Hilo

Tonight: Partly cloudy with isolated showers. Lows 59 to 67 near the shore to 47 to 53 at 4000 feet. Northwest winds up to 10 mph. Chance of rain 20 percent.

Thursday: Mostly sunny in the morning then becoming partly sunny. Scattered showers. Highs 76 to 81 near the shore to around 65 at 4000 feet. West winds up to 10 mph shifting to the east in the afternoon. Chance of rain 50 percent.

Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 60 to 66 near the shore to 46 to 54 at 4000 feet. Southeast winds up to 10 mph shifting to the north after midnight. Chance of rain 40 percent.

Kona

Tonight: Partly cloudy with isolated showers. Haze. Lows around 69 near the shore to 43 to 49 near 5000 feet. Light winds. Chance of rain 20 percent.

Thursday: Mostly sunny. Isolated showers in the morning, then scattered showers in the afternoon. Haze through the day. Highs around 83 near the shore to around 66 near 5000 feet. Light winds. Chance of rain 40 percent.

Thursday Night: Partly cloudy. Isolated showers in the evening. Haze through the night. Lows around 68 near the shore to 42 to 49 near 5000 feet. Light winds. Chance of rain 20 percent.

Waimea

Tonight: Mostly clear with isolated showers. Lows 59 to 68 near the shore to 49 to 58 near 3000 feet. East winds up to 15 mph. Chance of rain 20 percent.

Thursday: Breezy. Mostly sunny with isolated showers. Highs around 77 near the shore to 68 to 75 near 3000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.

Thursday Night: Partly cloudy with isolated showers. Lows 59 to 68 near the shore to 50 to 57 near 3000 feet. East winds 10 to 15 mph. Chance of rain 20 percent.

Kohala

Tonight: Mostly clear with isolated showers. Lows 59 to 68 near the shore to 49 to 58 near 3000 feet. East winds up to 15 mph. Chance of rain 20 percent.

Thursday: Breezy. Mostly sunny with isolated showers. Highs around 77 near the shore to 68 to 75 near 3000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.

Thursday Night: Partly cloudy with isolated showers. Lows 59 to 68 near the shore to 50 to 57 near 3000 feet. East winds 10 to 15 mph. Chance of rain 20 percent.

South Big Island

Tonight: Mostly clear. Breezy. Isolated showers in the evening. Haze through the night. Lows around 70 near the shore to around 49 near 5000 feet. Northeast winds up to 20 mph. Chance of rain 20 percent.

Thursday: Mostly sunny. Breezy. Haze through the day. Scattered showers in the afternoon. Highs around 82 near the shore to around 66 near 5000 feet. Northeast winds up to 20 mph. Chance of rain 40 percent.

Thursday Night: Mostly clear. Isolated showers in the evening. Haze through the night. Lows around 70 near the shore to around 48 near 5000 feet. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Puna

Tonight: Partly cloudy with isolated showers. Lows 59 to 67 near the shore to 47 to 53 at 4000 feet. Northwest winds up to 10 mph. Chance of rain 20 percent.

Thursday: Mostly sunny in the morning then becoming partly sunny. Scattered showers. Highs 76 to 81 near the shore to around 65 at 4000 feet. West winds up to 10 mph shifting to the east in the afternoon. Chance of rain 50 percent.

Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 60 to 66 near the shore to 46 to 54 at 4000 feet. Southeast winds up to 10 mph shifting to the north after midnight. Chance of rain 40 percent.

Waikoloa

Tonight: Mostly clear. Isolated showers in the evening. Haze through the night. Lows 67 to 72 near the shore to 46 to 51 above 4000 feet. Southeast winds up to 15 mph. Chance of rain 20 percent.

Thursday: Mostly sunny. Haze through the day. Isolated showers in the afternoon. Highs around 83 near the shore to 64 to 71 above 4000 feet. Northeast winds up to 10 mph shifting to the northwest in the afternoon. Chance of rain 20 percent.

Thursday Night: Mostly clear. Haze in the evening. Lows 66 to 71 near the shore to 45 to 51 above 4000 feet. Light winds.

Detailed Forecast

Synopsis

Light winds and dry weather prevail for the next week bringing a prolonged stretch of benign weather.

Discussion

A strong Pacific jet extends across the north central Pacific in maintenance of expansive ridging established to south. The trade wind belt remains suppressed mostly south of the state with a surface ridge axis in place north of Kauai. This pattern supports moderate trades over the eastern end of the state decreasing to light trades over the western end where afternoon sea breezes and overnight land breezes will be common. Active mid-level subsidence, light winds, and no apparent upstream moisture source favor dry and benign weather through the forecast period.

Aviation

A ridge north of the islands will support SE winds over Kauai and Oahu, and light to moderate E winds over Maui and Hawaii Counties. Low cigs and SHRA should favor windward and mauka locations with periods of MVFR conds. In addition, land/sea breezes will be likely over leeward areas and interior areas with VFR conds will prevail.
No AIRMETs are in effect and none are anticipated.

Marine

moderate to locally fresh easterly trade winds in the forecast. The ridge will weaken from Thursday into Friday as a shallow cold front approaches the islands from the northwest. A Small Craft Advisory (SCA) for winds around Big Island and Maui County through Thursday morning, this advisory will likely be extended through Thursday afternoon.
A large west-northwest swell peaked will decline this evening, as another west northwest swell builds in by Thursday morning pushing surf heights back up over advisory levels for exposed north and west facing shores. A High Surf Advisory (HSA) remains in effect along exposed north and west facing shores of Niihau, Kauai, Oahu, Molokai and the west facing shores of the Big Island. This advisory will likely remain in place, briefly expanding into north Maui, through Thursday night.
Small surf is expected along east facing shores this week as winds remain light. Surf along south facing shores should see a small boost today as a small south swell fills in through the end of the week.

HFO Watches/Warnings/Advisories

High Surf Advisory until 6 PM HST Thursday for Niihau, Kauai Leeward, Waianae Coast, Oahu North Shore, Kona, Kohala, Kauai North, Molokai Windward, Molokai North, Molokai West, Big Island South.
Small Craft Advisory until 10 AM HST Thursday for Maui County Windward Waters, Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Windward Waters, Big Island Leeward Waters.

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Data Courtesy of NOAA.gov