Marine Weather and Tide Forecast for Honaunau-Napoopoo, HI
 | Sunrise 5:59 AM Sunset 6:39 PM Moonrise 6:51 AM Moonset 8:29 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
PHZ123 Big Island Leeward Waters- 339 Pm Hst Sat Apr 18 2026
Tonight - West of the big island, northwest winds 10 to 15 knots, backing to south after midnight. NEar south point, east winds 15 to 20 knots. Seas 3 to 5 feet. Wave detail: east 5 feet at 5 seconds.
Sunday - Northwest winds 7 to 10 knots west of the big island - . East 15 to 20 knots near south point. Seas 3 to 5 feet. Wave detail: east 4 feet at 5 seconds. A slight chance of Thunderstorms in the afternoon.
Sunday night - West of the big island, southwest winds 7 to 10 knots, veering to west northwest after midnight. NEar south point, east winds 15 to 20 knots. Seas 3 to 5 feet. Wave detail: east southeast 4 feet at 5 seconds. A slight chance of showers.
Monday - West of the big island, winds variable less than 10 knots. NEar south point, east northeast winds 10 to 15 knots, veering to east in the afternoon. Seas 3 to 4 feet. Wave detail: east 3 feet at 4 seconds. A slight chance of showers.
Monday night - Winds variable less than 10 knots west of the big island - .east northeast 10 to 15 knots near south point. Seas 3 to 5 feet. Wave detail: east southeast 3 feet at 4 seconds. A slight chance of showers after midnight.
Tuesday - West of the big island, winds variable less than 10 knots. NEar south point, east winds 10 to 15 knots, becoming to 10 knots in the afternoon. Seas 3 to 5 feet. Wave detail: east southeast 3 feet at 4 seconds and north northeast 3 feet at 15 seconds.
Tuesday night - West of the big island, winds variable less than 10 knots. NEar south point, east winds to 10 knots, becoming 10 to 15 knots after midnight. Seas 3 to 4 feet. Wave detail: north northeast 3 feet at 15 seconds.
Wednesday - Winds variable less than 10 knots west of the big island - .east 10 to 15 knots near south point. Seas 3 to 4 feet. Wave detail: north northeast 3 feet at 12 seconds and west northwest 3 feet at 18 seconds.
Thursday - West of the big island, winds variable less than 10 knots. NEar south point, east winds 10 to 15 knots, rising to 15 to 20 knots after midnight. Seas 3 to 5 feet. Wave detail: east northeast 3 feet at 5 seconds and west northwest 3 feet at 16 seconds. Isolated showers through the day.
winds and seas higher in and near tstms.
winds and seas higher in and near tstms.
PHZ100 339 Pm Hst Sat Apr 18 2026
Synopsis for hawaiian coastal waters - A high pressure system far north of the state will slowly drift eastward this weekend. A series of low pressure systems developing northwest of the islands will weaken the ridge over the state, causing weak southeasterly winds to develop over the western hawaii region from Sunday into early next week.
7 Day Forecast for Marine Location Near Honaunau-Napoopoo, HI
NEW! Add second zone forecast
| Napoopoo Click for Map Sun -- 04:26 AM HST 1.12 feet High Tide Sun -- 06:02 AM HST Sunrise Sun -- 07:45 AM HST Moonrise Sun -- 10:42 AM HST -0.40 feet Low Tide Sun -- 06:01 PM HST 2.19 feet High Tide Sun -- 06:42 PM HST Sunset Sun -- 09:38 PM HST Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
Napoopoo, Kealakekua Bay, Hawaii Island, Hawaii, Tide feet
| 12 am |
| 0.4 |
| 1 am |
| 0.5 |
| 2 am |
| 0.7 |
| 3 am |
| 1 |
| 4 am |
| 1.1 |
| 5 am |
| 1.1 |
| 6 am |
| 0.9 |
| 7 am |
| 0.6 |
| 8 am |
| 0.2 |
| 9 am |
| -0.1 |
| 10 am |
| -0.4 |
| 11 am |
| -0.4 |
| 12 pm |
| -0.2 |
| 1 pm |
| 0.2 |
| 2 pm |
| 0.7 |
| 3 pm |
| 1.3 |
| 4 pm |
| 1.7 |
| 5 pm |
| 2.1 |
| 6 pm |
| 2.2 |
| 7 pm |
| 2.1 |
| 8 pm |
| 1.8 |
| 9 pm |
| 1.4 |
| 10 pm |
| 1 |
| 11 pm |
| 0.7 |
| Kailua Kona Click for Map Sun -- 04:16 AM HST 1.12 feet High Tide Sun -- 06:02 AM HST Sunrise Sun -- 07:45 AM HST Moonrise Sun -- 10:32 AM HST -0.40 feet Low Tide Sun -- 05:51 PM HST 2.19 feet High Tide Sun -- 06:43 PM HST Sunset Sun -- 09:39 PM HST Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
Kailua Kona, Hawaii Island, Hawaii, Tide feet
| 12 am |
| 0.4 |
| 1 am |
| 0.5 |
| 2 am |
| 0.8 |
| 3 am |
| 1 |
| 4 am |
| 1.1 |
| 5 am |
| 1.1 |
| 6 am |
| 0.9 |
| 7 am |
| 0.6 |
| 8 am |
| 0.2 |
| 9 am |
| -0.2 |
| 10 am |
| -0.4 |
| 11 am |
| -0.4 |
| 12 pm |
| -0.2 |
| 1 pm |
| 0.3 |
| 2 pm |
| 0.8 |
| 3 pm |
| 1.3 |
| 4 pm |
| 1.8 |
| 5 pm |
| 2.1 |
| 6 pm |
| 2.2 |
| 7 pm |
| 2 |
| 8 pm |
| 1.7 |
| 9 pm |
| 1.3 |
| 10 pm |
| 0.9 |
| 11 pm |
| 0.6 |
FXHW60 PHFO 190657 AFDHFO
Area Forecast Discussion National Weather Service Honolulu HI 857 PM HST Sat Apr 18 2026
SYNOPSIS
Moderate trade winds will weaken and veer out of the east- southeast across the western half of the island chain tonight as low pressure deepens several hundred miles northwest of Kauai.
Shower activity should be low and focused mainly over windward areas as high clouds briefly diminish. An upper-level trough will will bring increased high clouds and renewed chances for isolated heavy showers and thunderstorms Sunday afternoon and Monday.
Light winds favor chances for mainly afternoon showers Tuesday and Wednesday, followed by rebuilding trade winds Thursday and Friday.
SHORT TERM UPDATE
Issued at 856 PM HST Sat Apr 18 2026
No changes made, previous forecast is on track.
AVIATION
Light to moderate easterly trades among some land-sea breezes will remain in place through the weekend under high pressure well north of the Hawaiian Islands with a surface trough lingering to the west. Overall, expect VFR conditions to prevail across most terminals through the period.
No AIRMETs in effect.
MARINE
A high pressure system far north of the state will slowly drift eastward this weekend. Easterly trade winds diminish tonight as a trough to the northwest of the islands develops into a weak low pressure system by Sunday. The resulting weakness in the ridge causes winds to veer southeasterly and diminish over the western Hawaii region from Sunday into early next week. Late next week, east to northeasterly trade winds begin to redevelop with weak ridging re-establishing north of the islands.
A small pulse of medium period swell energy from the northwest should produce a slight bump in north facing surf heights tonight into Sunday morning. A small to moderate, medium period northwest swell will move into the region by Monday night and continue through Wednesday. A moderate, medium period northeast swell arrives Tuesday and peaks on Wednesday, bringing moderate surf to north-facing shores, before slowly declining through the end of the week.
A medium-period south swell will continue to fade tonight, allowing surf along south shores to return to background levels by Sunday. A series of overlapping small south swells will move into the region into next week. Surf heights along east-facing shores remain on the smaller side due to weaker trade winds until the arrival of the aforementioned northeast swell on Tuesday. Small background energy from the west will be possible, especially later in the week, from Severe Tropical Storm Sinlaku.
HFO WATCHES/WARNINGS/ADVISORIES
None.
Area Forecast Discussion National Weather Service Honolulu HI 857 PM HST Sat Apr 18 2026
SYNOPSIS
Moderate trade winds will weaken and veer out of the east- southeast across the western half of the island chain tonight as low pressure deepens several hundred miles northwest of Kauai.
Shower activity should be low and focused mainly over windward areas as high clouds briefly diminish. An upper-level trough will will bring increased high clouds and renewed chances for isolated heavy showers and thunderstorms Sunday afternoon and Monday.
Light winds favor chances for mainly afternoon showers Tuesday and Wednesday, followed by rebuilding trade winds Thursday and Friday.
SHORT TERM UPDATE
Issued at 856 PM HST Sat Apr 18 2026
No changes made, previous forecast is on track.
AVIATION
Light to moderate easterly trades among some land-sea breezes will remain in place through the weekend under high pressure well north of the Hawaiian Islands with a surface trough lingering to the west. Overall, expect VFR conditions to prevail across most terminals through the period.
No AIRMETs in effect.
MARINE
A high pressure system far north of the state will slowly drift eastward this weekend. Easterly trade winds diminish tonight as a trough to the northwest of the islands develops into a weak low pressure system by Sunday. The resulting weakness in the ridge causes winds to veer southeasterly and diminish over the western Hawaii region from Sunday into early next week. Late next week, east to northeasterly trade winds begin to redevelop with weak ridging re-establishing north of the islands.
A small pulse of medium period swell energy from the northwest should produce a slight bump in north facing surf heights tonight into Sunday morning. A small to moderate, medium period northwest swell will move into the region by Monday night and continue through Wednesday. A moderate, medium period northeast swell arrives Tuesday and peaks on Wednesday, bringing moderate surf to north-facing shores, before slowly declining through the end of the week.
A medium-period south swell will continue to fade tonight, allowing surf along south shores to return to background levels by Sunday. A series of overlapping small south swells will move into the region into next week. Surf heights along east-facing shores remain on the smaller side due to weaker trade winds until the arrival of the aforementioned northeast swell on Tuesday. Small background energy from the west will be possible, especially later in the week, from Severe Tropical Storm Sinlaku.
HFO WATCHES/WARNINGS/ADVISORIES
None.
Wind History for Kawaihae, HI
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Link to 1 hour of 5 minute data for PHKO
Terminal Aerodrome Forecast (TAF) for PHKO
Wind History Graph: HKO
(wind in knots)
GEOS Local Image of Hawaii
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