Hawaii County climate forecast is July 16, 2021

Hilo

Today: a few showers. Partly sunny with a high near 84. Calm wind blowing between 5 and 9 mph to the northeast in the afternoon. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely, mostly after midnight. Mostly cloudy with a low of about 67. Northeasterly winds 5 to 11 mph will be light and variable. The probability of precipitation is 70%. New rainfall levels of less than a tenth of an inch possible.

Saturday: Showers likely, mostly before noon. Mostly cloudy with highs near 84. East-northeast winds 6 to 9 mph. The probability of rainfall is 60%. New rainfall levels of less than a tenth of an inch possible.

Kona

Today: A few showers after noon. Mostly sunny with a high near 80. Southwest winds 5 to 11 mph that become calm in the afternoon. The probability of precipitation is 20%.

Tonight: A few showers, mostly before midnight. Mostly cloudy with a low of 66. Calm wind. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

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Saturday: A few showers after noon. Partly sunny, with a peak near 80. Light and changeable wind. 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 from 1 p.m. Mostly sunny, with a high near 79. Windy, with northeasterly winds of 20 to 25 miles per hour, with gusts of up to 60 miles per hour. The probability of precipitation is 30%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers. Mostly cloudy, with a minimum of about 59. Breeze, with an easterly wind of about 24 km / h, with gusts of up to 34 km / h. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Saturday: A few showers. Partly sunny, with a peak near 79. East-northeast wind around 22 km / h, with gusts of up to 18 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: A few showers, especially after noon. Mostly sunny, with a high near 65. Windy, with an east-northeast wind of 22 to 42 mph, with gusts of up to 38 mph. The probability of precipitation is 40%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely, mostly after midnight. Mostly cloudy, with a low of about 54. Windy, with easterly winds of 20 to 35 km / h, with gusts of up to 50 km / h. The probability of precipitation is 70%. New rainfall levels of less than a tenth of an inch possible.

Saturday: Showers likely. Mostly cloudy, with a peak near 65. Windy, with easterly winds around 34 km / h, with gusts up to 45 km / h. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Southern big island

Today: A few showers before noon. Mostly sunny, with a peak near 85. Windy, with easterly winds of 22 to 42 mph, with gusts of up to 54 mph. The probability of precipitation is 20%.

Tonight: A few showers. Partly cloudy, with a minimum of around 75. Breeze, 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%.

Saturday: individual showers. Partly sunny, with a peak near 85. Windy, with easterly winds of 20 to 35 km / h, with gusts of up to 45 km / h. The probability of precipitation is 20%.

Feedback

Today: a few showers. Partly sunny, peaking near 83rd breeze, with north-northeast winds of 9 to 25 mph, with gusts of up to 35 mph. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tonight: Showers likely, mostly after midnight. Mostly cloudy, with a low of around 65. North winds 9 to 22 km / h, with gusts of up to 30 km / h. The probability of precipitation is 70%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Saturday: Showers likely, mostly before noon. Mostly cloudy, with a peak near 83. Breezes, with northeasterly winds of 11 to 25 mph, with gusts of up to 34 mph. The probability of precipitation is 60%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Waikoloa

Today: Mostly sunny, peaking near 85. Windy, with northeasterly winds of 21 to 42 mph, decreasing to 12 to 12 mph. Gusts of wind could reach up to 38 km / h.

Tonight: A few showers before midnight. Partly cloudy, with a low of about 67. East wind about 11 km / h. The probability of precipitation is 20%.

Saturday: A few showers after noon. Mostly sunny, with a high near 85. North-northeast winds around 11 mph. The probability of rainfall is 20%.

Summary

The high pressure in the north of the area will support airy trade winds over the weekend. Stronger winds may appear early next week. Low clouds will move over the islands from the east and sparse showers will bundle up over the windward areas.

discussion

High pressures in the north and northeast of the islands will cause trade winds to blow over local waters for the foreseeable future. The main high will hardly change until today and then dissolve over the weekend when a new high forms in the north. Central pressures from this new high are expected to peak at 1038 mb early next week, making the pressure gradient steeper enough to allow locally windy trades across exposed waters on Monday and Tuesday. Otherwise, breezy trade winds will prevail.
An area of ​​increased humidity embedded in the trade flow will move across the islands Saturday and Saturday nights and potentially lead to an increase in wind showers. Otherwise, the weak mid-elevation ridge will give way to a weak mid-elevation low over the weekend, which may allow low clouds to gain greater vertical depth, leading to increased trade shower coverage at times.

aviation

The breezy trade winds from the east will persist throughout the weekend, with clouds and showers concentrated over windward and mauka locations. MVFR CIGS / VSBYS are possible in and around passing showers. AIRMET Tango for low turbulence remains in effect until the weekend.

marine

Strong local trade winds will persist, with journeys likely to pick up early next week. Surface high pressure will persist far north of the state through the weekend, keeping trade at a moderate to locally strong level. A Small Craft Advisory (SCA) covers the normally windy waters around the Big Island and Maui through Sunday and also covers additional waters around Oahu and Maui Counties through this afternoon. As mentioned above, trades are expected to pick up early next week, which may require another expansion of the SCA.
The surf on the south coast will increase from background levels to about summer average over the weekend. The south swell will slowly build up today, peaking Saturday through Sunday and decreasing early next week. The surf on the east coast will be near or slightly above the summer average during the weekend and then build up as the trade winds are expected to pick up over and against the winds of the islands early next week. Aside from some localized trade wind energies, the surf along most of the north-facing coastlines will remain almost flat until next week.

HFO watches / warnings / notices

Small Craft Advisory until 6:00 p.m. HST on Sunday for Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters.
Small boat advice until 6:00 p.m. HST tonight for Oahu Leeward Waters, Kaiwi Channel, Maui County Windward Waters, Maui County Leeward Waters.

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Data courtesy of NOAA.gov

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