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This Afternoon

86° F
Mostly Sunny
Wind 16 to 20 mph ENE

Tonight

71° F
Partly Cloudy
Wind 8 to 16 mph NE

Juneteenth

86° F
Mostly Sunny
Wind 9 to 16 mph ENE

Thursday Night

71° F
Mostly Clear
Wind 10 mph ENE

Friday

86° F
Sunny
Wind 12 mph E

Friday Night

72° F
Mostly Clear
Wind 13 mph E

Saturday

88° F
Sunny
Wind 15 mph E

Saturday Night

72° F
Mostly Clear
Wind 15 mph E

Sunday

87° F
Sunny
Wind 15 mph ENE

Sunday Night

71° F
Partly Cloudy
Wind 14 mph ENE

Monday

86° F
Sunny
Wind 13 mph ENE

Monday Night

71° F
Mostly Clear
Wind 13 mph ENE

Tuesday

86° F
Mostly Sunny
Wind 12 mph ENE

Tuesday Night

72° F
Partly Cloudy
Wind 10 mph ENE
Cloud Weather Radar

Regional Maui Weather Forecast June 18, 2025


no slideshow
Photo Credit: Tyler Rooke

West Side

Today: Mostly sunny. Breezy. Isolated showers in the morning. Highs 80 to 85. Northeast winds 10 to 20 mph. Chance of rain 20 percent.

Tonight: Breezy. Partly cloudy with isolated showers. Lows 67 to 74. East winds 10 to 20 mph. Chance of rain 20 percent.

Juneteenth: Mostly sunny. Isolated showers in the morning. Highs 80 to 85. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

South Side

Today: Sunny and breezy. Highs around 88. Northeast winds up to 20 mph increasing to 10 to 20 mph in the afternoon.

Tonight: Mostly clear. Lows 67 to 75. Northeast winds up to 15 mph.

Juneteenth: Sunny and breezy. Highs around 89. Northeast winds up to 20 mph increasing to 10 to 20 mph in the afternoon.

North Shore

Today: Breezy. Showers in the morning, then numerous showers in the afternoon. Highs 78 to 85 near the shore to around 65 near 5000 feet. East winds 10 to 20 mph. Chance of rain near 100 percent.

Tonight: Mostly cloudy. Showers in the evening, then numerous showers after midnight. Lows around 71 near the shore to around 51 near 5000 feet. Southeast winds up to 15 mph. Chance of rain 90 percent.

Juneteenth: Partly sunny in the morning then becoming mostly sunny. Scattered showers. Highs 79 to 85 near the shore to around 66 near 5000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Central Maui

Today: Sunny and breezy. Highs 82 to 88. East winds 10 to 25 mph.

Tonight: Mostly clear. Breezy. Lows 67 to 72. East winds 10 to 20 mph.

Juneteenth: Sunny and breezy. Highs 81 to 88. East winds 10 to 20 mph.

Upcountry

Today: Mostly sunny with scattered showers. Highs around 64 at the visitor center to around 69 at the summit. East winds up to 15 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with scattered showers. Lows 43 to 53. East winds up to 15 mph increasing to 10 to 15 mph after midnight. Chance of rain 50 percent.

Juneteenth: Sunny and breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 65 at the visitor center to around 67 at the summit. East winds up to 15 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 50 percent.

East Maui

Today: Breezy. Showers in the morning, then numerous showers in the afternoon. Highs 78 to 85 near the shore to around 65 near 5000 feet. East winds 10 to 20 mph. Chance of rain near 100 percent.

Tonight: Mostly cloudy. Showers in the evening, then numerous showers after midnight. Lows around 71 near the shore to around 51 near 5000 feet. Southeast winds up to 15 mph. Chance of rain 90 percent.

Juneteenth: Partly sunny in the morning then becoming mostly sunny. Scattered showers. Highs 79 to 85 near the shore to around 66 near 5000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Lanai City

Today: Sunny and breezy. Isolated showers in the afternoon. Highs 72 to 81. Northeast winds 10 to 20 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Isolated showers in the evening. Lows 62 to 67. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Juneteenth: Sunny. Highs 72 to 80. Northeast winds 10 to 15 mph.

Kaunakakai

Today: Sunny and breezy. Highs 72 to 89. Northeast winds 10 to 20 mph.

Tonight: Breezy. Mostly clear with isolated showers. Lows 59 to 73. East winds 10 to 20 mph. Chance of rain 20 percent.

Juneteenth: Sunny and breezy. Highs 72 to 89. East winds 10 to 20 mph.

Detailed Forecast

Synopsis

The high pressure ridge north of the Hawaiian Islands will remain in place with moderate to locally breezy trade winds in the forecast through Friday. Trade wind speeds will increase slightly this weekend, becoming breezy to locally windy by Sunday. Brief periods of passing showers will continue this week with drier conditions expected this weekend, followed by increasing shower trends from Monday onward.

Discussion

Bands of clouds are shown on the latest satellite imagery this morning riding the easterly trade winds into the windward mountain slopes of each island. These clouds will continue to produce brief periods of showers mainly over the windward and mountain slopes favoring the overnight to early morning hours. A few bands of high level cirrus, ice crystal clouds, are drifting across the island chain this morning; likely enhancing sunrise and sunset colors.
The wind pattern remains moderate to locally breezy easterly trade winds through Friday. The high pressure ridge will strengthen over the islands this weekend, producing additional drying trends (lower humidity levels), and more stable conditions aloft. Expect breezy to locally windy trade winds by Sunday. The combination of drier humidity levels and stronger winds may elevate fire weather concerns from late Sunday morning through the afternoon hours.
Looking into the cloud and shower activity for the next seven days we continue to see subtle shifts in the day to night diurnal rainfall pattern through Friday. Overall a fairly stable conditions will prevail for the most part through Thursday with some periods of passing showers mainly in the overnight to early morning hours as a few unsettled passing cloud bands are lifted up and rain over windward island mountains. One wrinkle in the latest forecast guidance is the presence of an easterly wave, shown on 700 mb streamlines, moving into the islands on the trade winds from Thursday through Friday. Model cross sections suggest this passing trough will lift the boundary layer with temperature inversion rising into the 8,000 to 9,000 foot range. At this level, deeper clouds will likely increasing shower trends across all islands with some of the stronger showers drifting into the typically drier leeward areas. Rainfall amounts will still remain on the low side with the best chances for shower activity occurring during the typical overnight to early morning hours.
More stable trends develop this weekend as the ridge builds back into the Hawaii Region, decreasing island cloud cover and shower trends. Finally, expect a subtle increase in shower trends by early next week as a combination of upper (500 mb) and lower level (700 mb) troughing move into the region.

Aviation

Moderate to locally breezy trade winds will continue through Friday. Shower activity will be limited to windward and mountain areas, favoring the overnight to early morning hours.
AIRMET Sierra remains in effect for mountain obscurations along north and east slopes of Maui and the Big Island. These low cloud ceilings will likely diminish later this morning.
AIRMET Tango remains in effect for moderate turbulence over and south through west of island mountains. These stronger winds and turbulent conditions will likely continue through the day.

Marine

High pressure north of Hawaii will slowly move eastward and drive moderate to locally strong trades across the local waters. The Small Craft Advisory (SCA) for typically windier waters and channels near Maui and the Big Island has been extended through Thursday. Trade winds are forecast to strengthen this weekend, where other zones may need to be added to the SCA.
A small, long period, south swell is starting to slowly filter in early this morning and will peak later tonight into Thursday providing a slight boost in surf along south facing shores through the weeks end. Rough and choppy conditions along east facing shores will pick up a notch or two over the weekend and persist into early next week. Surf will remain nearly flat along north facing shores.

HFO Watches/Warnings/Advisories

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

Maui Now Weather is brought to you by Blue Hawaiian Helicopters.

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Data Courtesy of NOAA.gov

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