Hawaii County Weather Forecast for August 06, 2022

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This day: Mostly cloudy with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs around 82 near shore at 65 to 72 at 4000 feet. East winds up to 10 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy with scattered showers. Lows of 64 to 71 near the coast around 57 to 4,000 feet. Northeast winds up to 10 mph shifting to the west after midnight. Chance of rain 50 percent.

Sunday: Partly sunny in the morning then mostly sunny. Scattered showers. Highs of 80 to 85 near shore at 65 to 74 at 4,000 feet. Northeast winds up to 15 mph. Chance of rain 40 percent.

cona

This day: Sunny with isolated showers early in the morning, then mostly sunny with scattered showers in the late morning and afternoon. High around 88 near the coast to around 71 near 5,000 feet. West winds up to 10 mph. Chance of rain 40 percent.

Tonight: Mostly cloudy with isolated showers in the evening, then mostly clear after midnight. Lows from 71 to 76 near the coast to 53 to 58 near 5,000 feet. Light winds. Chance of rain 20 percent.

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Sunday: Sunny in the morning, then cloudy with isolated showers in the afternoon. Highs around 87 near the coast to around 70 near 5000 feet. West winds up to 10 mph. Chance of rain 20 percent.

waimea

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This day: Partly sunny with scattered showers early in the morning, then mostly sunny with isolated showers in the late morning and afternoon. Highs of 67 to 88. East winds up to 15 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with scattered showers. Lows around 67 near the coast to 57 to 64 near 3000 feet. East winds up to 15 mph. Chance of rain 50 percent.

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

Kohala

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This day: Partly sunny with scattered showers early in the morning, then mostly sunny with isolated showers in the late morning and afternoon. Highs of 67 to 88. East winds up to 15 mph. Chance of rain 50 percent.

Tonight: Partly cloudy with scattered showers. Lows around 67 near the coast to 57 to 64 near 3000 feet. East winds up to 15 mph. Chance of rain 50 percent.

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

south big island

This day: Mainly sunny. Windy. Scattered showers in the late morning and afternoon. Highs around 85 near the coast to around 69 near 5000 feet. East winds up to 25 mph. Chance of rain 30 percent.

Tonight: Mostly cloudy at night then becoming mostly clear. Windy. Lows around 73 near the coast to around 53 near 5000 feet. Northeast winds up to 20 mph.

Sunday: Mainly sunny. Windy. Highs around 85 near the coast to around 70 near 5000 feet. East winds up to 20 mph.

Puna

This day: Mostly cloudy with scattered showers in the morning, then mostly sunny with isolated showers in the afternoon. Highs around 82 near shore at 65 to 72 at 4000 feet. East winds up to 10 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy with scattered showers. Lows of 64 to 71 near the coast around 57 to 4,000 feet. Northeast winds up to 10 mph shifting to the west after midnight. Chance of rain 50 percent.

Sunday: Partly sunny in the morning then mostly sunny. Scattered showers. Highs of 80 to 85 near shore at 65 to 74 at 4,000 feet. Northeast winds up to 15 mph. Chance of rain 40 percent.

Waikoloa

This day: Mainly sunny. Isolated showers in the late morning and afternoon. High from 83 to 90 near the coast to 67 to 75 above 4,000 feet. Northwest winds up to 10 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Lows from 71 to 76 near the coast to 51 to 59 above 4,000 feet. Southeast winds up to 10 mph.

Sunday: Sunny. High from 82 to 90 near the coast to 67 to 76 above 4,000 feet. North winds up to 15 mph.

Synopsis

A southeasterly wind will concentrate clouds and showers over the southeast-facing slopes of Maui County and the Big Island, while an afternoon sea breeze will bring inland clouds and showers to the western edge of the state. Trades return statewide tonight through early Sunday morning.

Discussion

Trades will gradually return over the next 18 to 24 hours as the shallow trough near Kauai exits the stage to the west at the same time the southern fringes of the Northeast Pacific high pressure head toward the islands. For Kauai and Oahu, continued light winds throughout the day will again give way to localized sea breezes, interior cloud development, and a few showers. Reductions to mid-level stability will occur as the resident batch of moisture centered in the south of the islands works through the area today. This, combined with an increase in boundary layer moisture, will offer the potential for a slightly larger convective response compared to yesterday. Over the eastern end of the state, building ESE winds will generate clouds and occasional showers on the east and southeast facing slopes.
As the trade winds set in early next week, the diffuse nature of the pressure gradient suggested by recent models puts the islands in a somewhat precarious position in terms of predicted confidence in the strength of said trade winds. While windy exchanges are indicated for much of the coming week, local gradient tightening appears to be more closely related to pressure drops in the tropics to the south and southeast of the islands, inherently carrying comparatively greater uncertainty. In any event, an appearance of an easterly trade wind will develop on Sunday and persist for most or all of the coming week, bringing a return to a more typical trade wind pattern. As noted in the discussion above, any additional pressures falling south of the area, such as those related to tropical development, would have the potential to give local winds another push up by mid-week.

Aviation

Land breezes have pushed much of the overnight clouds and rain offshore over the smaller islands. The trade wind flow will reestablish itself over the Big Island from the windward side this morning and spread across the rest of the state through tonight. Leeward areas over the western edge of the state may still experience localized sea breezes and clouds/showers inland this afternoon as the trade winds slowly return. Some bands of rainy low clouds will continue to move across the eastern and southeastern portions of the Big Island and Maui this morning, before dissipating in the afternoon. Shower activity will return to a more typical windward and mauka approach tonight.

Marine

A shallow trough to the N of the area will gradually move north and weaken over the next several days, allowing surface high pressure in the distant N to exert its influence on our winds again. As a result, east to southeast winds will increase from east to west along the island chain. Winds will remain on the lighter side over Kauai and Oahu today, but are expected to pick up over the waters off Maui and the Big Island, and a Small Craft Advisory (SCA) has been issued in anticipation that winds will pick up. Winds are likely to continue to gradually pick up through the middle of next week as the high temperature approaches and a possible tropical disturbance passes further S of the islands.
A small significant swell is anticipated through next week. A small short period NE swell will continue today and taper off tomorrow. Rising trade winds will bring a gradual increase in short period waves to the East Coasts early next week. A small long period S swell could arrive in the middle of next week, and a smaller shorter period SSE swell is expected over the next few days.

HFO Watches/Warnings/Warnings

Small Craft Advisory until 6 a.m. HST Monday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, and Big Island Southeast Waters.
Small Craft Advisory until 6 a.m. HST Sunday for the windward waters of Maui County and the windward waters of the Big Island.

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Data courtesy of NOAA.gov

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