Page Links Change Location One Page Printer Page HELP AIS Default setup SAVE setting RECALL saved setting

Marine Weather and Tides Kahului, HI Version 3.4

What's New / NOTES 10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

---

Sunrise 5:45AM

Sunset 6:59PM

Sunday May 19, 2019 1:19 AM HST (11:19 UTC)

Moonrise 8:08PM

Moonset 6:37AM

Illumination 100%

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.

---

---

7 Day Forecast for Marine Location Near Kahului, HI

   Hourly   EDIT   Help

---

Area Discussion for -

      (on/off)   Help   NOTE: mouseover dotted underlined text for definition

Fxhw60 phfo 190621 afdhfo area forecast discussion national weather service honolulu hi 821 pm hst Sat may 18 2019 Synopsis A high pressure system northeast of the hawaiian islands will keep trade winds in the forecast with scattered overnight and early morning showers through Sunday. A cold front approaching from the northwest will break down the ridge north of the islands as trade winds transition to light and variable from Monday into Tuesday. A light easterly background wind flow will allow land and sea breezes to develop over leeward areas of each island from Tuesday through Friday. Clouds and isolated to scattered showers during this period will favor windward mountain and interior sections of each island in the afternoon and early evening hours. Discussion A broad high pressure ridge 500 miles north of the islands will keep moderate trade winds in the forecast through Sunday night with scattered showers favoring windward and mountain areas in the overnight and early morning hours. On Monday the large scale weather pattern changes as a cold front approaches the islands from the northwest breaking down the ridge. Decreasing surface pressure gradients over the islands on Monday will cause surface winds to weaken and veer towards the east southeast. Two upper level disturbances passing over kauai may produce elevated showers from kauai to oahu on Monday and Tuesday. These lighter wind speeds will continue through the work week with a light easterly wind flow interacting with land and sea breezes forming along leeward slopes of each island. Weather conditions will feel hot and humid next week due to the light wind pattern and high Sun angle this time of year. Most islands will see clouds building over island interior sections with isolated to scattered showers trending towards the afternoon and early evening hours. Scatterd showers will develop along sea breeze and light trade wind convergence zones. Wind directions near these leeward convergence zones will become more erratic and variable in the afternoon hours as light background winds fight with sea breezes for dominance. Extended outlook weather model solutions suggest we may return to moderate trade winds by next weekend. However, this far out in the forecast cycle our confidence remains only fair that these trade wind speeds will be strong enough to overcome an established land and sea breeze cycle along leeward slopes. Much will depend upon the strength of the high pressure ridge north of the islands. Aviation The locally strong low-level trade wind flow will persist through

Sunday afternoon. Low clouds and showers transported by the trades will continue to affect windward facing slopes through Sunday. Expect brief periods of MVFR conditions to occur over north through east facing sections due to lower ceilings and reduced visibilities, especially from late tonight through Sunday morning. Otherwise, expectVFR conditions to prevail. No airmets are currently in effect. We will monitor satellite imagery overnight in case airmet sierra might be required for mountain obscuration over some windward areas. In addition, based on the vad wind profiles across the state, we do not see a need for airmet tango for low-level mechanical turbulence leeward of the higher terrain. Marine High pressure northeast of the state will maintain moderate to locally strong trade winds through the weekend. As a result, a small craft advisory (sca) remains in effect for the typically windy waters around maui and the big island through 6 am Monday. The winds will ease and shift around to the east-southeast early next week as the high moves northeast and a cold front approaches from the northwest. The front will then stall northwest of the area during the middle and latter part of next week, while high pressure strengthens northeast of the island chain. This will bring a slight increase in the east to east-southeasterly winds Tuesday night through Friday. A series of small southwest and south swells will produce small to moderate surf along south facing shores through the middle of next week. A low pressure system currently developing southeast of new zealand is expected to strengthen tonight into Sunday and will likely produce a long-period south-southwest swell for next weekend. If this storm materializes as expected, surf may approach the high surf advisory criteria memorial day weekend. A small northwest swell will fill in tonight, peak on Sunday, then gradually lower into early next week. Another small to moderate sized northwest swell is possible late next week into next weekend. Small, choppy surf along east facing shores may get a slight boost on Sunday due to the stronger trade winds. Another increase around mid-week is possible due to a developing fetch of moderate trades east of the islands. Hfo watches warnings advisories Small craft advisory until 6 am hst Monday for maalaea bay- pailolo channel-alenuihaha channel-big island leeward waters-big island southeast waters. Discussion... Bohlin aviation... Houston marine... Jelsema

---

Weather Reporting Stations

   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
KLIH1 - 1615680 - Kahului Bay, Maui, HI	0 mi	49 min	ENE 5.1 G 11				1018.3 hPa
51205	8 mi	49 min			78°F	5 ft
51213	30 mi	49 min			79°F	4 ft
51202 - Mokapu Point, HI (098)	73 mi	49 min			78°F	5 ft

Wind History for Kahului, Kahului Harbor, HI

(wind in knots)    EDIT      (on/off)   Help

1 AM

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

Last 24hr

NE12 G16

E4

NE13 G16

NE11 G14

N11

NE13 G18

NE11 G16

NE9

NE12

NE11 G14

N12 G15

N18

NE14 G17

NE16 G21

N17

N15 G19

N16 G20

NE16 G21

NE16 G22

NE17 G21

N14 G17

N15

NE11 G14

NE13 G16

1 day ago

NE14 G19

NE14 G18

NE13 G17

NE10 G15

E1

NE5

N7 G10

N7 G10

N13

N14

N13 G17

N14 G17

N12 G15

N13 G18

N10 G13

NE10 G14

NE17

NE11 G16

NE14 G19

NE11 G14

NE10 G14

N10

N15

NE17 G23

2 days ago

NE14 G18

NE10 G14

NE14 G18

NE10 G16

NE11 G16

N12 G15

N11 G14

N12

N11 G15

N13 G16

N11 G15

N12

NE14 G17

N12 G16

N13

N16

NE7 G11

NE12 G17

NE13 G17

N11

---

Airport Reports

    EDIT      (on/off)   Help   Click EDIT to display multiple airports

Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Kahului, Kahului Airport, HI	2 mi	25 min	N 0	10.00 mi	Fair	73°F	66°F	81%	1018.5 hPa

Wind History from HOG (wind in knots)

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

1 AM

Last 24hr

E8

3

NE10

N9

NE11

NE12

NE11

NE15 G20

NE14 G22

NE18 G23

NE19 G28

NE18 G26

NE19 G27

NE21 G29

NE19 G29

NE24 G30

NE19 G27

NE15 G23

NE16 G26

NE15

NE15

NE8

NE7

Calm

1 day ago

NE14

NE8

NE5

E4

SE4

Calm

NE7

NE14

N14

NE19

NE19

NE20

N19

NE15

NE17 G23

NE19 G23

NE16

NE19

NE11

NE13

NE12

NE8

NE11

NE8

2 days ago

NE14

NE17 G23

NE16 G21

NE11

NE11

NE13

NE15 G20

NE13 G22

NE12 G22

NE18

NE20 G24

NE18

NE19

N16

N13

NE17

NE14

NE12

NE18

NE10

NE11

NE14

N15

NE13

---

Tide / Current Tables for Kahului, Kahului Harbor, Hawaii

   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data

---

Tide / Current Tables for Kihei, Maui (Hawaii) (2)

   EDIT      (on/off)   Help   One Week of Data

---

Weather Map and Satellite Images

       (on/off)   HelpWeather Map

GOES Local Image of Hawaii    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

---

Wind Forecast for (7,2,3,4)

      (on/off)   Help

---

Ground Weather Radar Station Molokai, HI

   (on/off)   Help

---

Disclaimer: The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.