Maui weather forecast for October 20, 2024: Maui now

Photo credit: Joan M. Flake

West side

Today: Sunny and breezy. Highs 80 to 86. East wind 10 to 20 mph.

Tonight: Partly cloudy. There is a 20 percent chance of showers after midnight. Lows 68 to 75. Northeast winds 10 to 15 mph.

Monday: Mostly sunny with a 20 percent chance of rain. Highs: 80 to 86. Northeast winds around 10 mph, shifting to the west in the afternoon.

South side

Today: Sunny and breezy. Highs around 89. North winds up to 20 mph, shifting northeast at 10 to 20 mph in the afternoon.

Tonight: Mostly clear. Lows 67 to 76. North winds around 10 mph in the evening becoming increasingly light.

Monday: Mostly sunny. The chance of showers in the afternoon is 20 percent. Highs around 88. North winds around 10 mph, shifting to the west in the afternoon.

North bank

Today: Airy. Partly sunny with a chance of showers in the morning, then mostly sunny with a slight chance of showers in the afternoon. Highs range from 78 to 84 near the coast and around 68 near 5,000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.

Tonight: Mostly cloudy. Slight chance of rain in the evening, then a chance of rain after midnight. Lows range from about 72 near the coast to about 53 near 5,000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Monday: Partly sunny with a chance of showers in the morning, then mostly sunny with a slight chance of showers in the afternoon. Highs range from 79 to 84 near the coast and around 68 near 5,000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Central Maui

Today: Sunny and breezy. Highs: 81 to 89. Northeast winds 10 to 25 mph.

Tonight: Partly cloudy. Lows 67 to 72. Northeast winds 10 to 15 mph.

Monday: Mostly sunny. The chance of showers in the afternoon is 20 percent. Highs: 82 to 89. North wind around 10 mph.

Inland

Today: Sunny and breezy. Highs around 65 at the visitor center to around 62 at the summit. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon.

Tonight: Partly cloudy. Airy. Lows 45 to 55. Southeast winds 10 to 20 mph.

Monday: Mostly sunny in the morning, partly sunny in the afternoon with a 20 percent chance of rain. Highs around 64 at the visitor center to around 60 at the summit. Southeast winds 10 to 15 mph.

East Maui

Today: Airy. Partly sunny with a chance of showers in the morning, then mostly sunny with a slight chance of showers in the afternoon. Highs range from 78 to 84 near the coast and around 68 near 5,000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.

Tonight: Mostly cloudy. Slight chance of rain in the evening, then a chance of rain after midnight. Lows range from about 72 near the coast to about 53 near 5,000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Monday: Partly sunny with a chance of showers in the morning, then mostly sunny with a slight chance of showers in the afternoon. Highs range from 79 to 84 near the coast and around 68 near 5,000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Lanai City

Today: Sunny and breezy. Highs: 74 to 81. Northeast winds gusting to 20 mph.

Tonight: Partly cloudy. Low around 66. Northeast winds up to 10 mph in the evening, becoming increasingly light.

Monday: Mostly sunny in the morning, partly sunny in the afternoon with a 20 percent chance of rain. Highs: 73 to 81. East winds up to 10 mph becoming southeast around 10 mph in the afternoon.

Kaunakakai

Today: Sunny and breezy. The chance of showers in the morning is 20 percent. Highs: 71 to 90. East winds 10 to 20 mph.

Tonight: Partly cloudy. Lows 59 to 75. East winds 10 to 15 mph.

Monday: Sunny. Highs: 71 to 90. In the morning there will be an east wind around 10 mph becoming light.

Summary

Locally breezy trade winds will continue tonight, bringing only a few showers, particularly in windward areas. Winds will ease on Monday and remain light for the rest of the week. The light winds, together with a mountain ridge high up, ensure mostly dry weather. A wetter regime could develop by next weekend.

discussion

Locally windy ENE trade winds will continue tonight bringing only a few showers, mainly in windward areas. Winds will ease on Monday and remain light for the rest of the week. The light winds, together with a mountain ridge high up, ensure mostly dry weather. Long-term forecasts suggest a trend toward a wetter pattern could develop by next weekend.
A strengthening and locally breezy trade wind is supported by a ridge well north of the islands, with broad low pressure about 1,200 miles northwest of Kauai. A strong and low droop inversion is the result of a strong mid-high back centered directly over the head. The end result is a mostly dry trade wind regime, with radar and satellite randomly showing scattered, stable and rainy low clouds that bring little precipitation. Little change is expected by this evening.
The low northwest of the area will persist in one form or another for most of next week as another low develops well northeast of the islands. This will result in a significant reduction in the low pressure gradient, with light east-southeast winds expected throughout the week. The ridge remains overhead and it is likely that it will remain mostly dry. The best chance for a shower may be over leeward areas in the afternoon as sea breeze convergence drives cloud formation, with a small chance of windward showers overnight.
Although confidence is quite low due to the significant variations in forecasts, a slow low in the air could develop near the islands next weekend, potentially leading to a wetter regime.

aviation

Moderate to locally windy trade is expected for the remainder of today. Winds should ease on Monday and remain light for the rest of the week. SHRA and low cigs should favor windward and mauka locations. Short MVFR conditions are possible in SHRA, but VFR should prevail.
There are currently no AIRMETs in force.

marine

Moderate to locally strong easterly trade winds will continue throughout the day as upper elevation levels continue north of the islands. A Small Craft Advisory (SCA) is in effect until 6:00 p.m. today for the typically windier waters and channels around Maui County and the Big Island. Winds will gradually ease tonight into the early part of the week as two lows are forecast to form well to the northwest and northeast of the waters. The surface ridge will weaken, allowing light to moderate east-southeast trading to remain stable through Friday.
A small, short-term north-northwest swell will gradually ease by midweek and shift to a more northeasterly direction by Tuesday. Weak background energy from the northwest is expected throughout the week before a small to moderate mid-period northeast rise is forecast by the end of the week. On south-facing shores, there are southerly waves in the background that prevent the surf from becoming flat. A small, long-term strengthening is expected to arrive on Monday evening and diminish over the week, followed by another on Friday.
A Coastal Flooding Statement (CFWHFO) for all coastal areas highlights the fact that higher than forecast water levels are associated with full moon flooding, which may result in minor coastal flooding, particularly in the early hours into Monday morning.

HFO Watches/Warnings/Advisories

Small Boat Advisory until 6:00 PM HST this evening for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.

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Data courtesy of NOAA.gov