Weather

July 21, 2018 Weather Forecast

July 21, 2018, 7:00 AM HST
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Photo: Chris Archer

High Surf Advisory issued July 21 at 3:28AM HST until July 23 at 6:00PM HST by NWS

Our weather team will bring you any urgent weather alerts or updates as they occur. Check our breaking news section for the latest.

**Click directly on the images below to make them larger. Charts include: Maui County high/low forecasted temperatures, projected winds, projected localized weather conditions and expected wave heights.**

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Looking Ahead

Surface high pressure far north-northeast of the islands will maintain a relatively dry trade wind weather pattern across the islands through Sunday morning. Low clouds and light showers transported by the trades will continue across windward and mauka areas. An area of enhanced moisture embedded within the trades is forecast to spread westward across the islands from late Sunday into early next week. This will likely cause an increase in the coverage of low clouds and showers over windward sections from Sunday night into early next week.

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West Side

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Today: Sunny, with a high near 88. East northeast wind 11 to 13 mph.

Tonight: Mostly clear, with a low around 72. East northeast wind around 14 mph, with gusts as high as 18 mph.

Sunday: Isolated showers after 1pm. Mostly sunny, with a high near 89. East wind 8 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

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South Side

Today: Sunny, with a high near 89. Calm wind becoming west around 6 mph.

Tonight: Mostly clear, with a low around 71. Calm wind.

Sunday: Sunny, with a high near 90. Heat index values as high as 95. Calm wind becoming west around 5 mph.

North Shore

Today: Sunny, with a high near 86. Breezy, with an east northeast wind 14 to 18 mph, with gusts as high as 25 mph.

Tonight: Isolated showers after 7pm. Partly cloudy, with a low around 72. Breezy, with an east northeast wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Sunday: Scattered showers, mainly after 1pm. Mostly sunny, with a high near 87. Breezy, with an east northeast wind 13 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

Central Maui

Today: Isolated showers. Mostly sunny, with a high near 87. Breezy, with a northeast wind 14 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Tonight: Isolated showers. Partly cloudy, with a low around 70. Breezy, with a northeast wind 13 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Sunday: Scattered showers, mainly after noon. Mostly sunny, with a high near 88. Breezy, with a northeast wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Upcountry

Today: Isolated showers after noon. Mostly sunny, with a high near 75. Calm wind becoming west 5 to 7 mph. Chance of precipitation is 20%.

Tonight: Mostly clear, with a low around 58. Light southwest wind.

Sunday: Sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the morning.

East Maui

Today: Scattered showers. Partly sunny, with a high near 80. East northeast wind around 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Scattered showers. Mostly cloudy, with a low around 69. East northeast wind 7 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: Scattered showers. Partly sunny, with a high near 81. East wind 7 to 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Lanai City

Today: Sunny, with a high near 79. Breezy, with a northeast wind 20 to 22 mph, with gusts as high as 31 mph.

Tonight: Mostly clear, with a low around 67. Breezy, with a northeast wind 16 to 21 mph, with gusts as high as 29 mph.

Sunday: Isolated showers after noon. Sunny, with a high near 80. Breezy, with an east northeast wind 7 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Kaunakakai

Today: Sunny, with a high near 87. East northeast wind 7 to 11 mph.

Tonight: Mostly clear, with a low around 74. East wind 3 to 8 mph.

Sunday: Sunny, with a high near 88. Breezy, with a light east wind becoming east northeast 15 to 20 mph in the morning. Winds could gust as high as 28 mph.

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Data Courtesy of NOAA.gov

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