Hawaii County climate forecast is June 27, 2021

Hilo

Today: a few showers. Partly sunny, with a high close to 83. Calm wind at 5 to 11 km / h from the east. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers. Mostly cloudy, with a low of around 66. Calm wind that blows from the west at around 8 km / h after midnight. The probability of precipitation is 40%. New rainfall levels of less than a tenth of an inch possible.

Monday: A few showers, mostly before noon. Mostly sunny with a high near 83. East-northeast winds 5 to 11 mph that become calm in the afternoon. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Kona

Today: A few showers after noon. Partly sunny with a high near 79. North-northeast winds at about 8 miles per hour turning west-northwest in the morning. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers, mostly before midnight. Partly cloudy with a minimum of around 65. West-northwest winds 7 to 9 mph eastwards in the evening. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

THE ARTICLE CONTINUES BELOW THE ADVERT

Monday: A few showers after noon. Mostly sunny with a high near 79. East-northeast winds 5 to 9 mph that become calm in the afternoon. The probability of precipitation is 20%.

Waimea

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: a few showers. Partly sunny, with a peak near 78. Northeast winds 10 to 23 km / h, with gusts of up to 32 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 low of around 58. Northeast winds 11 to 13 mph. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Monday: A few showers, mostly before 7am. Mostly sunny, with a peak near 78. Northeast winds 11 to 23 km / h, with gusts of up to 18 km / h. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Kohala

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: a few showers. Partly sunny, with highs near 64. East winds 8 to 11 miles per hour. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers. Partly cloudy, with a low of about 53. East winds 7-10 mph. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Monday: A few showers, mostly before noon. Partly sunny, with highs near 64. East winds 8 to 21 mph. The probability of precipitation is 30%.

Southern big island

Today: single showers. Mostly sunny, with a high near 84. Windy, with easterly winds of 16 to 21 mph, with gusts of up to 40 mph. The probability of precipitation is 20%.

Tonight: A few showers before midnight. Partly cloudy, with a low point around 74. Windy, with an east-northeast wind of 20 to 35 km / h, with gusts of up to 45 km / h. The probability of precipitation is 20%.

Monday: Sunny, with a high near 84. Windy, with an easterly wind of 15 to 21 mph, with gusts of up to 42 mph.

Feedback

Today: a few showers. Partly sunny with a high near 82. West-northwest winds 6 to 10 mph turning east-northeast in the afternoon. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers. Mostly cloudy with a low of about 64. East northeast winds 5 to 9 mph turning northwest after midnight. The probability of precipitation is 40%. New rainfall levels of less than a tenth of an inch possible.

Monday: A few showers. Mostly sunny, peaking near 82. Northwest winds 5 to 9 miles per hour turning east-northeast in the afternoon. The probability of precipitation is 40%. New rainfall levels of less than a tenth of an inch possible.

Waikoloa

Today: A few showers after noon. Mostly sunny, with a peak near 84. Light and changeable wind that blows in the afternoon from west-northwest between 5 and 11 km / h. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers before midnight. Partly cloudy with a low of about 66. Light and changeable winds blowing 5 to 9 miles per hour from east-southeast after midnight. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Monday: A few showers after noon. Mostly sunny, with a high near 84. East-northeast winds 5 to 10 mph that become light and changeable in the afternoon. The probability of precipitation is 20%.

Summary

Light to moderate trades will last through Tuesday, with local land and sea breezes developing in the more sheltered void areas. A couple of bands of moisture will pull through today and Tuesday, causing a slight increase in showers in both windward and leeward areas, with fairly dry conditions expected across the country on Monday. Trades will rise again to moderate and locally breezy levels Tuesday night through next weekend, and this should bring a more typical windward and mauka-focused shower pattern with it, with an occasional shower going into lee areas from time to time.

discussion

Currently, a high pressure ridge is on the surface about 250 miles north of Kauai and extends to an altitude of 1022 mb in the far northeast. There is now a near-stationary front about 320 miles northwest of Kauai. The resulting incline remains loose across the islands, with easy to locally moderate drives in most windward areas and land breezes in leeward areas and throughout Kauai. Infrared satellite images show partially to mostly cloudy skies over the islands, with cloud cover most commonly over the windward areas of Oahu eastward and over the leeward stretches of the Big Island. Radar images show isolated showers in the direction of the wind and even a few isolated showers from Oahu eastwards to the Big Island, with rain-free conditions over Kauai. The top short-term concerns revolve around the likelihood of rain and trade wind trends over the next few days.
The trade winds will be trending slightly upwards today through Tuesday as the high pressure ridge slowly lifts to the northwest and further away from the islands. The journeys will likely remain easy enough during this time that local ocean and land winds will occur in the more sheltered void areas. The front northwest of the islands will dissolve Tuesday night and Wednesday, allowing the ridge axis northwest of the islands to make greater progress. This will bring a return of moderate to locally breezy trade winds that will last until next weekend.
As for the remaining weather details, a band of moisture will spread westward across the island today, bringing scattered showers to the windward areas, with local ocean breezes also bringing some showers to the lee areas during the afternoon and early evening hours. Many areas will dry out pretty well tonight, although a few showers upwind are still possible, as well as lee near the Big Island coast. However, the band of moisture will move through Kauai tonight, so higher shower coverage is anticipated here.
A fairly dry trade wind pattern is expected across the entire chain of islands on Monday and Monday evening, with an increase in the trade winds developing in the later Monday night as another band of moisture moves in from the east. This moisture band will shift east across the islands on Tuesday and bring scattered showers to the windward areas, as well as an increase in heat-related showers over the lee areas during the day. A more typical trade wind shower pattern appears to continue Tuesday night and last until the next weekend, with showers favoring windward and mauka areas mainly at night and in the early hours of the morning and an occasional shower reaching leeward areas from time to time.

aviation

Light trade flows will allow isolated showers along the windward areas to continue until this morning. The development of the sea breeze this afternoon will help to shift the development of the showers towards the interior of the islands. This activity may involve short periods of MVFR caps and visibility.
No AIRMETs are currently in force.

marine

Over the next few days, a high pressure ridge will build up and slowly rise to the northwest of the islands, causing the trade winds to slowly rise in the region. Light to moderate trade winds will intensify into the moderate to strong range starting Tuesday night, with the strongest winds expected in the typically windier waters around Maui County and the Big Island.
The current northwest swell will gradually subside over the next few days. Another small northwest swell is possible towards the end of the week. A number of small south and south-east swells are expected throughout the forecast period, with a slightly larger south swell possible on late Tuesday and Wednesday. The surf will remain low along the east-facing coasts for the first half of the week as there are no significant trade winds over and against the wind. The surf heights for east-facing coasts can rise in the second half of the week, as the trade winds slowly get stronger.

HFO watches / warnings / notices

None.

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Data courtesy of NOAA.gov

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