Hilo

Today: Mostly sunny with showers in the morning, then partly sunny with isolated showers in the afternoon. Highs 80 to 85 near the shore to 65 to 73 at 4000 feet. East winds up to 10 mph. Chance of rain 80 percent.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 63 to 70 near the shore to around 56 at 4000 feet. Northeast winds up to 10 mph shifting to the northwest after midnight. Chance of rain 50 percent.

Wednesday: Mostly sunny in the morning then becoming partly sunny. Scattered showers. Highs 81 to 86 near the shore to 65 to 73 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Kona

Today: Sunny in the morning, then mostly cloudy with isolated showers in the afternoon. Highs 82 to 89 near the shore to around 70 near 5000 feet. West winds up to 10 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy in the evening then becoming mostly clear. Isolated showers. Lows 69 to 74 near the shore to 50 to 55 near 5000 feet. Light winds. Chance of rain 20 percent.

Wednesday: Sunny in the morning, then mostly cloudy with isolated showers in the afternoon. Highs 82 to 89 near the shore to around 70 near 5000 feet. Northwest winds up to 10 mph. Chance of rain 20 percent.

Waimea

Today: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 68 to 88. East winds up to 15 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with scattered showers. Lows 62 to 68 near the shore to 54 to 62 near 3000 feet. East winds up to 10 mph. Chance of rain 40 percent.

Wednesday: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 68 to 88. East winds up to 15 mph. Chance of rain 40 percent.

Kohala

Today: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 68 to 88. East winds up to 15 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with scattered showers. Lows 62 to 68 near the shore to 54 to 62 near 3000 feet. East winds up to 10 mph. Chance of rain 40 percent.

Wednesday: Mostly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs 68 to 88. East winds up to 15 mph. Chance of rain 40 percent.

South Big Island

Today: Sunny in the morning, then mostly cloudy with scattered showers in the afternoon. Highs around 85 near the shore to around 68 near 5000 feet. East winds up to 15 mph. Chance of rain 40 percent.

Tonight: Mostly cloudy in the evening then becoming mostly clear. Lows around 72 near the shore to around 52 near 5000 feet. East winds up to 15 mph.

Wednesday: Sunny in the morning, then mostly cloudy with isolated showers in the afternoon. Highs around 85 near the shore to around 68 near 5000 feet. East winds up to 15 mph. Chance of rain 20 percent.

Puna

Today: Mostly sunny with showers in the morning, then partly sunny with isolated showers in the afternoon. Highs 80 to 85 near the shore to 65 to 73 at 4000 feet. East winds up to 10 mph. Chance of rain 80 percent.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 63 to 70 near the shore to around 56 at 4000 feet. Northeast winds up to 10 mph shifting to the northwest after midnight. Chance of rain 50 percent.

Wednesday: Mostly sunny in the morning then becoming partly sunny. Scattered showers. Highs 81 to 86 near the shore to 65 to 73 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Waikoloa

Today: Sunny in the morning, then partly sunny with isolated showers in the afternoon. Highs 81 to 89 near the shore to 67 to 75 above 4000 feet. Northwest winds up to 10 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Lows 69 to 74 near the shore to 49 to 56 above 4000 feet. East winds up to 10 mph in the evening becoming light.

Wednesday: Mostly sunny. Isolated showers in the afternoon. Highs 80 to 89 near the shore to 67 to 75 above 4000 feet. North winds up to 15 mph. Chance of rain 20 percent.

Detailed Forecast

Synopsis

Moderate trades will focus showers over windward area, mainly at night. Afternoon sea breezes may increase cloud cover across leeward areas. Drier air and increasing stability will spawn fewer showers from mid-week onward.

Discussion

There is little to no change in forecast philosophy from last evening. A weakened ridge north of the main Hawaiian Islands remains sufficiently strong to drive light to moderate trade flow across local waters this morning. Areas of increased moisture keep clouds and showers focused over Kauai and windward portions of the Big Island, but windward areas of Oahu, Molokai and Maui have isolated to scattered showers as well. With little to no wind flow change anticipated in the short term, expect today's cloud and shower pattern to be similar to yesterday's pattern.
Drier air north and northeast of the islands, along with mid- level ridging, will move over the eastern end of the state today, then build westward over the next 48 hours. This will limit rainfall intensity for the remainder of the week and will inhibit shower activity from drifting leeward at night.

Aviation

Trade winds will remain light to locally moderate over the next few days. Local scale afternoon sea breezes will build clouds and a few showers over mountain and island interior sections. Clouds and showers in the overnight to early morning hours will favor windward airfields. Mostly VFR conditions will prevail with only brief MVFR conditions possible in showers.
No AIRMETs in effect.

Marine

A weak ridge north of the islands will keep light to moderate trade winds in place through Wednesday, with localized land and sea breezes near the leeward coasts. A return of moderate to fresh trades is expected Thursday through early next week.
A combination of small background southeast and south swells will keep some small, and well below normal, surf in place along south facing shores during the next 7 days. Only small surf is expected along north facing shores during the next 7 days, with perhaps a small boost from a north swell Thursday and Friday, and a north- northeast swell over the weekend. Surf along east facing shores will remain well below normal during the next 7 days.

HFO Watches/Warnings/Advisories

None.

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Data Courtesy of NOAA.gov