3-5 foot
2-4 foot
0-2 foot
2-4 foot


Several north and northwest swells will provide small to moderate surf to north facing shores into next week, while trade winds deliver short-period surf of varying (mostly small) sizes to east facing shores. Some slight swell energy from the southern hemisphere is expected to provide small surf to south facing shores, with a larger long-period pulse possible in just under a week from now. Surf along all shores is expected to remain below advisory-level heights through the next week. A low passing well north of the islands will drag an associated front toward Kauai through the weekend, suppressing a surface ridge southward over the islands, with winds veering and weakening. The front will stall north of Kauai early next week and gradually dissipate as a new high builds northwest and north of the islands, leading to increasing trade winds from late Monday into Wednesday.

Hawaii Wave Height Model

Hawaii Swell Period Model
Hawaii Swell Height Model


Tide Predictions

High tide at Kahului was 2.1 foot at 1:05 AM late last night, dropping to a low of 0.1 foot at 7:29 AM this morning, then rising to a high of 1.7 foot at 1:25 PM early this afternoon, before once again dropping to a low of 0.1 foot at 7:19 PM early this evening

The sunrise was at 06:10 am this morning and will set at 06:44 pm this evening. The Moon is currently 12 days old, and is in a Waxing Gibbous phase. The next Full Moon will occur at 6:09 AM on Tuesday, April 11th.

Hawaii Wind Report

Maui Weather

90°/96°
Wind: NE at 24 mph
Sunrise: 6:06 AM
Sunset: 6:50 PM
current observations as of 1pm August 21st, 2017

Weather Outlook for Saturday

A light east-southeasterly background trade wind flow will allow daytime sea breezes and overnight land breezes to develop in many areas through the weekend, with some Vog also expected to spread northward into the smaller islands tonight through Sunday night. Through the weekend, light showers will favor windward areas during the overnight and early morning hours and the interior of the islands during the afternoons and evenings. Trade winds will begin to return on Monday and linger through much of next week, bringing a more typical trade wind weather pattern back to the Aloha state.

Currently at the surface, a 1025 mb high centered around 1300 miles northeast of Honolulu, is driving a light to moderate east- southeasterly trade wind flow across the island chain early this morning. Meanwhile, a cold front 950 miles west-northwest of Kauai, is pushing steadily eastward toward the state. Infrared satellite imagery continues to show quite a bit of stable low cloud cover across the islands, trapped below a strong low level inversion between 5 and 6 kft as evident in the 12z soundings from PHLI and PHTO. Radar imagery shows some isolated light showers moving into windward areas of Maui and the Big Island, with generally rain free conditions over the remaining land areas. Main short term concerns revolve around rain chances through the weekend and the potential for Vog to lift northward into the smaller islands.

Today through Sunday night, High pressure will remain anchored well to the northeast of the state, while the cold front pushes eastward to the north of the islands through the weekend. The front is then expected to stall out well north and west of the area by daybreak Monday. Meanwhile aloft, the strong mid-level ridging currently in place, will begin to break down over the weekend as upper level troughing shifts steadily eastward toward the island chain. Dry and stable conditions are expected to limit rainfall through tonight. Showers will mainly affect the coastal waters and windward areas favored in a east-southeasterly flow regime through the morning hours today and again overnight tonight, while the interior mountainous areas see the best chances for rain this afternoon into this evening. We should see a bit of an increase in shower activity Sunday afternoon as the airmass begins to destabilize with the approach of the upper level trough, along with PW values increasing closer to normal levels in the 1.2 to 1.3 inch range. Showers will still favor the interior mountainous areas during the afternoon and evening hours on Sunday, and windward locales Sunday night.

As for the potential for Vog to work northward into the smaller islands over the weekend, it appears that it should remain just to the south through day on today based on the latest UH Vog model depictions which line up well with low-light visible satellite imagery from late yesterday afternoon. The Vog plume is then expected to lift northward into the smaller islands tonight through Sunday and possibly linger across these areas into Sunday night.

Monday through next Friday, A re-enforcing area of high pressure will build to the north of the stalled out front north of the islands through the day on Monday, and this should allow the trade winds to return to the area by Monday afternoon. The returning trades will help to shift any lingering Vog which hasn’t exited by daybreak Monday, to the south of the smaller islands by Monday afternoon. The ridge of high pressure well north of the state will shift eastward and strengthen through mid to late next week, and this will allow moderate to locally breezy trades to overspread the state Monday night through late next week.

As for sensible weather details, speed convergence resulting from the returning trades along with less stable conditions associated with the approaching of upper level trough, will likely lead to an increase in showers on Monday. Showers are expected to favor windward and interior mountainous areas, but with the returning trades, some of the showers will affect leeward areas as well. The strengthening trades along with increasing boundary layer moisture will result a wetter more typical trade wind shower regime Monday night through late next week, with showers favoring windward areas, particularly during the overnight and early morning hours.

Central Valley (Kahului, Spreckelsville):

Mostly cloudy in the evening then becoming partly cloudy. Lows 61 to 66. Southeast winds up to 10 mph early in the evening becoming light.

Leeward West (Lahaina, Ka`anapali):

Partly cloudy. Isolated showers in the evening. Lows 62 to 68. Light winds. Chance of rain 20 percent.

Windward West (Wailuku, Waiehu):

Mostly cloudy with isolated showers in the evening, then partly cloudy after midnight. Lows 54 to 66. Northeast winds up to 10 mph with gusts to 25 mph early in the evening becoming light. Chance of rain 20 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows around 65 at the shore to around 48 at 5000 feet. Southeast winds 10 to 15 mph. Chance of rain 20 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Partly cloudy. Isolated showers in the evening. Lows around 64 at the shore to around 51 upcountry. East winds up to 10 mph. Chance of rain 20 percent.

Haleakala Summit

Mostly clear. Lows around 48. Southeast winds 10 to 15 mph.

Photo of the Day

Surf Photo of the Day - April 8th, 2017