Weather Forecast

Maui Weather Forecast for November 21, 2021

November 21, 2021, 7:15 AM HST
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Photo Credit: Tyler Rooke

West Side

Today: Mostly sunny with isolated showers. Highs 77 to 86. East winds 10 to 15 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Isolated light showers after midnight. Lows 67 to 74. East winds 10 to 15 mph. Chance of rain 20 percent.

Monday: Sunny. Isolated light showers in the morning. Highs 76 to 86. East winds 10 to 15 mph. Chance of rain 20 percent.

South Side

Today: Sunny. Highs around 88. Northeast winds up to 15 mph.

Tonight: Mostly clear. Lows 65 to 74. Northeast winds 10 to 15 mph.

ARTICLE CONTINUES BELOW AD

Monday: Sunny. Highs around 87. Northeast winds 10 to 15 mph.

North Shore

ARTICLE CONTINUES BELOW AD

Today: Breezy. Mostly sunny with isolated showers. Highs 76 to 83 near the shore to around 66 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy with scattered light showers. Lows around 70 near the shore to 49 to 55 near 5000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Monday: Mostly sunny. Scattered light showers in the morning, then isolated light showers in the afternoon. Highs 75 to 82 near the shore to around 65 near 5000 feet. East winds 10 to 15 mph. Chance of rain 40 percent.

Central Maui

ARTICLE CONTINUES BELOW AD

Today: Sunny and breezy. Isolated showers in the morning. Highs 81 to 87. East winds 10 to 20 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Isolated light showers after midnight. Lows 66 to 72. East winds 10 to 15 mph. Chance of rain 20 percent.

Monday: Mostly sunny. Isolated light showers in the morning. Highs 80 to 87. East winds 10 to 15 mph. Chance of rain 20 percent.

Upcountry

Today: Sunny with isolated showers. Highs around 61 at the visitor center to around 57 at the summit. East winds up to 15 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Isolated light showers after midnight. Lows around 49 at the visitor center to around 45 at the summit. East winds 10 to 15 mph. Chance of rain 20 percent.

Monday: Sunny. Isolated light showers in the morning. Highs around 60 at the visitor center to around 57 at the summit. East winds 10 to 15 mph. Chance of rain 20 percent.

East Maui

Today: Breezy. Mostly sunny with isolated showers. Highs 76 to 83 near the shore to around 66 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy with scattered light showers. Lows around 70 near the shore to 49 to 55 near 5000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Monday: Mostly sunny. Scattered light showers in the morning, then isolated light showers in the afternoon. Highs 75 to 82 near the shore to around 65 near 5000 feet. East winds 10 to 15 mph. Chance of rain 40 percent.

Lanai City

Today: Mostly sunny. Isolated showers in the afternoon. Highs 73 to 81. Northeast winds up to 15 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Lows around 65. Northeast winds around 10 mph.

Monday: Mostly sunny. Isolated light showers in the afternoon. Highs 73 to 81. East winds around 10 mph. Chance of rain 20 percent.

Kaunakakai

Today: Breezy. Mostly sunny with isolated showers. Highs 68 to 87. East winds 10 to 20 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Breezy. Lows 58 to 74. East winds 15 to 20 mph.

Monday: Sunny and breezy. Highs 67 to 87. East winds 15 to 20 mph.

Detailed Forecast

Synopsis

Trade winds will range from gentle to locally breezy through the upcoming holiday. Our airmass will be rather dry and stable through Tuesday. A minor increase in trade wind showers is expected about Tuesday night as additional moisture begins to return.

Discussion

There is little to no change in forecast philosophy from last evening. A weak ridge north of the main Hawaiian Islands supports light easterly trade flow from the Big island through Oahu, while light northerly flow persists near Kauai. Satellite loop shows patchy broken to overcast low clouds across windward portions of the Big Island, while scattered low clouds to clear skies are noted over the smaller islands. Land breezes across the smaller islands will likely keep cloud cover to a minimum there through much of this morning. Returning trade flow will cause a gradual increase in cloud cover across windward areas later today.
A surface high far north of the islands is passing eastward. This will initially boost trades to locally breezy levels today and Monday. After the high passes eastward, a nearly stationary surface ridge will get left behind through the remainder of the forecast period. Expect gentle to locally breezy trades through Saturday. Low clouds and showers will favor windward areas as trade winds spread westward and persist. Trade showers will increase slightly Tuesday night as additional moisture begins to return within trade flow.

Aviation

Trade winds will continue to strengthen this morning, reaching moderate to locally breezy levels by this afternoon. Rather dry weather is expected during the next 24 hours, with prevailing VFR conditions at the terminals.
SIGMET Victor remains in effect for severe upper level turbulence between FL260 and FL410 early this morning. Severe upper level turbulence is forecast to remain over the state through the day and much of tonight.

Marine

Trade winds are forecast in the moderate to locally strong range today, as a high pressure ridge builds in north of the island chain. Trade wind speeds will reach Small Craft Advisory (SCA) levels for the typically windy waters around Maui County and the Big Island and a SCA remains in effect for these areas. Moderate to locally strong trades will continue through Thursday.
Surf will remain small for all shores into Tuesday. A slight bump in northwest swell energy will increase surf along north and west facing shores from Monday night through Tuesday. A larger northwest swell will arrive on Wednesday, likely bringing advisory level surf along exposed north and west facing shores by Thanksgiving Day. Stronger trade winds developing over and upstream of the islands will bring an increase in surf along east facing shores early next week. South shore surf will remain very small through the forecast period.

HFO Watches/Warnings/Advisories

Small Craft Advisory until 6 PM HST Monday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.

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Data Courtesy of NOAA.gov

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