Photo Credit: Laila Reiss

West Side

Today: Windy. Mostly sunny with isolated showers. Highs 81 to 87. Northeast winds 15 to 30 mph. Chance of rain 20 percent.

Tonight: Windy. Partly cloudy with isolated showers. Lows around 69. Northeast winds 20 to 30 mph. Chance of rain 20 percent.

Saturday: Mostly sunny. Windy. Isolated showers in the morning. Highs 81 to 87. Northeast winds 20 to 30 mph decreasing to 10 to 30 mph in the afternoon. Chance of rain 20 percent.

South Side

Today: Mostly sunny. Breezy. Highs 85 to 90. Northeast winds 10 to 25 mph.

Tonight: Mostly clear. Breezy. Lows around 68. Northeast winds 10 to 25 mph.

Saturday: Mostly sunny. Breezy. Highs 85 to 90. Northeast winds 10 to 25 mph with gusts to 45 mph.

North Shore

Today: Mostly cloudy. Breezy. Occasional showers in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to around 65 near 5000 feet. East winds 10 to 25 mph. Chance of rain 80 percent.

Tonight: Breezy. Mostly cloudy with scattered showers. Lows 64 to 71 near the shore to around 50 near 5000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Saturday: Partly sunny. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 81 near the shore to around 65 near 5000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Central Maui

Today: Mostly sunny. Windy. Isolated showers in the morning. Highs 84 to 90. Northeast winds 10 to 30 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Breezy. Isolated showers in the evening. Lows 66 to 72. Northeast winds 10 to 25 mph. Chance of rain 20 percent.

Saturday: Mostly sunny. Windy. Highs 84 to 90. Northeast winds 10 to 30 mph.

Upcountry

Today: Windy. Mostly sunny with scattered showers. Highs 59 to 72. East winds up to 20 mph increasing to up to 30 mph in the afternoon. Chance of rain 50 percent.

Tonight: Partly cloudy. Windy. Scattered showers in the evening. Lows 46 to 55. East winds up to 30 mph increasing to 10 to 30 mph after midnight. Gusts up to 50 mph. Chance of rain 50 percent.

Saturday: Mostly sunny. Windy. Highs 59 to 72. East winds up to 30 mph.

East Maui

Today: Mostly cloudy. Breezy. Occasional showers in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to around 65 near 5000 feet. East winds 10 to 25 mph. Chance of rain 80 percent.

Tonight: Breezy. Mostly cloudy with scattered showers. Lows 64 to 71 near the shore to around 50 near 5000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Saturday: Partly sunny. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 81 near the shore to around 65 near 5000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Lanai City

Today: Windy. Mostly sunny in the morning, then partly sunny with isolated showers in the afternoon. Highs 76 to 83. Northeast winds 10 to 30 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Windy. Lows around 67. Northeast winds 15 to 30 mph.

Saturday: Mostly sunny in the morning then becoming partly sunny. Windy. Highs 76 to 83. Northeast winds 15 to 30 mph.

Kaunakakai

Today: Mostly sunny. Breezy. Isolated showers in the morning. Highs 74 to 88. Northeast winds 15 to 25 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Breezy. Lows 62 to 73. Northeast winds 15 to 25 mph.

Saturday: Mostly sunny. Breezy. Highs 74 to 88. Northeast winds 10 to 25 mph.

Detailed Forecast

Synopsis

Strong trade winds will persist into next week, bringing brief showers to windward and mauka areas. Fewer leeward clouds are expected over the weekend, while the Kona slopes will receive their typical summertime afternoon/evening clouds and showers.

Discussion

A westward-moving mid-level trough at 700 mb will continue to enhance windward and mauka low clouds and showers this morning. Guidance continues to show the trough dissipating tonight into Saturday. Breezy to locally windy trades will prevail into next week as the surface ridge remains far north of the islands. ENE trade winds will deliver low clouds and brief showers to windward and mauka areas through the forecast period as the atmosphere stabilizes. Leeward areas will remain mostly dry, but Kona slopes of the Big Island will see their typical summertime afternoon and evening clouds and showers. May see an uptick in windward clouds and showers late next week as a weak upper level disturbance develops north of the state.

Aviation

A weak disturbance moving through the islands will enhance low clouds, and windward showers. Breezy to locally windy trades will continue for the next few of days, with passing showers favoring windward and mountain areas. Mostly VFR conditions will prevail, with brief periods of MVFR in showers/low clouds mainly in the overnight to early morning hours.
AIRMET Sierra for tempo mountain obscuration remains in effect for north through east sections of Kauai, Oahu, Molokai, Maui and the Big Island. These low cloud ceilings will improve later this morning.
AIRMET Tango for low-level turbulence over and in the lee of island terrain will remain in effect for the next several days due to the strong trades.

Marine

Strong- to near gale-force east to northeast trades with seas up to the 10 ft advisory level will continue through early next week as the ridge holds strong to the north. The strong trades could ease slightly later next week as the ridge weakens.
Surf along east facing shores will remain rough through early next week due to the strong trades locally and upstream of the state. A downward trend is possible around midweek as the upstream fetch weakens and the local trades begin to ease.
Surf along south facing shores will remain up as overlapping south-southwest swells move through. A fresh south-southwest that has filled in will result in an gradually upward trend through Saturday. A more significant south swell will gradually fill in late Saturday night into Sunday, then likely reach the advisory level late Sunday through Monday. A gradual downward trend is expected Tuesday through midweek.

HFO Watches/Warnings/Advisories

Small Craft Advisory until 6 PM HST Saturday for all Hawaiian waters,

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Data Courtesy of NOAA.gov