1-3 foot
0-2 foot
1-3 foot
1-4 foot

Surface high pressure far north of the islands will continue to produce breezy trade winds into the weekend. The Small Craft Advisory has been extended through Thursday afternoon for the typically windy zones around Maui County and south of the Big Island. However, it will likely be extended beyond Thursday as winds are forecast to remain somewhat elevated.

Rough, choppy trade wind swell, and small short-period southeast and northeast swells will produce modest surf along east facing shores. Only small background swells are otherwise expected through early next week.

Hawaii Wave Height Model

Tide Predictions

High tide at Kahului was 1.28 foot at 2:00 PM early this afternoon, dropping to a low of -0.18 foot at 2:00 PM early this afternoon, then rising to a high of 2.50 foot at 2:00 PM early this afternoon, before once again dropping to a low of 0.86 foot at 2:00 PM early this afternoon.

The sunrise was at 05:56 am this morning and will set at 07:08 pm this evening. The Moon is currently 13 days old, and is in a Full Moon phase. The next Waning Gibbous will occur at 6:19 PM on Saturday, August 4th.

Hawaii Wind Report

Maui Weather

°/°
Wind: n/a at 0 mph
Sunrise:
Sunset:
current observations as of 8am August 20th, 2018

Weather Outlook for Wednesday, 25th July 2018

Summary

A drier trade wind pattern will prevail through much of the weekend and into the first half of next week as a high pressure ridge remains far to the north of the state. Tonight through Thursday, a weak tropical wave will pass through the islands elevating moisture levels, and increase shower activity a bit. Drier and more stable conditions return from Friday on into the middle of next week with clouds and scattered showers favoring windward and mountain areas.

Detailed Discussion

A 1032 mb high pressure center far to the northeast of the islands will maintain a high pressure ridge north of the state into next week. Expect drier and more stable weather conditions through much of the seven day forecast period with clouds and scattered showers favoring windward and mountain slopes.

The one exception to this drier trend will develop later tonight through Thursday night as a weak tropical wave drifts slowly east to west across the island chain. Higher moisture levels and additional instability will help enhance shower activity over the region. Precipitable Water levels will range from 1.5 to 2.0 inches with this system. Winds aloft within the boundary layer between 3000 and 10000 feet will shift towards the southeasterly direction. These southeast wind directions are less favorable for windward precipitation as the southeast wind flow passing over the islands tends to drive clouds and showers more parallel to windward mountain ranges. Overall, there is a net increase in shower activity for the islands starting tonight through Thursday night, especially in the overnight and early morning hours, with scattered to numerous showers forecast over windward and mountain slopes along with periods of isolated to scattered rainfall across leeward areas.

Volcanic emissions from the Kilauea East Rift Zone will blow towards the southwest through this afternoon. By tonight, the lower level winds will become more southeasterly as a weak trough passes through the islands. VOG (Volcanic smOG) emissions will drift more towards the west-northwest spreading into the northern sections of the Big Island along the Hamakua Coast through Thursday night. These winds will then shift back to a east- northeast direction by Friday morning with emissions returning to the Kau and Kona districts of the Big Island through the weekend.

Friday through next Wednesday, drier and more stable air returns to the islands in a continued trade wind weather pattern. Clouds and scattered showers will favor windward and mountain areas with isolated showers possible over leeward sections.

Central Valley (Kahului, Spreckelsville):

Breezy. Partly cloudy with isolated showers. Lows around 73. Northeast winds 10 to 20 mph. Chance of rain 20 percent.

Leeward West (Lahaina, Ka`anapali):

Breezy. Partly cloudy with isolated showers. Lows 70 to 75. Northeast winds 15 to 25 mph. Chance of rain 20 percent.

Windward West (Wailuku, Waiehu):

Mostly cloudy. Breezy. Scattered showers in the evening, then numerous showers after midnight. Lows 58 to 75. Northeast winds 10 to 20 mph. Chance of rain 70 percent.

Windard Haleakala (Hana, Haiku, Makawao):

Mostly cloudy. Scattered showers in the evening, then numerous showers after midnight. Lows around 75 at the shore to around 59 at 5000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.

Leeward Haleakala (Kihei, Wailea, Makena):

Partly cloudy. Lows around 74 at the shore to 59 to 65 upcountry. East winds up to 10 mph.

Haleakala Summit

Partly cloudy. Breezy. Isolated showers in the evening. Lows around 52 at the visitor center to around 49 at the summit. East winds 10 to 20 mph. Chance of rain 20 percent.

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