Weather Forecast

Maui Weather Forecast for April 24, 2022

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Photo Credit: Jeni Ji Cousins

West Side

Today: Breezy. Partly sunny with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs 76 to 86. Northeast winds 10 to 20 mph. Chance of rain 40 percent.

Tonight: Breezy. Partly cloudy with isolated showers in the evening, then mostly cloudy with scattered showers after midnight. Lows 66 to 73. Northeast winds 15 to 20 mph. Chance of rain 40 percent.

Monday: Breezy. Partly sunny with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs 76 to 86. Northeast winds up to 20 mph. Chance of rain 40 percent.

South Side

Today: Mostly sunny. Highs around 87. North winds 10 to 15 mph.

Tonight: Mostly clear. Lows 65 to 72. North winds 10 to 15 mph.

ARTICLE CONTINUES BELOW AD

Monday: Mostly sunny. Highs around 87. North winds 10 to 15 mph.

North Shore

ARTICLE CONTINUES BELOW AD

Today: Mostly cloudy. Showers likely in the morning, then scattered showers in the afternoon. Highs 74 to 84 near the shore to around 64 near 5000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.

Tonight: Mostly cloudy with showers likely. Lows around 69 near the shore to 47 to 53 near 5000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.

Monday: Mostly cloudy. Showers likely in the morning, then scattered showers in the afternoon. Highs 74 to 83 near the shore to around 64 near 5000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.

Central Maui

ARTICLE CONTINUES BELOW AD

Today: Partly sunny with isolated showers in the morning, then mostly sunny in the afternoon. Highs 81 to 87. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Isolated showers. Lows 65 to 70. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Monday: Partly sunny with isolated showers in the morning, then mostly sunny in the afternoon. Highs 81 to 87. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Upcountry

Today: Mostly sunny in the morning then becoming partly sunny. Breezy. Scattered showers. Highs around 61 at the visitor center to around 57 at the summit. East winds 10 to 20 mph. Chance of rain 50 percent.

Tonight: Breezy. Partly cloudy with scattered showers. Lows around 45 at the visitor center to around 43 at the summit. East winds 10 to 20 mph. Chance of rain 50 percent.

Monday: Mostly sunny in the morning then becoming partly sunny. Breezy. Scattered showers. Highs around 61 at the visitor center to around 57 at the summit. East winds 10 to 20 mph. Chance of rain 50 percent.

East Maui

Today: Mostly cloudy. Showers likely in the morning, then scattered showers in the afternoon. Highs 74 to 84 near the shore to around 64 near 5000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.

Tonight: Mostly cloudy with showers likely. Lows around 69 near the shore to 47 to 53 near 5000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.

Monday: Mostly cloudy. Showers likely in the morning, then scattered showers in the afternoon. Highs 74 to 83 near the shore to around 64 near 5000 feet. East winds 10 to 15 mph. Chance of rain 70 percent.

Lanai City

Today: Sunny in the morning, then mostly cloudy with isolated showers in the afternoon. Highs 71 to 80. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy in the evening then becoming mostly clear. Lows around 64. Northeast winds 10 to 15 mph.

Monday: Sunny in the morning, then mostly cloudy with isolated showers in the afternoon. Highs 71 to 79. East winds up to 15 mph. Chance of rain 20 percent.

Kaunakakai

Today: Partly sunny. Breezy. Isolated showers in the morning. Highs 66 to 83. East winds 15 to 20 mph. Chance of rain 20 percent.

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Breezy. Isolated showers. Lows 56 to 72. East winds 15 to 20 mph. Chance of rain 20 percent.

Monday: Partly sunny. Breezy. Isolated showers in the morning. Highs 66 to 83. East winds 15 to 20 mph. Chance of rain 20 percent.

Detailed Forecast

Synopsis

Expect breezy trade wind conditions to continue into the middle of the week as high pressure persists to our north. Cloud cover and scattered showers will favor windward and mountain areas, but leeward areas my also get wet from time to time given the strength of the trades. Trades may decrease around the middle of the week as a weakness develops in the subtropical ridge.

Discussion

A broad area of overcast low clouds lies across the islands this morning and will likely linger through this afternoon. Radar shows isolated to scattered showers within this cloud cover, favoring windward areas but, with the breezy trades, blowing leeward from time to time. Overnight soundings continue to show a neutral airmass with a strong inversion near 6500 feet, likely capping deep convection and keeping total rainfall light. Beneath the inversion, misty showers will continue to occur across almost all of the islands until the the overcast cloud area passes west of the islands later today or this evening.
High pressure northeast of the state will continue to drive moderate to locally strong trade winds into the middle of the week, with little variation in speed. Scattered light showers will mainly affect windward and mountain areas of the islands. Models continue to show the potential for a decrease in trade winds around the middle of the week due to a weak surface trough moving eastward north of the state, creating a weakness in the subtropical ridge.
Models show that trades will stay around through the end of the week, but differ on wind strength. We will continue to use a model blend for winds in the extended period, keeping the slightly weakened trades in place into next weekend. Models also show an upper trough over or near the state toward the end of the week, but differ in its strength and location. This could at least weaken the strong inversion and allow for more vertical cloud development, though confidence remains low on trough location and specific impacts at this time.

Aviation

Breezy easterly trade winds will continue into Monday as a strong ridge of high pressure remains in place north of the islands. This moist trade wind pattern will continue to force a majority of showers and low level clouds toward favored windward and mauka areas. The radar trends this morning support the idea of rain showers stretching across windward slopes and in channels between mainly the central and eastern islands, in weakly organized convergent low level flow. Additionally, sea breeze clouds and isolated showers are expected once again today across leeward Big Island. A mix of VFR/MVFR cigs continue across TAF locations this morning, though cigs will continue to deteriorate toward more widespread MVFR conds as the band of moisture north of the islands becomes concentrated along windward zones. AIRMET Sierra continues for tempo mtn obsc across most wind ward zones through this afternoon.
AIRMET Tango remains in effect for moderate low level turbulence below 8000 feet over and downwind of the terrain for all islands. These turbulent conditions are expected through today.

Marine

The large, long-period northwest swell (330 degrees) is expected to peak this morning. A High Surf Advisory remains in effect for exposed north and west facing shores of the smaller islands through tonight. Expect the surf to then gradually lower through Tuesday, and remain small through much of the remainder of the week. A moderate, long period south swell (170-180 degrees) will boost surf to slightly above seasonal averages today, before gradually lowering during the start of the new work week.
High pressure to the northeast of the islands continues to bring locally strong trade winds to the region, and this is expected to continue over the next several days. These winds will continue to produce moderate, choppy surf along east facing shores. A surface trough approaching from the northwest will first enter the offshore waters around Wednesday, and help to weaken the pressure gradient over coastal and offshore waters during the middle to latter half of the week leading to a decrease in wind speeds.
A Small Craft Advisory (SCA) is in effect for all Hawaiian coastal waters through today for a combination of the locally strong trade winds and seas generated by the northwest swell mentioned above. As the northwest swell declines tonight, the SCA will be scaled back to the typically windier waters near Maui County and the Big Island. The SCA for the winds may need to be extended into the middle of the week, however will hold off on that extension to monitor the trend of the winds in the model with the approaching trough mentioned above.

HFO Watches/Warnings/Advisories

High Surf Advisory until 6 AM HST Monday for Niihau, Kauai Leeward, Waianae Coast, Oahu North Shore, Maui Windward West, Kauai North, Molokai Windward, Molokai North, Molokai West, Maui Central Valley North, Windward Haleakala.
Small Craft Advisory until 6 PM HST Monday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
Small Craft Advisory until 6 PM HST this evening for Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters, Kaiwi Channel, Maui County Windward Waters, Maui County Leeward Waters, Big Island Windward Waters.

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Data Courtesy of NOAA.gov

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