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Marine Weather and Tide Forecast for Olowalu, HI

April 23, 2025 7:31 AM HST (17:31 UTC) Change Location
Sunrise 5:59 AM   Sunset 6:48 PM
Moonrise 3:07 AM   Moonset 2:58 PM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
PHZ119 Maalaea Bay- 309 Am Hst Wed Apr 23 2025

Today - South southeast winds 7 to 10 knots, veering to southwest to 10 knots this afternoon. Seas to 2 feet or less. Scattered heavy showers this afternoon.

Tonight - Winds variable less than 10 knots, becoming east 7 to 10 knots after midnight. Seas to 2 feet or less. Scattered showers, mainly in the evening.

Wednesday - Southeast winds 7 to 10 knots. Seas to 2 feet or less. Isolated showers in the morning.

Wednesday night - East winds 7 to 10 knots. Seas to 2 feet or less.

Thursday - East southeast winds to 10 knots. Seas to 2 feet or less.

Thursday night - East winds to 10 knots. Seas to 2 feet or less.

Friday - East winds to 10 knots. Seas to 2 feet or less.

Saturday - East winds 7 to 10 knots. Seas to 2 feet or less.
PHZ100 309 Am Hst Wed Apr 23 2025

Synopsis for hawaiian coastal waters - Gentle to moderate south to southeast winds prevail over the western half of the state through the week while moderate to locally fresh southeast winds persist over the eastern half of the state. Heavy showers and the chance for isolated Thunderstorms hold into Thursday, mainly over the western half of the island chain.

7 Day Forecast for Marine Location Near Olowalu, HI
   
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Tide / Current for Kihei, Maui (Hawaii)
  
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Kihei
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Wed -- 12:27 AM HST     1.97 feet High Tide
Wed -- 03:05 AM HST     Moonrise
Wed -- 06:00 AM HST     Sunrise
Wed -- 06:58 AM HST     -0.04 feet Low Tide
Wed -- 01:24 PM HST     1.49 feet High Tide
Wed -- 02:57 PM HST     Moonset
Wed -- 06:47 PM HST     0.27 feet Low Tide
Wed -- 06:47 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Kihei, Maui (Hawaii) does not exist in database. Press Edit above and select a valid nearby location.

Kihei, Maui (Hawaii), Tide feet
12
am
2
1
am
1.9
2
am
1.7
3
am
1.3
4
am
0.8
5
am
0.4
6
am
0.1
7
am
-0
8
am
0.1
9
am
0.3
10
am
0.6
11
am
1
12
pm
1.3
1
pm
1.5
2
pm
1.5
3
pm
1.2
4
pm
0.9
5
pm
0.6
6
pm
0.3
7
pm
0.3
8
pm
0.4
9
pm
0.7
10
pm
1
11
pm
1.4

Tide / Current for Kihei, Maui (Hawaii) (2)
  
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Kihei
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Wed -- 12:24 AM HST     1.92 feet High Tide
Wed -- 03:05 AM HST     Moonrise
Wed -- 06:00 AM HST     Sunrise
Wed -- 06:59 AM HST     -0.16 feet Low Tide
Wed -- 01:29 PM HST     1.40 feet High Tide
Wed -- 02:57 PM HST     Moonset
Wed -- 06:38 PM HST     0.19 feet Low Tide
Wed -- 06:47 PM HST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Kihei, Maui (Hawaii) (2) does not exist in database. Press Edit above and select a valid nearby location.

Kihei, Maui (Hawaii) (2), Tide feet
12
am
1.9
1
am
1.9
2
am
1.6
3
am
1.2
4
am
0.7
5
am
0.3
6
am
-0
7
am
-0.2
8
am
-0.1
9
am
0.2
10
am
0.6
11
am
0.9
12
pm
1.2
1
pm
1.4
2
pm
1.4
3
pm
1.2
4
pm
0.8
5
pm
0.5
6
pm
0.2
7
pm
0.2
8
pm
0.3
9
pm
0.6
10
pm
1
11
pm
1.4

Area Discussion for Honolulu, HI
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FXHW60 PHFO 231306 AFDHFO

Area Forecast Discussion National Weather Service Honolulu HI Issued by National Weather Service San Diego CA 306 AM HST Wed Apr 23 2025

SYNOPSIS
Low pressure northwest of the islands supports moderate southerly flow, increasing humidity, and periods of heavy showers and thunderstorms mainly over the western end of the state. The greatest potential for flash flooding exists over Kauai.

DISCUSSION

Little overall change to expectations going forward today. The overnight period witnessed thunderstorms approach and pass northwest of Kauai while shower development further east, further away from the better instability and forcing, was underwhelming. The exception was along the land breeze boundary in the lee of Mount Haleakala where rates occasionally touched 1 inch per hour.
However, even in this case the more stable environment precluded greater shower depth and intensity mitigating flooding concerns.

Although no further strengthening of the low is anticipated, it will lose a couple more degrees of latitude today which will allow the eastern periphery of the mid-level cold pool to impinge on Kauai today into tomorrow leading to a relative maximum in instability during that time. However, the coldest air and greatest instability aloft will remain confined well northwest of the area.
Even so, ample moistening of low and mid levels has led to instability on the order of 1500 j/kg and equilibrium levels around 40kft over Kauai, more than sufficient for deep convection capable of producing torrential rainfall. Thus far, it is the lack of a low-level forcing mechanism that has prevented more widespread heavy rain from developing around Kauai. Nonetheless, orographic effects are evident on radar and outflows from upstream convection may prove sufficient to trigger additional downstream convective development. The Flood Watch therefore remains in effect through today.

Light to moderate low-level flow retains a SE component through the second half of the week which may allow showers to acquire a land/sea breeze character. This would favor a transition away from an organized heavy rain threat to one in which afternoon convective flare ups could produce pockets of heavy rain over island interiors from Thursday onward as the resident low peels off to the north and east. Long range guidance suggests moderate trades return for the first half of next week.

AVIATION

Moderate southerlies and increasing upper level support favor increased shower coverage over the western end of the state this morning. The gradual approach of low pressure positioned well NW of Kauai brings potential for a period of moderate to heavy rain today capable of producing widespread MVFR and localized IFR. VFR is forecast to prevail elsewhere, though isolated instances of heavy rainfall will still be capable of producing IFR on a localized basis. Thunderstorms are also possible over and in the vicinity of Kauai.

AIRMET Sierra for mountain obscuration remains in effect for Kauai.



MARINE

Gentle to moderate southerlies continues over the western end of the state with locally fresh SE prevailing over the eastern half.
A low settling several hundred miles northwest of the islands results in a chance of thunderstorms mainly in the vicinity of Kauai through Thursday.

The existing small, medium-period NW swell peaked yesterday afternoon and will subside through today with little in the way of surf for N and W facing shores expected thereafter. A slightly larger long- period NW swell is then expected this weekend, though surf is forecast to remain well below the advisory threshold for N and W facing shores.

A small, long period SSW swell will elevate surf along S facing shores above the summertime average, but still firmly below the advisory threshold as it peaks early this morning and holds through Wednesday. This swell then slowly declines during the rest of the week.

Lack of upstream trades favors near-to-below average surf along E facing shores, though some chop resulting from current SE winds may reach the waters off of E facing shores during the next several days.

HFO WATCHES/WARNINGS/ADVISORIES
Flood Watch through Wednesday afternoon for Niihau-Kauai-




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
KLIH1 - 1615680 - Kahului Bay, Maui, HI 14 mi44 minS 2.9G5.1 78°F29.98
51213 19 mi36 min 78°F5 ft
51205 22 mi36 min 77°F4 ft


Wind History for Kahului, Kahului Harbor, HI
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Airport Reports
   
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
PHOG KAHULUI,HI 15 sm37 minSE 0710 smMostly Cloudy70°F68°F94%29.98
PHNY LANAI,HI 17 sm35 minS 1010 smOvercast70°F66°F88%30.04

Weather Map
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GEOS Local Image of Hawaii  
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Molokai/Honolulu,HI





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