Weather Forecast

Maui Weather Forecast for January 24, 2023

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Photo Credit: Tyler Rooke

West Side

Today: Sunny with isolated showers. Highs 75 to 81. South winds around 10 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Lows 64 to 71. Northeast winds around 10 mph shifting to the east after midnight.

Wednesday: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 75 to 81. North winds 10 to 15 mph. Chance of rain 40 percent.

South Side

Today: Sunny. Isolated showers in the afternoon. Highs around 83. South winds around 10 mph shifting to the southwest in the afternoon. Chance of rain 20 percent.

Tonight: Mostly clear. Lows 62 to 70. North winds around 10 mph shifting to the east after midnight.

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Wednesday: Mostly sunny. Highs around 82. North winds around 10 mph.

North Shore

Today: Mostly sunny with scattered showers. Highs 74 to 80 near the shore to around 66 near 5000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with scattered showers. Lows around 66 near the shore to 48 to 54 near 5000 feet. Southeast winds 10 to 15 mph. Chance of rain 30 percent.

Wednesday: Partly sunny with scattered showers. Highs 73 to 79 near the shore to around 64 near 5000 feet. Northeast winds around 10 mph. Chance of rain 50 percent.

Central Maui

Today: Sunny. Isolated showers in the afternoon. Highs around 81. East winds around 10 mph. Chance of rain 20 percent.

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Tonight: Mostly clear. Lows 62 to 67. Southeast winds around 10 mph in the evening becoming light.

Wednesday: Mostly sunny with isolated showers. Highs around 80. North winds 10 to 15 mph. Chance of rain 20 percent.

Upcountry

Today: Mostly sunny with scattered showers. Highs around 60 at the visitor center to around 55 at the summit. East winds around 10 mph. Chance of rain 50 percent.

Tonight: Mostly clear with isolated showers. Lows around 47 at the visitor center to around 43 at the summit. East winds around 10 mph. Chance of rain 20 percent.

Wednesday: Mostly sunny. Isolated showers in the morning, then scattered showers in the afternoon. Highs around 60 at the visitor center to around 55 at the summit. Light winds becoming northeast around 10 mph in the afternoon. Chance of rain 50 percent.

East Maui

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Today: Mostly sunny with scattered showers. Highs 74 to 80 near the shore to around 66 near 5000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with scattered showers. Lows around 66 near the shore to 48 to 54 near 5000 feet. Southeast winds 10 to 15 mph. Chance of rain 30 percent.

Wednesday: Partly sunny with scattered showers. Highs 73 to 79 near the shore to around 64 near 5000 feet. Northeast winds around 10 mph. Chance of rain 50 percent.

Lanai City

Today: Mostly sunny. Scattered showers in the afternoon. Highs 70 to 77. Southeast winds around 10 mph. Chance of rain 30 percent.

Tonight: Partly cloudy. Lows around 63. Northwest winds around 10 mph shifting to the south after midnight.

Wednesday: Partly sunny with isolated showers. Highs 70 to 77. North winds 10 to 15 mph. Chance of rain 20 percent.

Kaunakakai

Today: Mostly sunny with isolated showers. Highs 66 to 82. Southeast winds around 10 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Lows 55 to 69. Southeast winds around 10 mph.

Wednesday: Mostly cloudy. Scattered showers in the morning, then isolated showers in the afternoon. Highs 67 to 81. North winds 10 to 15 mph. Chance of rain 50 percent.

Detailed Forecast

Synopsis

Southeast winds will give way to sea breezes and interior clouds and showers this afternoon. An approaching cold front will bring a period of showers as it advances through the state Wednesday through Thursday followed by returning trade winds. A period of wetter trade wind weather is possible late this week into next week.

Discussion

An increase in shower activity north and east of the islands is noted on the local radar composite as moisture increases within moderate southeast background flow. Light rainfall on the order of a few hundredths to around a tenth of an inch has also been observed over favored windward slopes of Maui and the Big Island. The remainder of the area remains largely cloud free as land breezes have pushed moisture offshore. Blocked southeast flow will once again give rise to sea breezes this morning into this afternoon. Given the increase in low-level moisture, it is reasonable to have increased expectations for inland clouds and showers today compared to yesterday. A few showers may be heavy on a localized basis, though ample mid-level dry air on this morning's Lihue sounding will provide a measure of stability that should keep shower intensity in check.
Meanwhile, a mid-level trough advancing toward the state is undergoing amplification south of 30N and east of the Dateline and will encroach on Kauai by late this evening. Signs of the approaching trough will be increasingly evident during the next 12 hours as offshore showers show greater vertical growth. A cold front lingering well west of the islands, rather ragged in appearance at press time, will likewise be reinvigorated by the approaching trough as begins to accelerate eastward toward the forecast area. The gradient will remain light through tonight over most of the area suggesting that land breezes will again maintain dry and stable conditions for Oahu through the Big Island tonight. Isolated thunderstorms will likely be confined to the waters north of the area where instability and synoptic scale forcing will be greatest, but thunder in the vicinity of or over Kauai is not out of the question by early Wednesday morning. Introduction of t-storms there will be given consideration in subsequent forecast updates. At this time, the greatest threat for any heavy rain over the western end of the state appears to be with any interior showers today. The cold front will advance through the state beneath the mid-level trough axis with breezy trades and rapidly increasing stability soon to follow. This will result in a limited time frame for typical trade wind showers to develop before dry advection and increasing stability bring an end to meaningful rainfall over Kauai and Oahu by Wednesday night. However, a robust convective response with locally heavy showers can still be expected over interior Maui and the Big Island as the trough approaches during peak heating on Wednesday.
Poor consensus among the global models arises as early as Thursday. The GFS, much stronger with the building surface high, favors a prolonged period of strong trades while the stalled cold front brings several days of showers to Windward Big Island. The weaker EC stalls the falls over central portions of the state favoring weaker trade winds and wetter weather focused over Maui County. This will then have ramifications heading into late weekend and early next week when global model consensus is actually quite strong that renewed mid-level troughing will invigorate the existing moisture field in the presence of breezy to strong trade winds. This will result in a period of wetter and more unstable trade wind weather statewide, but the remnant frontal band will serve as a focus for the heaviest rainfall.

Aviation

Light to moderate east-southeast flow will give way to variable variable winds near Kauai and Oahu this afternoon then northerly winds near Kauai and Oahu tonight. VFR will prevail almost everywhere this morning, with the exception of isolated MVFR ceilings in SHRA over windward Big Island and east Maui. Expect widespread leeward sea breezes this afternoon, leading to isolated MVFR ceilings and visibility in showers over interior areas. As an approaching upper level trough leads to greater instability, conditions may deteriorate further over Kauai, where convergence ahead of an approaching front may produce more active afternoon convection.
No AIRMETs are in effect and none anticipated through the morning.

Marine

A weakened ridge just north of the islands will keep a light to moderate east to southeast winds over the islands today. A cold front moves from west to east across the state from Wednesday through Thursday producing periods of showers for all islands. A high pressure system will build in quickly behind the front with strong northeast trade winds blowing into the region after frontal passage. A Small Craft Advisory (SCA) was cancelled this morning as seas have dropped below advisory thresholds. Another northwest swell will build into the region Tuesday night will once again raise combined seas above SCA thresholds for most coastal waters through Thursday. Breezy trade winds building into the region with the cold front on Wednesday will bring SCA winds into most channel zones lasting through Friday.
A diminishing northwest swell will decrease surf heights today to minimal High Surf Advisory (HSA) thresholds for most exposed north and west facing shores. A new long period XL northwest swell (310-320 degree) is expected to rapidly build surf heights to High Surf Warning (HSW) levels starting later tonight. This next NW swell will peak on Wednesday with HSW conditions lasting into Thursday. These surf heights will gradually trend lower from Thursday into Friday. Another northwest swell is expected to potentially reach HSA levels for north and west facing shores by Sunday.
Small surf remains in the forecast for south and east facing shores this week.

HFO Watches/Warnings/Advisories

High Surf Advisory until 6 PM HST this evening for Niihau, Kauai Leeward, Waianae Coast, Oahu North Shore, Olomana, Maui Windward West, Kauai North, Koolau Windward, Molokai Windward, Molokai North, Molokai West, Maui Central Valley North, Windward Haleakala.

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Data Courtesy of NOAA.gov

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