Hilo

Tonight: Mostly cloudy with numerous showers. Lows 64 to 70 near the shore to 51 to 58 at 4000 feet. North winds up to 15 mph. Chance of rain 70 percent.

Tuesday: Partly sunny with numerous showers in the morning, then mostly sunny with scattered showers in the afternoon. Highs 79 to 85 near the shore to 65 to 70 at 4000 feet. Northeast winds 10 to 15 mph decreasing to up to 15 mph in the afternoon. Chance of rain 70 percent.

Tuesday Night: Mostly cloudy with numerous showers. Lows 63 to 69 near the shore to 50 to 58 at 4000 feet. Northeast winds up to 10 mph. Chance of rain 70 percent.

Kona

Tonight: Mostly cloudy with scattered showers in the evening, then partly cloudy with isolated showers after midnight. Lows around 72 near the shore to 48 to 53 near 5000 feet. Light winds. Chance of rain 50 percent.

Tuesday: Sunny in the morning, then cloudy with scattered showers in the afternoon. Highs around 85 near the shore to around 68 near 5000 feet. Light winds. Chance of rain 50 percent.

Tuesday Night: Mostly cloudy with scattered showers in the evening, then partly cloudy with isolated showers after midnight. Lows around 73 near the shore to 48 to 53 near 5000 feet. Light winds. Chance of rain 50 percent.

Waimea

Tonight: Breezy. Mostly cloudy with scattered showers. Lows 63 to 72 near the shore to 55 to 62 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Tuesday: Mostly sunny. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 80 near the shore to 71 to 79 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Tuesday Night: Partly cloudy in the evening then becoming mostly cloudy. Scattered showers. Lows 62 to 71 near the shore to 54 to 62 near 3000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Kohala

Tonight: Breezy. Mostly cloudy with scattered showers. Lows 63 to 72 near the shore to 55 to 62 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Tuesday: Mostly sunny. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 80 near the shore to 71 to 79 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Tuesday Night: Partly cloudy in the evening then becoming mostly cloudy. Scattered showers. Lows 62 to 71 near the shore to 54 to 62 near 3000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

South Big Island

Tonight: Breezy. Mostly cloudy with isolated showers in the evening, then mostly clear after midnight. Lows around 73 near the shore to around 52 near 5000 feet. Northeast winds up to 20 mph shifting to the east 10 to 20 mph after midnight. Chance of rain 20 percent.

Tuesday: Mostly sunny. Breezy. Scattered showers in the afternoon. Highs around 86 near the shore to around 67 near 5000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Tuesday Night: Partly cloudy. Breezy. Isolated showers in the evening. Lows around 73 near the shore to around 52 near 5000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.

Puna

Tonight: Mostly cloudy with numerous showers. Lows 64 to 70 near the shore to 51 to 58 at 4000 feet. North winds up to 15 mph. Chance of rain 70 percent.

Tuesday: Partly sunny with numerous showers in the morning, then mostly sunny with scattered showers in the afternoon. Highs 79 to 85 near the shore to 65 to 70 at 4000 feet. Northeast winds 10 to 15 mph decreasing to up to 15 mph in the afternoon. Chance of rain 70 percent.

Tuesday Night: Mostly cloudy with numerous showers. Lows 63 to 69 near the shore to 50 to 58 at 4000 feet. Northeast winds up to 10 mph. Chance of rain 70 percent.

Waikoloa

Tonight: Mostly clear. Breezy. Lows around 73 near the shore to 50 to 55 above 4000 feet. East winds up to 20 mph.

Tuesday: Mostly sunny. Scattered showers in the afternoon. Highs 84 to 90 near the shore to 65 to 74 above 4000 feet. North winds up to 10 mph. Chance of rain 50 percent.

Tuesday Night: Partly cloudy. Isolated showers in the evening. Lows around 73 near the shore to 50 to 55 above 4000 feet. Northeast winds up to 10 mph. Chance of rain 20 percent.

Detailed Forecast

Synopsis

Breezy trades will persist through Tuesday, ease slightly Wednesday through Friday, then become breezy again during the weekend. Clouds and showers will be focused over windward and mauka areas through the week, especially during the overnight and early morning hours.

Discussion

Stable June weather will persist through the week, with periods of locally breezy trade winds focusing showers over windward and mauka areas. Broad surface high pressure far north of the state will maintain trades near current strength through at least Tuesday. Winds will ease slightly on Wednesday as the high shifts to the northeast, followed by a likely increase again during the weekend as the high moves closer to the state. A mid-level ridge overhead will maintain stable conditions, and pockets of moisture in the trade wind flow will focus showers along windward areas, especially at night. A diffuse band of shallow moisture will pass over the islands late this afternoon through the evening and produce a boost in windward showers, with top sites likely receiving over a half inch of rain. Otherwise, no organized areas of moisture are noted for the next few days. Aside from a few passing showers tonight, leeward areas from Kauai to Maui will be rather dry, and the Kona slopes of the Big Island will continue to experience scattered showers each afternoon. High clouds over the area will dissipate tonight as an upper-level low to the west of Kauai is pushed away by a strengthening ridge aloft.

Aviation

Stable, breezy trades deliver clouds and showers mainly to windward and mauka zones through the period. VFR prevails through today with patchy MVFR possible within any showers. A shower band lingering offshore threatens to bring more widespread MVFR potential tonight.
AIRMET Tango remains in effect for low-level lee turb.
AIRMET Sierra for mountain obscuration may be needed for select windward zones overnight.

Marine

High pressure north of the state will drive trades through the rest of the week. A slight weakening trend in the winds is expected as the high moves eastward. A Small Craft Advisory (SCA) for the windier waters and channels near Maui and the Big Island goes through 6 AM HST Wednesday with a likely extension.
A series of small, long-period, south swells will help boost surf heights along south facing shores though the week. The current south swell will decline through Tuesday followed by another small south swell from Wednesday into Thursday.
Rough and choppy surf along east facing shores will continue this week. Surf will remain nearly flat along north facing shores throughout the forecast period.

HFO Watches/Warnings/Advisories

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

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Data Courtesy of NOAA.gov