Hawaii County Weather Forecast for April 23, 2024
Hilo
Today: Cloudy. Frequent showers early in the morning, then numerous showers in the late morning and afternoon. Highs 74 to 80 near the shore to 62 to 67 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 80 percent.
Tonight: Cloudy. Numerous showers in the evening, then frequent showers after midnight. Lows 64 to 69 near the shore to around 51 at 4000 feet. North winds up to 15 mph. Chance of rain 80 percent.
Wednesday: Cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 74 to 80 near the shore to 62 to 67 at 4000 feet. North winds up to 15 mph shifting to the northeast in the afternoon. Chance of rain 70 percent.
Kona
Today: Mostly sunny early in the morning then becoming mostly cloudy. Scattered showers in the late morning and afternoon. Highs around 81 near the shore to around 63 near 5000 feet. West winds up to 10 mph. Chance of rain 50 percent.
Tonight: Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows 67 to 72 near the shore to around 52 near 5000 feet. Light winds. Chance of rain 20 percent.
Wednesday: Mostly sunny in the morning, then mostly cloudy with scattered showers in the afternoon. Highs around 81 near the shore to around 63 near 5000 feet. West winds up to 10 mph. Chance of rain 40 percent.
Waimea
Today: Mostly cloudy. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 76 near the shore to 64 to 72 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.
Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 66 near the shore to 52 to 59 near 3000 feet. East winds 10 to 25 mph decreasing to up to 25 mph after midnight. Chance of rain 50 percent.
Wednesday: Partly sunny. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 76 near the shore to 64 to 72 near 3000 feet. East winds up to 25 mph increasing to 10 to 25 mph in the afternoon. Chance of rain 70 percent.
Kohala
Today: Mostly cloudy. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 76 near the shore to 64 to 72 near 3000 feet. East winds 10 to 25 mph. Chance of rain 70 percent.
Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 66 near the shore to 52 to 59 near 3000 feet. East winds 10 to 25 mph decreasing to up to 25 mph after midnight. Chance of rain 50 percent.
Wednesday: Partly sunny. Breezy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 76 near the shore to 64 to 72 near 3000 feet. East winds up to 25 mph increasing to 10 to 25 mph in the afternoon. Chance of rain 70 percent.
South Big Island
Today: Breezy. Mostly sunny early in the morning, then partly sunny with isolated showers in the late morning and afternoon. Highs around 81 near the shore to around 67 near 5000 feet. East winds up to 25 mph. Chance of rain 20 percent.
Tonight: Partly cloudy. Breezy. Isolated showers in the evening. Lows 65 to 71 near the shore to around 51 near 5000 feet. Northeast winds 10 to 25 mph. Chance of rain 20 percent.
Wednesday: Breezy. Mostly sunny in the morning, then partly sunny with isolated showers in the afternoon. Highs around 81 near the shore to around 67 near 5000 feet. East winds 10 to 25 mph. Chance of rain 20 percent.
Puna
Today: Cloudy. Frequent showers early in the morning, then numerous showers in the late morning and afternoon. Highs 74 to 80 near the shore to 62 to 67 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 80 percent.
Tonight: Cloudy. Numerous showers in the evening, then frequent showers after midnight. Lows 64 to 69 near the shore to around 51 at 4000 feet. North winds up to 15 mph. Chance of rain 80 percent.
Wednesday: Cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 74 to 80 near the shore to 62 to 67 at 4000 feet. North winds up to 15 mph shifting to the northeast in the afternoon. Chance of rain 70 percent.
Waikoloa
Today: Breezy. Mostly sunny with scattered showers early in the morning, then partly sunny with isolated showers in the late morning and afternoon. Highs around 83 near the shore to 64 to 69 above 4000 feet. Northeast winds up to 25 mph. Chance of rain 40 percent.
Tonight: Partly cloudy. Breezy. Isolated showers in the evening. Lows 67 to 72 near the shore to 48 to 55 above 4000 feet. Southeast winds up to 25 mph. Chance of rain 20 percent.
Wednesday: Sunny in the morning then becoming partly sunny. Breezy. Highs around 83 near the shore to 64 to 69 above 4000 feet. Northeast winds up to 25 mph.
Detailed Forecast
Synopsis
Breezy and showery trade wind conditions will continue through Thursday, with clouds and showers favoring windward and mauka locations. Trade winds may ease slightly this weekend as the ridge weakens to the north.
Discussion
Guidance remains in good agreement and depicts the wet trade wind pattern persisting through Thursday as bands of low-level moisture move through. The initial band that has moved in overnight has led to an increase in windward shower coverage, with some spilling over into leeward sections of the smaller islands. Observations at the gauges reflect this uptick in showers with accumulations reaching a quarter to three quarters of an inch with localized higher amounts above two inches over the past six hours. Expect this showery trend to persist through midweek, with the next band approaching from the northeast. The shower coverage should trend down by Friday as this second band moves out and some drier air moves in.
The breezy easterly trades may ease slightly next weekend as the ridge weakens to the north in response to deep low pressure developing far northwest of the state near Midway.
Aviation
Bands of clouds will bring a MVFR cigs/vsbys and SHRA over windward and mauka areas this morning. A few SHRA will make it to leeward sides with lowering cigs/vsbys as well.
AIRMET Sierra is in effect for mtn obsc for all islands.
AIRMET Tango is also in effect for moderate turb below 080 for S and W of all islands.
Marine
High pressure north of the state will slowly drift east and strengthen over the next few days, resulting in fresh to strong trade winds over the islands. A Small Craft Advisory remains in effect for higher winds through Wednesday covering most Hawaiian coastal waters from Oahu to Big Island.
Surf heights along all shores will remain below advisory thresholds through the weekend. A small, medium period northwest swell will arrive late Wednesday and continue through Saturday. Choppy, rough surf expected all week along east facing shores due to the trade winds. South facing shores will continue to see small background swell pulses through rest of the the week.
HFO Watches/Warnings/Advisories
Small Craft Advisory until 6 PM HST Wednesday for Oahu Leeward Waters, Kaiwi Channel, Maui County Windward Waters, Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
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Data Courtesy of NOAA.gov