Marine Weather and Tide Forecast for Kaumakani, HI
April 28, 2025 8:22 AM HST (18:22 UTC)
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![]() | Sunrise 6:01 AM Sunset 6:57 PM Moonrise 6:44 AM Moonset 8:37 PM |
PHZ112 Kauai Leeward Waters- 319 Am Hst Mon Apr 28 2025
Today - Winds variable less than 10 knots, becoming northwest 7 to 10 knots this afternoon. Seas 3 to 4 feet. Wave detail: northwest 3 feet at 11 seconds. Hazy. Scattered showers. A slight chance of Thunderstorms this afternoon.
Tonight - North northeast winds 10 to 15 knots, veering to northeast 7 to 10 knots after midnight. Seas 3 to 4 feet. Wave detail: north northwest 3 feet at 11 seconds. Hazy. Scattered showers with a slight chance of Thunderstorms in the evening. Isolated showers after midnight.
Tuesday - North northeast winds 7 to 10 knots. Seas to 3 feet. Hazy. Isolated showers.
Tuesday night - North northeast winds 10 to 15 knots, veering to northeast 7 to 10 knots after midnight. Seas 3 to 4 feet. Hazy. Isolated showers in the evening. Scattered showers after midnight.
Wednesday - East northeast winds 7 to 10 knots. Seas 3 to 5 feet. Wave detail: east 3 feet at 6 seconds and north northwest 3 feet at 19 seconds. Hazy in the morning. Scattered showers, mainly in the morning.
Wednesday night - East winds 10 to 15 knots. Seas 5 to 6 feet. Wave detail: east 5 feet at 6 seconds and north northwest 4 feet at 18 seconds. Isolated showers.
Thursday - East winds 15 to 20 knots. Seas 6 to 8 feet. Wave detail: east 6 feet at 7 seconds and north northwest 5 feet at 15 seconds. Isolated showers.
Friday - East winds 15 to 20 knots. Seas 5 to 7 feet. Wave detail: east 6 feet at 7 seconds and north northwest 4 feet at 11 seconds. Isolated showers.
winds and seas higher in and near tstms.
winds and seas higher in and near tstms.
PHZ100 319 Am Hst Mon Apr 28 2025
Synopsis for hawaiian coastal waters - A trough of low pressure near kauai continues to weaken the high pressure ridge over the eastern hawaiian islands. This diffuse trough may bring some heavier showers and Thunderstorms to the nearby coastal and offshore waters. Light and variable winds will continue into the Tuesday. Trades will build back in from Wednesday onward as a high pressure system builds in north of the hawaii region.
7 Day Forecast for Marine Location Near Kaumakani, HI

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Port Allen Click for Map Mon -- 03:23 AM HST 0.61 feet High Tide Mon -- 06:08 AM HST Sunrise Mon -- 06:44 AM HST Moonrise Mon -- 09:20 AM HST -0.39 feet Low Tide Mon -- 04:31 PM HST 1.93 feet High Tide Mon -- 07:03 PM HST Sunset Mon -- 08:37 PM HST Moonset Tide / Current data from XTide NOT FOR NAVIGATION |   |
Port Allen, Hanapepe Bay, Kauai Island, Hawaii, Tide feet
12 am |
0.1 |
1 am |
0.3 |
2 am |
0.5 |
3 am |
0.6 |
4 am |
0.6 |
5 am |
0.5 |
6 am |
0.2 |
7 am |
-0 |
8 am |
-0.3 |
9 am |
-0.4 |
10 am |
-0.3 |
11 am |
-0.1 |
12 pm |
0.3 |
1 pm |
0.8 |
2 pm |
1.3 |
3 pm |
1.7 |
4 pm |
1.9 |
5 pm |
1.9 |
6 pm |
1.7 |
7 pm |
1.4 |
8 pm |
1 |
9 pm |
0.6 |
10 pm |
0.3 |
11 pm |
0.1 |
Nawiliwili Click for Map Mon -- 03:21 AM HST 0.78 feet High Tide Mon -- 06:07 AM HST Sunrise Mon -- 06:43 AM HST Moonrise Mon -- 09:20 AM HST -0.46 feet Low Tide Mon -- 04:53 PM HST 2.21 feet High Tide Mon -- 07:02 PM HST Sunset Mon -- 08:36 PM HST Moonset Mon -- 11:55 PM HST 0.30 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |   |
Nawiliwili, Hawaii, Tide feet
12 am |
0.4 |
1 am |
0.5 |
2 am |
0.7 |
3 am |
0.8 |
4 am |
0.7 |
5 am |
0.6 |
6 am |
0.3 |
7 am |
-0 |
8 am |
-0.3 |
9 am |
-0.5 |
10 am |
-0.4 |
11 am |
-0.2 |
12 pm |
0.3 |
1 pm |
0.8 |
2 pm |
1.4 |
3 pm |
1.8 |
4 pm |
2.1 |
5 pm |
2.2 |
6 pm |
2.1 |
7 pm |
1.8 |
8 pm |
1.3 |
9 pm |
0.9 |
10 pm |
0.6 |
11 pm |
0.4 |
Area Discussion for Honolulu, HI
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FXHW60 PHFO 281301 AFDHFO
Area Forecast Discussion National Weather Service Honolulu HI 301 AM HST Mon Apr 28 2025
SYNOPSIS
A moist unstable airmass will remain in place during the next few days, with sea breezes allowing for the development of some locally heavy showers and a few thunderstorms each afternoon. The showers will mostly fizzle out at night, with land breezes keeping most shower activity over the coastal waters or near the immediate coast at night. Trade winds are expected to return Wednesday, reaching breezy levels Friday through the weekend.
Showers will favor windward and mauka areas once the trades return, with a few showers reaching leeward areas from time to time.
DISCUSSION
Currently at the surface, a weak diffuse trough of low pressure is located near Kauai, while a 1031 mb high is centered around 1750 miles northeast of Honolulu. Winds remain light across the state, with land breezes present in most areas. Infrared satellite imagery shows partly cloudy conditions across most of the state. Radar imagery shows scattered light showers over east and southeast facing slopes of the Big Island, with a few showers brushing the leeward Big Island coast as well as the windward coast of Oahu. Elsewhere, shower activity remains out over the coastal waters. Main short term focus revolves around the potential for heavy rain and thunderstorms during the next couple days.
The weak trough of low pressure will remain nearly stationary over the smaller islands today through Tuesday. Winds will change little during this time, with land and sea breezes dominant over most of the state. The troughing over the islands will gradually dampen out during the middle and latter part of the week as high pressure builds to the north. This should allow a gradual return and strengthening of the trade winds across the state, with the trades reaching breezy levels Friday through the weekend.
As for the remaining weather details, a land/sea breeze pattern will remain in place during the next couple days, with showers favoring interior and leeward areas during the afternoon and evening hours, and remaining mostly over the coastal waters or areas near the immediate coast at night. The airmass will remain moist and unstable today through Tuesday as a disturbance aloft dives southward over the state. This should continue to bring some locally heavy showers and a few thunderstorms to the island chain, particularly during the afternoon hours. A return to more typical trade wind weather featuring mainly windward and mauka showers appears take hold Wednesday, with this pattern then persisting through next weekend.
Volcanic emissions and light background southeast flow will keep vog in place over most of the state through Tuesday. The returning trades should clear the vog out of the smaller islands by late Wednesday.
AVIATION
A low pressure trough over the islands will allow for an unsettled land and sea breeze pattern to persist across the state today. Sea breezes will develop during the afternoon and lead to showers and a slight chance of thunderstorms over mainly interior regions, followed by clearing with land breezes at night. MVFR/IFR ceilings and visibility can be expected with some of the more robust activity. Otherwise, VFR conditions will prevail.
No AIRMETs are currently in effect.
MARINE
A trough of low pressure near Kauai continues to weaken the high pressure ridge over the eastern Hawaiian Islands. This diffuse trough may bring some heavier showers and thunderstorms to the nearby coastal and offshore waters. This boundary is expected to slowly shift east over the next 24 hours, increasing the potential for showers and thunderstorms over the coastal and offshore waters. Light and variable winds will continue into the Tuesday. Trades will build back in from Wednesday onward as a high pressure system builds in north of the Hawaii Region.
A small long period northwest swell will slowly fade into Tuesday. Surf along north and west facing shores should remain near or below average levels for this time of year. By Thursday, a medium long period north-northwest swell is expected to arrive, producing surf that will likely remain below advisory levels.
Multiple small early season south swells will maintain small background southerly energy through Tuesday. A bump up in south swell energy will arrive on Wednesday, peaking early Thursday, and then slowly fading through the weekend. Weak upstream trade wind flow will keep surf on the small side for east facing shores.
HFO WATCHES/WARNINGS/ADVISORIES
None.
Area Forecast Discussion National Weather Service Honolulu HI 301 AM HST Mon Apr 28 2025
SYNOPSIS
A moist unstable airmass will remain in place during the next few days, with sea breezes allowing for the development of some locally heavy showers and a few thunderstorms each afternoon. The showers will mostly fizzle out at night, with land breezes keeping most shower activity over the coastal waters or near the immediate coast at night. Trade winds are expected to return Wednesday, reaching breezy levels Friday through the weekend.
Showers will favor windward and mauka areas once the trades return, with a few showers reaching leeward areas from time to time.
DISCUSSION
Currently at the surface, a weak diffuse trough of low pressure is located near Kauai, while a 1031 mb high is centered around 1750 miles northeast of Honolulu. Winds remain light across the state, with land breezes present in most areas. Infrared satellite imagery shows partly cloudy conditions across most of the state. Radar imagery shows scattered light showers over east and southeast facing slopes of the Big Island, with a few showers brushing the leeward Big Island coast as well as the windward coast of Oahu. Elsewhere, shower activity remains out over the coastal waters. Main short term focus revolves around the potential for heavy rain and thunderstorms during the next couple days.
The weak trough of low pressure will remain nearly stationary over the smaller islands today through Tuesday. Winds will change little during this time, with land and sea breezes dominant over most of the state. The troughing over the islands will gradually dampen out during the middle and latter part of the week as high pressure builds to the north. This should allow a gradual return and strengthening of the trade winds across the state, with the trades reaching breezy levels Friday through the weekend.
As for the remaining weather details, a land/sea breeze pattern will remain in place during the next couple days, with showers favoring interior and leeward areas during the afternoon and evening hours, and remaining mostly over the coastal waters or areas near the immediate coast at night. The airmass will remain moist and unstable today through Tuesday as a disturbance aloft dives southward over the state. This should continue to bring some locally heavy showers and a few thunderstorms to the island chain, particularly during the afternoon hours. A return to more typical trade wind weather featuring mainly windward and mauka showers appears take hold Wednesday, with this pattern then persisting through next weekend.
Volcanic emissions and light background southeast flow will keep vog in place over most of the state through Tuesday. The returning trades should clear the vog out of the smaller islands by late Wednesday.
AVIATION
A low pressure trough over the islands will allow for an unsettled land and sea breeze pattern to persist across the state today. Sea breezes will develop during the afternoon and lead to showers and a slight chance of thunderstorms over mainly interior regions, followed by clearing with land breezes at night. MVFR/IFR ceilings and visibility can be expected with some of the more robust activity. Otherwise, VFR conditions will prevail.
No AIRMETs are currently in effect.
MARINE
A trough of low pressure near Kauai continues to weaken the high pressure ridge over the eastern Hawaiian Islands. This diffuse trough may bring some heavier showers and thunderstorms to the nearby coastal and offshore waters. This boundary is expected to slowly shift east over the next 24 hours, increasing the potential for showers and thunderstorms over the coastal and offshore waters. Light and variable winds will continue into the Tuesday. Trades will build back in from Wednesday onward as a high pressure system builds in north of the Hawaii Region.
A small long period northwest swell will slowly fade into Tuesday. Surf along north and west facing shores should remain near or below average levels for this time of year. By Thursday, a medium long period north-northwest swell is expected to arrive, producing surf that will likely remain below advisory levels.
Multiple small early season south swells will maintain small background southerly energy through Tuesday. A bump up in south swell energy will arrive on Wednesday, peaking early Thursday, and then slowly fading through the weekend. Weak upstream trade wind flow will keep surf on the small side for east facing shores.
HFO WATCHES/WARNINGS/ADVISORIES
None.
Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
NWWH1 - 1611400 - Nawiliwili, HI | 15 mi | 65 min | W 5.1G | 69°F | 78°F | 30.01 | ||
51208 | 26 mi | 57 min | 74°F | 5 ft |
Wind History for Nawiliwili, HI
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Airport Reports
Link to 1 hour of 5 minute data for PHBK
Terminal Aerodrome Forecast (TAF) for PHBK
Wind History Graph: HBK
(wind in knots)GEOS Local Image of Hawaii
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South,Kauai/Honolulu,HI

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