4-6 foot
2-4 foot
0-2 foot
4-7 foot

A northwest swell will continue to lower gradually through Saturday evening. However, a moderate sized northwest swell is expected to fill in overnight Saturday into Sunday. A slightly larger reinforcing northwest swell is expected on Monday with a second reinforcement expected Tuesday into Wednesday.

Winds and seas have begun to drop across the western portion of the main Hawaiian islands, allowing for cancellation of the Small Craft Advisory for waters west of Oahu. The SCA remains in effect for remaining waters through this afternoon. Winds and seas will continue to decrease into early next week.

Hawaii Wave Height Model

Tide Predictions

A single tide at Kahului will be foot at

tide at Kahului was foot at just after midnight, of foot at just after midnight, then of foot at just after midnight, before once again of foot at just after midnight

The sunrise was at 06:56 am this morning and will set at 06:23 pm this evening. The Moon is currently 25 days old, and is in a Waning Crescent phase. The next New Moon will occur at 9:06 PM on Thursday, February 15th.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 6pm August 17th, 2018

Weather Outlook for Saturday, 10th February 2018

Summary

Dry and pleasant conditions will continue through the weekend. Breezy northerly winds will gradually shift out of the northeast and weaken tonight through Sunday as low pressure east of the state drifts into the area as a weak trough. A slight increase in moisture associated with this weak trough may translate to better windward shower coverage tonight through Sunday. Moisture and rain chances will rise early next week as a cold front and upper trough approach and move into the area.

Detailed Discussion

Water vapor loop showed the islands centered between a broad upper low a few hundred miles to the east-northeast and an upper ridge oriented from northeast to southwest a few hundred miles to the west. North-northwest winds aloft and dry middle- to upper-level air between these two upper features were shown over the state, which are translating to more of a suppressed environment. At the surface, breezy northerly winds and dry conditions continue, which should hold through the day today. Dewpoints are forecast to remain in the 50s with precipitable water (PW) values remaining around an inch or less (dry). A combination of the dry air and subsidence aloft will limit rainfall chances over the islands today.

For the Big Island summits, winds have steadily dropped through the overnight hours, but remain around advisory levels as of this discussion time. As a result, a Wind Advisory is now in effect for the summits through noon, which replaces the warning previously in effect. The strong winds will gradually trend down later today through the rest of the weekend as the upper ridge to the west builds eastward over the islands.

Short-term model guidance remains in good agreement tonight through Sunday night and shows the gradient over the islands weakening as low pressure drifts westward into the area as a weak trough. The gusty northerly winds will trend down and become light beginning tonight, potentially giving way to land and sea breeze conditions over some areas Sunday and Sunday night. A slight increase in moisture associated with this trough combined with a light background easterly low-level flow may support better windward shower coverage by Sunday as the airmass continues to modify. Model PWs support this and depict a modest increase with values trending up to around 1.25″. Dewpoints are forecast to climb back into the 60s Sunday.

Despite the increasing forecast uncertainty early next week due to model differences and changes from cycle to cycle over the past couple of days, increasing moisture and rain chances appear likely. The GFS, GFS ensemble mean, and ECMWF all depict a cold front and sharp upper height falls associated with an upper trough moving into the area Monday through midweek. Cold temperatures aloft along with increasing moisture may translate to increasing chances for a wintery mix on the summits by midweek as well. Additional fine tuning of the forecast will be likely over the weekend as confidence steadily rises and better agreement is shown between the various model solutions.

Central Valley (Kahului, Spreckelsville):

Partly cloudy with isolated showers. Lows 56 to 61. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Leeward West (Lahaina, Ka`anapali):

Partly cloudy with isolated showers. Lows 57 to 64. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Windward West (Wailuku, Waiehu):

Partly cloudy with isolated showers. Lows 51 to 62. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Partly cloudy with isolated showers. Lows 59 to 64 at the shore to around 46 at 5000 feet. North winds up to 10 mph shifting to the south in the late evening and overnight. Chance of rain 20 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Mostly clear. Lows around 60 at the shore to around 49 upcountry. Northeast winds up to 10 mph early in the evening becoming light.

Haleakala Summit

Mostly clear. Lows around 42 at the visitor center to around 35 at the summit. North winds 10 to 15 mph.

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