Hawaii County climate forecast is June 8, 2021

Hilo

Today: Showers likely, mostly before noon. Partly sunny, with highs close to 83. Calm winds blowing 5 to 8 miles per hour from east-northeast in the morning. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely. Mostly cloudy, with a low of about 67. West wind about 11 km / h. The probability of precipitation is 70%. New rainfall levels of less than a tenth of an inch possible.

Wednesday: Showers likely, mostly before noon. Partly sunny with highs close to 83. West winds 5 to 8 miles per hour turning east-northeast in the morning. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Kona

Today: A few showers from 1 p.m. Partly sunny with a high near 84. Calm winds blowing west from 5 to 9 miles per hour in the afternoon. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers, mostly before 1am. Mostly cloudy, with a low of about 70. East wind about 8 km / h. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

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Wednesday: Individual showers before 7 a.m., then isolated showers after 1 p.m. Partly sunny with a high near 85. East winds 5 to 9 mph turning west in the afternoon. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Waimea

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Today: a few showers. Partly sunny, with a peak near 77. Windy, with a northeasterly wind of 20 to 40 km / h, with gusts of up to 60 km / h. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Tonight: A few showers. Mostly cloudy with a minimum of about 57. Windy, with an easterly wind at about 25 mph, with gusts of up to 35 mph. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Wednesday: A few showers. Partly sunny, with a peak near 77. Windy, with a northeasterly wind of 16 to 40 km / h, with gusts of up to 60 km / h. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Kohala

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Today: Showers likely, mostly before noon. Mostly cloudy with a high near 68. Windy, easterly winds 23 to 45 mph, with gusts up to 41 mph. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely. Mostly cloudy, with a low of about 51. Windy, with an easterly wind of about 38 km / h, with gusts of up to 54 km / h. The probability of precipitation is 70%. New rainfall levels of less than a tenth of an inch possible.

Wednesday: Showers likely, mostly before noon. Partly sunny, with a high near 69. Windy, with easterly winds 24 to 45 mph, with gusts up to 41 mph. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Southern big island

Today: single showers. Mostly sunny, with a high near 81. Windy, with an easterly wind of 26 to 45 mph, with gusts of up to 60 mph. The probability of precipitation is 20%.

Tonight: A few showers. Partly cloudy, with a low of around 69. Windy, with an easterly wind of around 45 km / h, with gusts of up to 60 km / h. The probability of precipitation is 20%.

Wednesday: single showers. Mostly sunny, with a peak near 80. Windy, with an easterly wind of 24 to 45 km / h, with gusts of up to 60 km / h. The probability of precipitation is 20%.

Feedback

Today: Showers likely, mostly before noon. Partly sunny, with a peak near 79. Northeast winds 8 to 22 km / h, with gusts of up to 30 km / h. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely. Mostly cloudy, with a low of about 63. Northeast wind about 21 km / h. The probability of precipitation is 70%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Wednesday: Showers likely, mostly before noon. Partly sunny, with a peak near 78. Northeast wind around 22 km / h, with gusts of up to 18 km / h. The probability of precipitation is 60%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Waikoloa

Today: A few showers after noon. Mostly sunny, with a peak near 83. Windy, with a northeast wind of 19 to 38 km / h, which decreases to 12 to 12 km / h in the afternoon. Winds can blow up to 34 miles per hour. The probability of precipitation is 20%.

Tonight: A few showers before midnight. Partly cloudy, with a low of about 68. East-southeast wind about 11 km / h. The probability of precipitation is 20%.

Wednesday: A few showers after noon. Mostly sunny, peaking near 84. Windy, with northeasterly winds of 19 to 24 mph, decreasing to 10 to 11 mph. Winds can blow up to 34 miles per hour. The probability of precipitation is 20%.

Summary

A high pressure ridge north of the islands is forecast to hold moderate to airy trade winds with short passing windward and mountain showers until Friday. The ridge will weaken from late Friday through the weekend as a dissolving cold front approaches from the north. Lighter wind speed trends and a slight decrease in shower activity are expected this weekend.

discussion

The large-scale weather pattern remains the same this morning, as there is a large high pressure ridge north of the region with an almost stationary low pressure system west-northwest of the islands near the date line. Satellite images show stable clouds that drift into each island with the trade winds. The local radar shows brief passing showers drifting through the islands, mostly affecting windward and mountain sections. Drier conditions are observed over the leeward areas.
The great subtropical ridge north of the state will continue to produce moderate to breezy trade winds through Friday. A combination of breezy surface winds and passing disturbances at medium altitude will keep the forecasts short, transient showers favoring windward and mountainous areas. Daily rainfall remains low in most locations.
The weather conditions change slightly from Friday to the weekend as a dissolving cold front approaches the islands from the north. This frontal trough will break the high pressure ridge north of the islands and reduce the trade winds to the light to moderate range. The shower activity will also be a little less this weekend as the wind speeds decrease.
The high pressure ridge builds up again in the north of the region on late Sunday to Monday with moderate trade winds in the forecast. A cloud line associated with a dissipated cold front will linger north of the main Hawaiian islands. The latest long-distance projections continue to suggest that with this feature, clouds and showers will remain north of Kauai with little impact on our local island weather.

aviation

High pressure in the north of the state will keep moderate to stormy trade winds in place for the next few days. Only a very small change in the weather pattern is expected, with isolated showers favoring windward slopes and coasts, and an isolated shower reaching lee areas from time to time. Short MVFR cigs / Vsbys are possible in windward areas, especially at night and early in the morning, but VFR conditions should prevail for the most part.
AIRMET SIERRA is in effect for mountain darkening over windward stretches of Kauai, Oahu, Molokai, Maui, and the Big Island. Conditions should improve this morning.
AIRMET TANGO remains in effect for moderate turbulence at a low level above and in the wind direction of the terrain of all islands. This AIRMET will probably continue in the next few days.

marine

The tight pressure gradient created by the high pressure in the northeast of the islands will sustain these sustained moderate to fresh trade winds throughout the working week. The Small Craft Advisory now has a slight increase in area-wide trade to more persistent fresh to locally strong magnitudes within the canals and bays for all coastal waters (except for the windward waters of Kauai) by Wednesday afternoon.
The recent moderate southwest to south swell has subsided, but a number of low background southwest south swells sailing over the next few days will remain slightly below normal surf on many south facing coastlines. The north-facing bank surf will remain almost flat, with some spots benefiting from a trade wind wave for the remainder of the week. The only surf noteworthy will be along the exposed east coast. Sustained moderate to locally heavy trade above and upstream of the islands will result in higher wind wave swell, creating choppy conditions on the east coast and close to average summer surf heights.

HFO clocks / warnings / notices Ad

Small boat advice until Wednesday 6:00 p.m. HST for Kauai Northwest Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters, Kaiwi Channel, Maui County Windward Waters, Maui County Leeward Waters, Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Windward Waters, Big Island Leeward Waters, Big Island Southeast Waters.

Data courtesy of NOAA.gov

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