1-3+ foot
1-3 foot
3-5+ foot
5-8 foot

Strong trade winds combined with both east and south swells will maintain rough conditions through the weekend. A Small Craft Advisory remains in effect for all Hawaiian waters through 6 AM Sunday morning, and this advisory may need to be extended for some waters through Sunday afternoon. Winds and seas should drop below advisory levels across most or all of the waters by Monday. Advisory-level winds may return to the typically windy areas around Maui County and the Big Island on Tuesday or Wednesday.

With Barber’s Point still reporting 4 feet at 13 seconds as of 2 AM, the NWS has extended the High Surf Advisory (HSA) for south facing shores through today. Offshore buoy reports suggest that the swell and surf should begin to decrease during the afternoon.

Along east facing shores, expect a mixture of long period swell from former Hurricane Fabio and short period trade wind swell to generate rough surf today and tonight, and the High Surf Advisory remains in effect through 6 AM Sunday morning.

Hawaii Wave Height Model

Tide Predictions

Low tide at Kahului was 0.24 foot at 2:00 PM early this afternoon, rising to a high of 1.62 foot at 2:00 PM early this afternoon, then dropping to a low of 1.21 foot at 2:00 PM early this afternoon, before once again rising to a high of 1.56 foot at 2:00 PM early this afternoon.

The sunrise was at 05:49 am this morning and will set at 07:12 pm this evening. The Moon is currently 23 days old, and is in a Waning Crescent phase. The next New Moon will occur at 2:49 AM on Friday, July 13th.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 11pm September 25th, 2018

Weather Outlook for Saturday, 7th July 2018

Summary

The current trade wind pattern, with clouds and showers focusing across windward and mauka areas, will continue through the forecast period. Enhanced showers and increased shower coverage will persist through today as a weak surface trough moves across the islands. A band of moisture will affect windward portions of Kauai and Oahu on Sunday. Trade winds will decrease slightly on Monday and Tuesday as enhanced shower activity clears from east to west.

Detailed Discussion

A 1037 mb high near 40N165W, far north northwest of the main Hawaiian islands, continues to drive breezy trade winds across local waters this morning. Satellite loop shows an area of enhanced moisture moving across waters lee of the Big Island and Maui while the islands farther to the west have clearer skies. However, another area of enhanced moisture lies across windward waters and is poised to move across island chain within the next few hours. Radar shows scattered to numerous showers across windward portions of the islands east of Oahu, scattered showers across Oahu and isolated showers across Kauai. A small area of enhanced showers persists across the active volcanic rift zone in Puna district.

Breezy and wet conditions are expected for much of the state today. Trade winds will persist as high pressure holds to the north. The area of enhanced moisture just upwind of the islands will spread westward through the day. Showers should be active along windward slopes, with periods of passing showers expected across leeward sections from Maui to Kauai. The combination of this moisture and a weak mid level trough will erode the trade wind inversion, leading to spotty heavy showers and perhaps a thunderstorm on the Big Island, mainly within the volcanic plume in Puna and over the interior.

Breezy trade winds will decrease a bit Sunday and Monday. As the area of enhanced moisture clears the state from east to west, a separate band of low level moisture, currently sitting less than 200 miles north of Kauai, will move over the northern end of the state. This points towards wet windward conditions for Kauai and Oahu, while the rest of the state experiences a decrease in rainfall.

A drier and more stable trade wind flow will settle over the entire state by the middle of next week. High pressure will remain north of the state, driving moderate to locally breezy trade winds. Ridging aloft will bring stable conditions. No areas of enhanced moisture are seen at this time.

Central Valley (Kahului, Spreckelsville):

HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING. Windy. Mostly cloudy with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs 84 to 90. Northeast winds 15 to 30 mph. Chance of rain 50 percent.

Leeward West (Lahaina, Ka`anapali):

HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING. Windy. Mostly cloudy with showers likely in the morning, then mostly sunny with isolated showers in the afternoon. Highs 79 to 87. Northeast winds 25 to 30 mph. Chance of rain 70 percent.

Windward West (Wailuku, Waiehu):

HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST SUNDAY. Windy. Mostly cloudy with showers likely. Highs 73 to 87. Northeast winds 20 to 30 mph. Chance of rain 70 percent.

Windard Haleakala (Hana, Haiku, Makawao):

HIGH SURF ADVISORY IN EFFECT UNTIL 6 AM HST SUNDAY. Mostly cloudy. Breezy. Frequent showers in the morning, then showers likely in the afternoon. Highs around 84 at the shore to around 74 at 5000 feet. East winds 15 to 25 mph. Chance of rain 80 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM HST THIS EVENING. Breezy. Mostly cloudy with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs around 92 at the shore to around 80 upcountry. East winds 15 to 25 mph. Chance of rain 50 percent.

Haleakala Summit

Partly cloudy. Breezy. Isolated showers in the evening, then scattered showers after midnight. Lows around 50 at the visitor center to around 46 at the summit. East winds 15 to 25 mph. Chance of rain 50 percent.

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