Hawaii County Weather Forecast for June 9, 2024: Big Island Now

Hilo

Today: Mostly sunny with isolated showers. Highs around 84 near shore up to 69 to 74 at 4000 feet. Northeast winds gusting to 15 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 20 percent.

This evening: Mostly cloudy with scattered showers. Low around 68 near shore to around 54 at 4000 feet. The northeast wind is around 10 mph. Chance of rain 50 percent.

Monday: Partly sunny with scattered showers. Highs around 84 near shore up to 69 to 74 at 4000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Kona

Today: Mostly sunny in the morning, then partly sunny with isolated showers in the afternoon. Highs 82 to 87 near shore at around 69 near 5,000 feet. West winds can reach 10 mph. Chance of rain 20 percent.

This evening: Partly cloudy. Low 69 to 75 near shore to around 55 near 5,000 feet. Light winds.

Monday: Quite sunny. Isolated showers in the afternoon. Highs 82 to 87 near shore at around 69 near 5,000 feet. The west wind is blowing around 10 mph. Chance of rain 20 percent.

Waimea

Today: Quite sunny. Costs. Insulated showers in the morning. Highs around 82 near shore to 69 to 79 near 3000 feet. East winds can reach 20 mph. Chance of rain 20 percent.

This evening: Costs. partly cloudy with isolated showers. Low around 68 near shore to 56 to 62 near 3000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.

Monday: Quite sunny. Costs. Isolated showers in the morning, then scattered showers in the afternoon. Highs around 82 near shore to 69 to 79 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Kohala

Today: Quite sunny. Costs. Insulated showers in the morning. Highs around 82 near shore to 69 to 79 near 3000 feet. East winds can reach 20 mph. Chance of rain 20 percent.

This evening: Costs. partly cloudy with isolated showers. Low around 68 near shore to 56 to 62 near 3000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.

Monday: Quite sunny. Costs. Isolated showers in the morning, then scattered showers in the afternoon. Highs around 82 near shore to 69 to 79 near 3000 feet. East winds 10 to 20 mph. Chance of rain 50 percent.

Great South Island

Today: Quite sunny. Costs. Highs around 86 near shore to around 73 near 5,000 feet. East winds can reach 20 mph.

This evening: Generally clear. Costs. Low around 70 near shore to around 53 near 5000 feet. East winds 10 to 20 mph.

Monday: Sunny and windy. Highs around 86 near shore to around 73 near 5,000 feet. East winds 10 to 25 mph.

Puna

Today: Mostly sunny with isolated showers. Highs around 84 near shore up to 69 to 74 at 4000 feet. Northeast winds gusting to 15 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 20 percent.

This evening: Mostly cloudy with scattered showers. Low around 68 near shore to around 54 at 4000 feet. The northeast wind is around 10 mph. Chance of rain 50 percent.

Monday: Partly sunny with scattered showers. Highs around 84 near shore up to 69 to 74 at 4000 feet. East winds 10 to 15 mph. Chance of rain 50 percent.

Waikoloa

Today: Quite sunny. Highs around 86 near shore to 70 to 76 above 4,000 feet. Northeast winds can reach 15 mph.

This evening: Generally clear. Low 70 to 75 near shore to 51 to 58 above 4,000 feet. East winds 10 to 15 mph.

Monday: Sunny. Highs around 86 near shore to 70 to 76 above 4,000 feet. North winds 10 to 15 mph.

Synopsis

Moderate to windy trade winds will continue to strengthen through the middle of next week as high pressure slowly rebounds to our north. The rare commercial showers will favor the banks and windward slopes.

Discussion

Moderate trade winds persisted overnight, with locally windy conditions noted in the eastern channels, despite a weakened ridge to the north. The latest soundings showed a dry and stable air mass, thanks to strong ridges aloft, with less than an inch of PW and positive lifting index values. Steep inversions near 4,000 feet helped limit cloud development and precipitation, particularly away from upwind areas. Radar shows almost no shower activity within range.
Models show the ridge to the north will rebound over the forecast period as a troublesome mid-latitude trough lifts further north. Trade will continue to strengthen in local waters as the upper ridge moves north and east of the islands until early next week. Expect a trade wind weather pattern throughout the forecast period, with clouds and showers favoring windward areas. Rainfall totals will be low.

Aviation

Windy conditions will continue to gradually increase throughout the remainder of the day. With high pressure and dry air in place over the region, SHRA activity will be limited. A strong reversal will keep cigarettes low allowing for periods of MVFR conditions. Otherwise, VFR conditions should prevail.
No AIRMET currently in force.

Marine

Moderate to locally strong easterly trade winds will increase into a mild to strong range today and continue through much of the week as the surface ridge strengthens northward. This could lead to the extension of the small craft advisory to the windward waters of the Kaiwi Channel and Maui County by Monday. Indications suggest a potential weakness would form in the ridge northwest of the state next weekend, which could lead to moderate to cool east-southeast trading.
Surf along south facing coastlines will remain high throughout the week due to an active trend in our swell window near New Zealand. Overlapping swells over a long period, from south to south-southwest, are expected, with the next one starting to fill early this morning (maximum energy centered in the 18-22 second bands at buoys). Indications are that this swell peaks late at night through Monday. A decreasing trend is expected from Tuesday until mid-week, with mainly a mix of fading south-southwest swell and a small medium-period south-easterly swell. A new long-lasting south swell is expected to arrive overnight from Thursday to Friday, then peak late Friday and Saturday.
Surf along north-facing coastlines will remain slightly up through the first half of the week as small north to north-northwest pulses move through. The next northerly pulse is expected to occur Monday evening, with a small north-northwest swell arriving midweek Tuesday. A return to summer/flat conditions is likely later this week and into next weekend.
Surfing along east-facing coasts is expected to trend toward increasing later this week as currents establish locally and upstream in the eastern Pacific.

HFO Monitoring/Warnings/Advice

High Surf Advisory until 6:00 p.m. HST Monday for Niihau, Kauai Leeward, Waianae Coast, Kahoolawe, Maui Leeward West, Kona, Kauai South, East Honolulu, Honolulu Metro, Ewa Plain, Molokai West, Molokai Leeward South, Lanai Leeward , Lanai South, Maui Central Valley South, South Maui/Upcountry, South Haleakala, Big Island South, Big Island Southeast.
Small craft advisory until 6:00 a.m. HST Tuesday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Leeward Big Island Waters, and Southeast Big Island Waters.

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Data courtesy of NOAA.gov