Weather Forecast

Hawaii County Weather Forecast for December 11, 2021

December 11, 2021, 7:15 AM HST
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Hilo

Today: Mostly cloudy. Showers likely in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to 66 to 71 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 70 percent.

Tonight: Mostly cloudy. Showers likely in the evening, then frequent showers after midnight. Lows 65 to 72 near the shore to around 54 at 4000 feet. Northwest winds up to 15 mph. Chance of rain 80 percent.

Sunday: Mostly cloudy. Frequent showers in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to 66 to 71 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 80 percent.

Kona

Today: Mostly sunny with isolated showers in the morning, then mostly cloudy with scattered showers in the afternoon. Highs 79 to 84 near the shore to around 66 near 5000 feet. Light winds. Chance of rain 40 percent.

Tonight: Mostly cloudy in the evening then becoming mostly clear. Isolated showers. Lows around 71 near the shore to around 54 near 5000 feet. Light winds. Chance of rain 20 percent.

ARTICLE CONTINUES BELOW AD

Sunday: Sunny with isolated showers in the morning, then partly sunny with scattered showers in the afternoon. Highs 79 to 84 near the shore to around 66 near 5000 feet. West winds up to 10 mph. Chance of rain 50 percent.

Waimea

ARTICLE CONTINUES BELOW AD

Today: Breezy. Partly sunny with scattered showers. Highs around 79 near the shore to 66 to 76 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 68 near the shore to 54 to 62 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Sunday: Breezy. Partly sunny with scattered showers. Highs around 79 near the shore to 66 to 76 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Kohala

ARTICLE CONTINUES BELOW AD

Today: Breezy. Partly sunny with scattered showers. Highs around 79 near the shore to 66 to 76 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Tonight: Breezy. Mostly cloudy with scattered showers. Lows around 68 near the shore to 54 to 62 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

Sunday: Breezy. Partly sunny with scattered showers. Highs around 79 near the shore to 66 to 76 near 3000 feet. East winds 10 to 25 mph. Chance of rain 50 percent.

South Big Island

Today: Breezy. Mostly sunny in the morning, then partly sunny with isolated showers in the afternoon. Highs around 83 near the shore to around 70 near 5000 feet. East winds 10 to 25 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Isolated showers in the evening. Lows around 71 near the shore to around 54 near 5000 feet. Northeast winds 10 to 15 mph. Chance of rain 20 percent.

Sunday: Sunny and breezy. Isolated showers in the afternoon. Highs around 83 near the shore to around 70 near 5000 feet. Northeast winds up to 25 mph shifting to the east 10 to 25 mph in the afternoon. Chance of rain 20 percent.

Puna

Today: Mostly cloudy. Showers likely in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to 66 to 71 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 70 percent.

Tonight: Mostly cloudy. Showers likely in the evening, then frequent showers after midnight. Lows 65 to 72 near the shore to around 54 at 4000 feet. Northwest winds up to 15 mph. Chance of rain 80 percent.

Sunday: Mostly cloudy. Frequent showers in the morning, then scattered showers in the afternoon. Highs around 81 near the shore to 66 to 71 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 80 percent.

Waikoloa

Today: Breezy. Sunny with isolated showers in the morning, then partly sunny in the afternoon. Highs around 83 near the shore to 67 to 73 above 4000 feet. Northeast winds up to 25 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Breezy. Isolated showers in the evening. Lows around 71 near the shore to 49 to 59 above 4000 feet. Southeast winds up to 20 mph. Chance of rain 20 percent.

Sunday: Sunny and windy. Isolated showers in the afternoon. Highs around 83 near the shore to 67 to 73 above 4000 feet. Northeast winds up to 30 mph. Chance of rain 20 percent.

Detailed Forecast

Synopsis

Breezy easterly trade winds will continue through the weekend, with clouds and showers favoring windward and mauka areas at night and during the morning hours. A band of moisture and strong northeast winds associated with a cold front moving into the area could lead to a wet and windy pattern for the first half of next week.

Discussion

Guidance remains persistent and shows our stable trade wind pattern holding through the weekend as high pressure builds to our north. Expect brief windward and mauka showers, with light rainfall totals, as pockets of moisture move through. Trades will become locally windy as the pressure gradient remains tight, and will near the Wind Advisory threshold for windier locations in Maui County and the Big Island.
The strong trades will continue early next week as a cold front approaches and moves into the area from the north northeast. Strong winds, combined with moisture accompanying the front, will increase shower coverage Monday night through midweek. These winds will likely carry some showers into leeward areas, especially overnight through the morning periods.

Aviation

High pressure north of the state will help to generate breezy to locally windy easterly flow across the islands through the forecast period. Thus, scattered to occasional showers will mainly affect windward areas, likely bringing periods of MVFR ceilings and visibility. Partly cloudy skies with VFR conditions expected along leeward areas.
AIRMET TANGO remains in effect below 7000 feet over and immediately south through west of all mountains due to tempo moderate turbulence.
AIRMET SIERRA has been issued for north through east sections of Oahu and Maui above 2000 feet due to tempo mountain obscuration from clouds and showers.

Marine

Little change in the forecast with the morning package. Moderate to breezy trade winds will persist through much of the upcoming week. The Small Craft Advisory (SCA) is currently in effect for the typical windier waters near Maui County and the Big Island through Sunday night. An overnight ASCAT pass only clipped the eastern end of the state, but confirmed the presence of SCA near South Point. Expect the SCA to be extended into the new work week, and likely expanded to additional areas due to increasing winds and seas.
The current small north-northwest swell is expected to maintain small surf along exposed north and west facing shores this weekend. The forecast guidance continues to indicate that a new long-period north swell will likely begin to spread down over the area starting late Sunday night or early Monday morning. This swell will gradually build, and may cause surf to eventually reach the High Surf Advisory threshold along most north facing shores late Monday night into Tuesday. This will also bring SCA level seas (in excess of 10 feet) to exposed coastal waters. The locally strong trade winds in the vicinity and upstream of the islands will produce slightly elevated, rough surf along east facing shores through early next week. Small background surf along south facing shores is expected to continue to gradually lower into this weekend.

HFO Watches/Warnings/Advisories

Small Craft Advisory until 6 AM HST Monday for 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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