave
Detail: East southeast 3 feet at 8 seconds. Isolated showers in
the morning. Isolated showers through the day.
.MONDAY...East winds 10 to 15 knots. Seas to 5 feet. Wave Detail:
East southeast 3 feet at 8 seconds. Isolated showers in the
morning. Isolated showers through the day.

$$

PHZ112-211415-
Kauai Leeward Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East northeast winds 15 to 20 knots. Seas 4 to 6 feet.
Isolated showers after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Wave
Detail: South 3 feet at 14 seconds. Isolated showers in the
afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.
Wave Detail: South 3 feet at 13 seconds. Isolated showers after
midnight.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: South 3 feet at 13 seconds. Isolated showers in the
morning.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: South 3 feet at 13 seconds. Isolated showers.
.SATURDAY...East winds to 15 knots. Seas 4 to 5 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet.
Isolated showers after midnight.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Isolated
showers after midnight.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.

$$

PHZ113-211415-
Kauai Channel-
317 PM HST Wed Aug 20 2025

.TONIGHT...East northeast winds 15 to 20 knots. Seas 5 to 6 feet.
.THURSDAY...East northeast winds 15 to 20 knots. Seas 5 to
6 feet. Wave Detail: South 3 feet at 14 seconds. Isolated
showers.
.THURSDAY NIGHT...East northeast winds 15 to 20 knots. Seas to
5 feet. Wave Detail: South 3 feet at 13 seconds. Isolated
showers.
.FRIDAY...East northeast winds to 15 knots. Seas 4 to 5 feet.
Wave Detail: South 3 feet at 13 seconds. Isolated showers in the
morning.
.FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to
5 feet. Wave Detail: South 3 feet at 13 seconds. Isolated
showers.
.SATURDAY...East northeast winds to 15 knots. Seas 4 to 5 feet.
Wave Detail: South 3 feet at 12 seconds. Isolated showers in the
morning.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet.
Isolated showers after midnight.
.SUNDAY...East winds 10 to 15 knots, rising to 15 to 20 knots in
the afternoon and evening, easing to 10 to 15 knots after
midnight. Seas 4 to 5 feet. Isolated showers in the morning.
Isolated showers after midnight.
.MONDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. Isolated
showers in the morning. Isolated showers after midnight.

$$

PHZ114-211415-
Oahu Windward Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Isolated
showers after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas to 5 feet. Scattered
showers, mainly in the morning.
.THURSDAY NIGHT...East winds to 15 knots. Seas to 5 feet.
Isolated showers.
.FRIDAY...East winds to 15 knots. Seas to 5 feet. Wave Detail:
East southeast 3 feet at 7 seconds. Isolated showers in the
morning.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave
Detail: East southeast 3 feet at 7 seconds. Isolated showers.
.SATURDAY...East winds to 15 knots. Seas 4 to 5 feet. Wave
Detail: East southeast 3 feet at 7 seconds. Isolated showers in
the morning.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet.
Wave Detail: East southeast 3 feet at 8 seconds. Isolated
showers.
.SUNDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. Wave
Detail: East southeast 3 feet at 8 seconds. Isolated showers in
the morning. Isolated showers through the day.
.MONDAY...East winds to 15 knots. Seas to 5 feet. Wave Detail:
East southeast 3 feet at 8 seconds. Isolated showers in the
morning. Isolated showers through the day.

$$

PHZ115-211415-
Oahu Leeward Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East northeast winds 15 to 20 knots. Seas 4 to 5 feet.
Isolated showers after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: South 3 feet at 14 seconds. Isolated showers in the
morning.
.THURSDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to
5 feet. Wave Detail: South 3 feet at 13 seconds.
.FRIDAY...East northeast winds to 15 knots. Seas 4 to 5 feet.
Wave Detail: South 3 feet at 13 seconds.
.FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to
5 feet. Wave Detail: South 3 feet at 13 seconds.
.SATURDAY...East northeast winds 10 to 15 knots. Seas 4 to
5 feet. Wave Detail: South 3 feet at 12 seconds.
.SATURDAY NIGHT...East northeast winds 10 to 15 knots. Seas 3 to
4 feet.
.SUNDAY...East winds 10 to 15 knots, veering to east southeast
7 to 10 knots in the afternoon, backing to east northeast 10 to
15 knots in the evening, becoming 7 to 10 knots after midnight.
Seas 3 to 4 feet.
.MONDAY...East winds 7 to 10 knots, backing to east northeast
10 to 15 knots. Seas 3 to 4 feet.

$$

PHZ116-211415-
Kaiwi Channel-
317 PM HST Wed Aug 20 2025

.TONIGHT...East northeast winds to 20 knots. Seas to 5 feet.
Isolated showers after midnight.
.THURSDAY...East northeast winds 15 to 20 knots. Seas to 5 feet.
Wave Detail: South 3 feet at 14 seconds. Scattered showers in the
morning.
.THURSDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to
5 feet. Wave Detail: South 3 feet at 13 seconds. Isolated showers
after midnight.
.FRIDAY...East northeast winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: South 3 feet at 13 seconds. Isolated showers in the
morning.
.FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 4 to
5 feet. Wave Detail: South 3 feet at 13 seconds. Isolated
showers.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: East 3 feet at 7 seconds and south 3 feet at 12 seconds.
Isolated showers in the morning.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.
Wave Detail: East 3 feet at 8 seconds. Isolated showers after
midnight.
.SUNDAY...East winds 15 to 20 knots, easing to 10 to 15 knots
after midnight. Seas 4 to 6 feet. Wave Detail: East 3 feet at
8 seconds. Isolated showers in the morning. Isolated showers
after midnight.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave
Detail: East 3 feet at 8 seconds. Isolated showers in the
morning. Isolated showers after midnight.

$$

PHZ117-211415-
Maui County Windward Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East winds 15 to 20 knots. Seas to 5 feet. Isolated
showers this evening, then scattered showers after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas to 5 feet. Scattered
showers in the morning.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet.
Isolated showers.
.FRIDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave Detail:
East southeast 3 feet at 7 seconds. Isolated showers.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas to 5 feet. Wave
Detail: East southeast 3 feet at 7 seconds. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas to 5 feet. Wave
Detail: East southeast 3 feet at 7 seconds. Isolated showers in
the morning.
.SATURDAY NIGHT...East southeast winds to 20 knots. Seas 5 to
6 feet. Wave Detail: East southeast 4 feet at 8 seconds. Isolated
showers.
.SUNDAY...East southeast winds 15 to 20 knots. Seas 5 to 6 feet.
Wave Detail: East southeast 3 feet at 8 seconds. Isolated showers
in the morning. Isolated showers through the day.
.MONDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. Wave
Detail: East southeast 3 feet at 8 seconds. Isolated showers in
the morning. Isolated showers through the day.

$$

PHZ118-211415-
Maui County Leeward Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East northeast winds 15 to 20 knots. Seas 4 to 6 feet.
Isolated showers after midnight.
.THURSDAY...East winds 10 to 15 knots, rising to 15 to 20 knots
in the afternoon. Seas 3 to 5 feet. Wave Detail: South 3 feet at
14 seconds. Isolated showers in the morning.
.THURSDAY NIGHT...East northeast winds 10 to 15 knots. Seas 3 to
5 feet. Wave Detail: South 3 feet at 13 seconds.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 13 seconds.
.FRIDAY NIGHT...East northeast winds 15 to 20 knots. Seas 3 to
5 feet. Wave Detail: South 3 feet at 13 seconds.
.SATURDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 12 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming east
northeast 15 to 20 knots after midnight. Seas 3 to 5 feet.
.SUNDAY...East winds 15 to 20 knots, easing to 10 to 15 knots.
Seas 3 to 5 feet.
.MONDAY...East northeast winds 10 to 15 knots. Seas 3 to 4 feet.

$$

PHZ119-211415-
Maalaea Bay-
317 PM HST Wed Aug 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.TONIGHT...North winds to 25 knots. Seas to 2 feet or less.
.THURSDAY...North winds to 25 knots. Seas to 2 feet or less.
.THURSDAY NIGHT...North winds to 25 knots. Seas to 2 feet or
less.
.FRIDAY...North winds 20 to 25 knots. Seas to 2 feet or less.
.FRIDAY NIGHT...North winds to 25 knots, easing to 20 knots after
midnight. Seas to 2 feet or less.
.SATURDAY...North winds 20 to 25 knots. Seas to 2 feet or less.
.SATURDAY NIGHT...North winds 20 to 25 knots. Seas to 2 feet or
less.
.SUNDAY...North winds 20 to 25 knots, easing to 10 knots after
midnight. Seas to 2 feet or less.
.MONDAY...North winds 15 to 20 knots. Seas to 2 feet or less.

$$

PHZ120-211415-
Pailolo Channel-
317 PM HST Wed Aug 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.TONIGHT...East northeast winds 20 to 25 knots. Seas 3 to 5 feet.
Isolated showers this evening. Scattered showers after midnight.
.THURSDAY...East northeast winds 20 to 25 knots. Seas 3 to
5 feet. Scattered showers in the morning.
.THURSDAY NIGHT...East northeast winds 20 to 25 knots. Seas 3 to
5 feet. Isolated showers.
.FRIDAY...East northeast winds 20 to 25 knots. Seas 3 to 4 feet.
Isolated showers in the morning.
.FRIDAY NIGHT...East northeast winds 20 to 25 knots. Seas 3 to
4 feet. Isolated showers.
.SATURDAY...East northeast winds 20 to 25 knots. Seas 3 to
5 feet.
.SATURDAY NIGHT...East northeast winds 20 to 25 knots. Seas 3 to
5 feet. Isolated showers after midnight.
.SUNDAY...East northeast winds 20 to 25 knots, easing to 15 to
20 knots after midnight. Seas 3 to 5 feet. Isolated showers after
midnight.
.MONDAY...East northeast winds 15 to 20 knots. Seas 3 to 4 feet.
Isolated showers after midnight.

$$

PHZ121-211415-
Alenuihaha Channel-
317 PM HST Wed Aug 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.TONIGHT...East northeast winds 20 to 25 knots. Seas 5 to 7 feet.
Scattered showers this evening. Isolated showers after midnight.
.THURSDAY...East northeast winds 20 to 25 knots. Seas 5 to
7 feet. Wave Detail: South 3 feet at 14 seconds. Isolated showers
in the morning.
.THURSDAY NIGHT...East northeast winds 20 to 25 knots. Seas 4 to
6 feet. Wave Detail: South 3 feet at 13 seconds. Isolated
showers.
.FRIDAY...East northeast winds 20 to 25 knots. Seas 4 to 6 feet.
Wave Detail: South 3 feet at 13 seconds. Isolated showers in the
morning.
.FRIDAY NIGHT...East northeast winds 20 to 25 knots. Seas 4 to
6 feet. Wave Detail: East 3 feet at 7 seconds and south 3 feet at
13 seconds. Isolated showers.
.SATURDAY...East northeast winds 20 to 25 knots. Seas 4 to
6 feet. Wave Detail: East 3 feet at 8 seconds and south 3 feet at
12 seconds. Isolated showers in the morning.
.SATURDAY NIGHT...East northeast winds 20 to 25 knots. Seas 4 to
6 feet. Wave Detail: East 3 feet at 8 seconds. Isolated showers
after midnight.
.SUNDAY...East northeast winds 20 to 25 knots, easing to 15 to
20 knots after midnight. Seas 4 to 6 feet. Wave Detail: East
3 feet at 8 seconds. Isolated showers in the morning. Isolated
showers after midnight.
.MONDAY...East northeast winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: East 3 feet at 8 seconds. Isolated showers in the
morning. Isolated showers after midnight.

$$

PHZ122-211415-
Big Island Windward Waters-
317 PM HST Wed Aug 20 2025

.TONIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet. Scattered
showers.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: East 3 feet at 7 seconds and south 3 feet at 14 seconds.
Isolated showers.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: East southeast 3 feet at 7 seconds and south 3 feet
at 13 seconds. Isolated showers.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: East southeast 3 feet at 7 seconds and south 3 feet at
13 seconds. Isolated showers.
.FRIDAY NIGHT...East winds to 15 knots. Seas 5 to 6 feet. Wave
Detail: East southeast 3 feet at 7 seconds and south 3 feet at
12 seconds. Isolated showers.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. Wave
Detail: East southeast 4 feet at 7 seconds and south 3 feet at
12 seconds. Isolated showers in the morning.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet.
Wave Detail: East southeast 4 feet at 8 seconds and south 3 feet
at 12 seconds. Isolated showers.
.SUNDAY...East winds 15 to 20 knots, easing to 10 to 15 knots
after midnight. Seas 5 to 6 feet. Wave Detail: East southeast
4 feet at 8 seconds. Isolated showers in the morning. Isolated
showers through the day.
.MONDAY...East winds 10 to 15 knots. Seas to 5 feet. Wave Detail:
East southeast 3 feet at 8 seconds. Isolated showers in the
morning. Isolated showers through the day.

$$

PHZ123-211415-
Big Island Leeward Waters-
317 PM HST Wed Aug 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.TONIGHT...West of the Big Island, southwest winds 7 to 10 knots,
veering to north northwest after midnight. Near South Point, east
winds to 25 knots. Seas 4 to 6 feet. Isolated showers after
midnight.
.THURSDAY...West of the Big Island, west northwest winds 7 to
10 knots. Near South Point, east winds 20 to 25 knots, becoming
to 25 knots in the afternoon. Seas 4 to 6 feet. Wave Detail:
South 3 feet at 14 seconds. Isolated showers in the morning.
.THURSDAY NIGHT...West of the Big Island, winds variable less
than 10 knots. Near South Point, east winds 20 to 25 knots,
backing to east northeast after midnight. Seas 4 to 6 feet. Wave
Detail: South 3 feet at 13 seconds.
.FRIDAY...Winds variable less than 10 knots west of the Big
Island...East 20 to 25 knots near South Point. Seas 4 to 6 feet.
Wave Detail: South 3 feet at 13 seconds.
.FRIDAY NIGHT...Winds variable less than 10 knots west of the Big
Island...East northeast 20 to 25 knots near South Point. Seas
4 to 6 feet. Wave Detail: South 3 feet at 13 seconds.
.SATURDAY...Winds variable less than 10 knots west of the Big
Island...East 20 to 25 knots near South Point. Seas 3 to 5 feet.
Wave Detail: South 3 feet at 12 seconds.
.SATURDAY NIGHT...West of the Big Island, winds variable less
than 10 knots. Near South Point, east winds 20 to 25 knots,
backing to east northeast after midnight. Seas 3 to 5 feet. Wave
Detail: South 3 feet at 12 seconds. Isolated showers.
.SUNDAY...West of the Big Island, winds variable less than
10 knots. Near South Point, east northeast winds 20 to 25 knots,
veering to east in the afternoon and evening, then becoming east
northeast 15 to 20 knots after midnight. Seas 3 to 5 feet.
Isolated showers in the morning. Isolated showers after midnight.
.MONDAY...Winds variable less than 10 knots west of the Big
Island...East 15 to 20 knots near South Point. Seas 3 to 5 feet.

$$

PHZ124-211415-
Big Island Southeast Waters-
317 PM HST Wed Aug 20 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON...

.TONIGHT...East northeast winds 20 to 25 knots. Seas 5 to 6 feet.
Isolated showers this evening, then scattered showers after
midnight.
.THURSDAY...East northeast winds 20 to 25 knots. Seas 5 to
6 feet. Wave Detail: East 3 feet at 7 seconds and south 3 feet at
14 seconds. Isolated showers in the morning.
.THURSDAY NIGHT...East northeast winds 20 to 25 knots. Seas 5 to
6 feet. Wave Detail: East southeast 3 feet at 7 seconds and south
3 feet at 13 seconds. Isolated showers.
.FRIDAY...East northeast winds 20 to 25 knots. Seas 5 to 6 feet.
Wave Detail: East southeast 3 feet at 7 seconds and south 3 feet
at 13 seconds. Isolated showers.
.FRIDAY NIGHT...East northeast winds 20 to 25 knots. Seas 6 to
7 feet. Wave Detail: East southeast 3 feet at 7 seconds and south
3 feet at 13 seconds. Isolated showers.
.SATURDAY...East northeast winds 20 to 25 knots. Seas 6 to
7 feet. Wave Detail: East southeast 4 feet at 8 seconds and south
3 feet at 12 seconds. Isolated showers in the morning.
.SATURDAY NIGHT...East northeast winds 20 to 25 knots. Seas 6 to
7 feet. Wave Detail: East southeast 4 feet at 8 seconds and south
3 feet at 12 seconds. Isolated showers.
.SUNDAY...East northeast winds 20 to 25 knots. Seas 6 to 7 feet.
Wave Detail: East southeast 4 feet at 8 seconds. Isolated showers
in the morning. Isolated showers through the day.
.MONDAY...East northeast winds 15 to 20 knots. Seas 6 to 7 feet.
Wave Detail: East southeast 3 feet at 8 seconds. Isolated showers
in the morning. Isolated showers through the day.

$$