Weather Forecast

Hawaii County Weather Forecast for February 29, 2024

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Photo Credit: James Grenz

Hilo

Today: Mostly cloudy. Occasional showers in the morning, then showers likely in the afternoon. Highs around 76 near the shore to 64 to 69 at 4000 feet. Northeast winds up to 15 mph shifting to the east in the afternoon. Chance of rain 90 percent.

Tonight: Mostly cloudy with occasional showers. Lows around 63 near the shore to around 49 at 4000 feet. East winds up to 10 mph. Chance of rain 90 percent.

Friday: Cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 75 near the shore to 63 to 68 at 4000 feet. Northeast winds up to 10 mph. Chance of rain 70 percent.

Kona

Today: Partly sunny. Scattered showers in the afternoon. Highs around 80 near the shore to around 70 near 5000 feet. West winds up to 10 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy. Scattered showers in the evening, then isolated showers after midnight. Lows 63 to 68 near the shore to around 50 near 5000 feet. Light winds. Chance of rain 50 percent.

ARTICLE CONTINUES BELOW AD
ARTICLE CONTINUES BELOW AD

Friday: Partly sunny. Scattered showers in the afternoon. Highs around 79 near the shore to around 69 near 5000 feet. East winds up to 10 mph shifting to the west in the afternoon. Chance of rain 40 percent.

Waimea

Today: Partly sunny. Breezy. Occasional showers in the morning, then showers likely in the afternoon. Highs 63 to 79. East winds up to 25 mph increasing to 15 to 25 mph in the afternoon. Chance of rain 90 percent.

Tonight: Mostly cloudy. Breezy. Showers likely in the evening, then occasional showers after midnight. Lows around 62 near the shore to 48 to 56 near 3000 feet. East winds 10 to 20 mph. Chance of rain 90 percent.

Friday: Breezy. Mostly cloudy with scattered showers. Highs 62 to 78. East winds 10 to 20 mph. Chance of rain 50 percent.

Kohala

Today: Partly sunny. Breezy. Occasional showers in the morning, then showers likely in the afternoon. Highs 63 to 79. East winds up to 25 mph increasing to 15 to 25 mph in the afternoon. Chance of rain 90 percent.

ARTICLE CONTINUES BELOW AD

Tonight: Mostly cloudy. Breezy. Showers likely in the evening, then occasional showers after midnight. Lows around 62 near the shore to 48 to 56 near 3000 feet. East winds 10 to 20 mph. Chance of rain 90 percent.

Friday: Breezy. Mostly cloudy with scattered showers. Highs 62 to 78. East winds 10 to 20 mph. Chance of rain 50 percent.

South Big Island

Today: Partly sunny. Breezy. Isolated showers in the afternoon. Highs around 81 near the shore to around 71 near 5000 feet. East winds 10 to 25 mph. Chance of rain 20 percent.

Tonight: Mostly cloudy. Breezy. Isolated showers in the evening. Lows around 65 near the shore to around 49 near 5000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.

Friday: Partly sunny. Breezy. Isolated showers in the afternoon. Highs around 80 near the shore to around 70 near 5000 feet. East winds 10 to 20 mph. Chance of rain 20 percent.

Puna

ARTICLE CONTINUES BELOW AD

Today: Mostly cloudy. Occasional showers in the morning, then showers likely in the afternoon. Highs around 76 near the shore to 64 to 69 at 4000 feet. Northeast winds up to 15 mph shifting to the east in the afternoon. Chance of rain 90 percent.

Tonight: Mostly cloudy with occasional showers. Lows around 63 near the shore to around 49 at 4000 feet. East winds up to 10 mph. Chance of rain 90 percent.

Friday: Cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs around 75 near the shore to 63 to 68 at 4000 feet. Northeast winds up to 10 mph. Chance of rain 70 percent.

Waikoloa

Today: Partly sunny. Breezy. Isolated showers in the afternoon. Highs around 80 near the shore to 65 to 72 above 4000 feet. East winds up to 25 mph shifting to the north in the afternoon. Chance of rain 20 percent.

Tonight: Mostly cloudy with isolated showers. Lows around 67 near the shore to 45 to 53 above 4000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Friday: Mostly sunny in the morning then becoming partly sunny. Highs around 79 near the shore to 64 to 71 above 4000 feet. East winds 10 to 15 mph shifting to the north in the afternoon.

Detailed Forecast

Synopsis

Trade winds will prevail through the forecast period, remaining breezy through the weekend and potentially strengthening early next week. Clouds and showers will favor windward and mauka areas, with showers becoming enhanced at times as upper troughs pass through.

Discussion

Breezy trade winds will persist through the weekend as a strong high far north of the islands moves slowly southeast and gradually weakens by Saturday. A new high will build northwest and north of the area, supporting breezy to locally strong trade winds well into next week. Upper troughing will prevail into next week, and the overall pattern will be fairly wet, especially for windward areas. Instability provided by upper troughing will enhance showers from time to time. A few showers may push leeward on the breezy trades.
Models show an upper trough will move over the islands today before lifting northeast of the islands Friday night and Saturday. Another upper trough will develop Sunday into Tuesday, potentially forming a closed low over the islands. If this low were to develop, it would be slow-moving, with associated instability lingering through the week. A potential exists for a few thunderstorms Sunday through Tuesday. However, confidence is too low to include them in the gridded database. Expect continued high cloud coverage into next week in association with the upper troughs.

Aviation

Breezy trade winds will continue for the foreseeable future. Clouds and showers will continue to favor windward and mauka areas, bringing periods of MVFR cigs/vsbys as bands of showers move through.
AIRMET Sierra remains in effect for mountain obscuration over windward areas. Conditions should improve in most areas around daybreak, but may linger through the morning hours on Kauai.
AIRMET Tango remains in effect for moderate turbulence over and downwind of the terrain of all islands. This AIRMET will likely continue through much of the next week.
AIRMET Tango is also in effect for moderate upper level turbulence from Oahu eastward to the Big Island. Conditions should improve from Maui westward by daybreak, but may linger through the morning hours over the Big Island.

Marine

Strong surface high pressure located far north of the main Hawaiian Islands will move southeast closer to the state over the next several days, maintaining fresh to strong trades throughout this period. Due to the strong trades, a Small Craft Advisory (SCA) remains in effect through today for all coastal waters. The SCA has been pulled back after today, for mainly the typically windier waters around Maui County, the Big Island, and the Kaiwi channel due to the fresh to locally strong trades continuing through Friday. The potential to have all the zones added back into the SCA may present itself this weekend as the high stalls northeast of the state.
Surf along exposed east facing shores will remain rough through the rest of the week due to choppy wind waves. North facing shores will remain small through tonight before an upward trend is expected Friday afternoon through the weekend due to a combination of north- northeast and west- northwest swells. The north- northeast swell will fill in Friday afternoon, then peak over the weekend. The west- northwest swell is forecast to build down the island chain on Saturday, producing surf which will peak near High Surf Advisory (HSA) thresholds across exposed north and west facing shores late Sunday and Sunday night. Surf along south facing shores will see an upward trend this afternoon as a small, long- period south- southwest swell arrives. This swell will peak late Friday into Saturday, then ease Sunday.

HFO Watches/Warnings/Advisories

Small Craft Advisory until 6 PM HST this evening for Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters, Maui County Windward Waters, Maui County Leeward Waters, Big Island Windward Waters.
Small Craft Advisory until 6 PM HST Friday for Kaiwi Channel, Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.

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Data Courtesy of NOAA.gov

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