fzhw50 phfo 201639
cwfhfo
expires:202604210515;;698747

coastal waters forecast
national weather service honolulu hi
639 am hst mon apr 20 2026

hawaiian coastal waters within 40 nautical miles including the
hawaiian islands humpback whale national marine sanctuary.


phz113-210515-
kauai channel-
639 am hst mon apr 20 2026

.rest of today...east winds 10 to 15 knots. seas 3 to 4 feet.
wave detail: east southeast 3 feet at 6 seconds. scattered
showers with isolated thunderstorms this morning, then isolated
showers this afternoon. 
.tonight...east winds 7 to 10 knots. seas 3 to 4 feet. wave
detail: east southeast 3 feet at 5 seconds and north northeast
3 feet at 8 seconds. isolated showers. 
.tuesday...east northeast winds 7 to 10 knots. seas 4 to 5 feet.
wave detail: east southeast 3 feet at 5 seconds and north
northeast 3 feet at 8 seconds. 
.tuesday night...northeast winds 7 to 10 knots. seas 4 to 5 feet.
wave detail: north northeast 4 feet at 15 seconds and northwest
3 feet at 14 seconds. 
.wednesday...northeast winds 10 to 15 knots. seas to 5 feet. wave
detail: north northeast 4 feet at 14 seconds and north northwest
3 feet at 13 seconds. 
.wednesday night...northeast winds to 15 knots. seas to 5 feet.
wave detail: north northeast 4 feet at 12 seconds and northwest
3 feet at 12 seconds. 
.thursday...northeast winds to 15 knots, rising to 20 knots. seas
4 to 5 feet. wave detail: north northeast 4 feet at 11 seconds
and east northeast 3 feet at 4 seconds. 
.friday...northeast winds 15 to 20 knots. seas 4 to 6 feet. wave
detail: east northeast 4 feet at 5 seconds, northeast 3 feet at
9 seconds and northwest 3 feet at 12 seconds.  

winds and seas higher in and near tstms.

$$

fzhw50 phfo 201639
cwfhfo
expires:202604210515;;698748

coastal waters forecast
national weather service honolulu hi
639 am hst mon apr 20 2026

hawaiian coastal waters within 40 nautical miles including the
hawaiian islands humpback whale national marine sanctuary.


phz114-210515-
oahu windward waters-
639 am hst mon apr 20 2026

.rest of today...east winds 10 to 15 knots. seas 4 to 5 feet.
wave detail: east southeast 4 feet at 6 seconds. scattered heavy
showers with isolated thunderstorms this morning, then isolated
showers this afternoon. 
.tonight...east southeast winds 10 to 15 knots. seas 4 to 5 feet.
wave detail: east northeast 3 feet at 7 seconds. scattered
showers, mainly in the evening. 
.tuesday...east southeast winds 7 to 10 knots. seas to 5 feet.
wave detail: east southeast 3 feet at 7 seconds, north northeast
3 feet at 8 seconds and northwest 3 feet at 13 seconds. 
.tuesday night...east northeast winds 7 to 10 knots. seas 5 to
6 feet. wave detail: north northeast 4 feet at 16 seconds, east
southeast 3 feet at 7 seconds and northwest 3 feet at 12 seconds.
.wednesday...east northeast winds to 10 knots. seas 5 to 6 feet.
wave detail: north northwest 4 feet at 13 seconds and north
northeast 4 feet at 13 seconds. 
.wednesday night...east northeast winds 10 to 15 knots. seas 5 to
6 feet. wave detail: north northwest 4 feet at 12 seconds and
north northeast 4 feet at 12 seconds. 
.thursday...east northeast winds to 15 knots. seas 5 to 6 feet.
wave detail: north northeast 4 feet at 11 seconds, east southeast
3 feet at 7 seconds and northwest 3 feet at 15 seconds. 
.friday...east northeast winds to 15 knots, becoming 15 to
20 knots. seas 4 to 6 feet. wave detail: east 4 feet at
6 seconds, north northwest 4 feet at 12 seconds and northeast
3 feet at 9 seconds. isolated showers after midnight.  

winds and seas higher in and near tstms.

$$

fzhw50 phfo 201639
cwfhfo
expires:202604210515;;698749

coastal waters forecast
national weather service honolulu hi
639 am hst mon apr 20 2026

hawaiian coastal waters within 40 nautical miles including the
hawaiian islands humpback whale national marine sanctuary.


phz115-210515-
oahu leeward waters-
639 am hst mon apr 20 2026

.rest of today...east winds 10 to 15 knots. seas 3 to 4 feet.
wave detail: east southeast 3 feet at 6 seconds. scattered
showers with isolated thunderstorms this morning, then isolated
showers this afternoon. 
.tonight...east winds 7 to 10 knots. seas 3 to 4 feet. wave
detail: east southeast 3 feet at 5 seconds. isolated showers. 
.tuesday...east northeast winds 7 to 10 knots. seas 3 to 4 feet. 
.tuesday night...northeast winds 7 to 10 knots. seas 3 to 4 feet.
wave detail: northwest 3 feet at 14 seconds. 
.wednesday...northeast winds 10 to 15 knots. seas 3 to 4 feet.
wave detail: north northwest 3 feet at 14 seconds. 
.wednesday night...northeast winds 10 to 15 knots. seas 3 to
5 feet. wave detail: northwest 3 feet at 12 seconds. 
.thursday...northeast winds 10 to 15 knots, rising to 15 to
20 knots. seas 3 to 5 feet. wave detail: east 3 feet at 5 seconds
and west northwest 3 feet at 15 seconds. 
.friday...northeast winds 15 to 20 knots. seas 3 to 5 feet. wave
detail: east 4 feet at 5 seconds and northwest 3 feet at
12 seconds.  

winds and seas higher in and near tstms.

$$

fzhw50 phfo 201639
cwfhfo
expires:202604210515;;698750

coastal waters forecast
national weather service honolulu hi
639 am hst mon apr 20 2026

hawaiian coastal waters within 40 nautical miles including the
hawaiian islands humpback whale national marine sanctuary.


phz116-210515-
kaiwi channel-
639 am hst mon apr 20 2026

.rest of today...east northeast winds 10 to 15 knots. seas 4 to
5 feet. wave detail: east southeast 4 feet at 5 seconds.
scattered showers, mainly this morning. 
.tonight...east winds 10 to 15 knots. seas 4 to 5 feet. wave
detail: east southeast 3 feet at 5 seconds and north northeast
3 feet at 8 seconds. isolated showers. 
.tuesday...east northeast winds 7 to 10 knots. seas 3 to 5 feet.
wave detail: east southeast 3 feet at 5 seconds and north
northeast 3 feet at 8 seconds. 
.tuesday night...northeast winds to 10 knots. seas 4 to 6 feet.
wave detail: north northeast 4 feet at 15 seconds, east southeast
3 feet at 4 seconds and northwest 3 feet at 14 seconds. 
.wednesday...northeast winds 10 to 15 knots. seas 4 to 5 feet.
wave detail: north northeast 4 feet at 13 seconds and northwest
3 feet at 14 seconds. 
.wednesday night...northeast winds to 15 knots. seas 4 to 5 feet.
wave detail: north northeast 4 feet at 12 seconds and northwest
3 feet at 12 seconds. 
.thursday...northeast winds 15 to 20 knots. seas 4 to 6 feet.
wave detail: north northeast 4 feet at 10 seconds, east northeast
3 feet at 4 seconds and northwest 3 feet at 13 seconds. 
.friday...northeast winds 15 to 20 knots. seas 4 to 5 feet. wave
detail: east northeast 4 feet at 5 seconds, north northeast
3 feet at 9 seconds and northwest 3 feet at 12 seconds.  

$$