Hawaii County climate forecast is July 26, 2021

Photo credit: James Grenz

Hilo

Today: Frequent showering. High near 81. Calm wind blowing at 5 to 7 miles per hour from east-northeast in the afternoon. The probability of precipitation is 80%. 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 70. Light east wind. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tuesday: A few showers. Partly sunny, with a high near 82. East-northeast winds 3 to 8 mph. The probability of rainfall is 50%. New rainfall levels of less than a tenth of an inch possible.

Kona

Today: A few showers after noon. Mostly sunny, with a peak near 81. Light and changeable wind. The probability of precipitation is 20%.

Tonight: A few showers before midnight. Partly cloudy, with a low of around 70. Calm wind. The probability of precipitation is 20%.

THE ARTICLE CONTINUES BELOW THE ADVERT

Tuesday: A few showers after noon. Mostly sunny, with a peak near 81. Light west wind. The probability of precipitation is 20%.

Waimea

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: a few showers. Partly sunny, with a high near 74. East-northeast wind around 11 mph. The probability of precipitation is 50%. New amounts of rainfall between half an inch and three quarters of an inch are possible.

Tonight: A few showers. Mostly cloudy, with a low of about 61. East winds 10 to 13 mph. The probability of precipitation is 40%. New amounts of precipitation between a quarter and a half inch are possible.

Tuesday: A few showers. Partly sunny, with a high near 75. East-northeast winds 9 to 11 mph. The probability of precipitation is 40%. New levels of precipitation between a tenth and a quarter of an inch are possible.

Kohala

THE ARTICLE CONTINUES BELOW THE ADVERT

Today: Showers likely. Mostly cloudy, with a peak near 68. Breeze, with an easterly wind of about 27 km / h, with gusts of up to 24 km / h. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Tonight: A few showers. Mostly cloudy with a minimum of about 59. Windy, with easterly winds of 11 to 28 miles per hour, with gusts of up to 40 miles per hour. The probability of precipitation is 50%. New rainfall levels of less than a tenth of an inch possible.

Tuesday: Showers likely, mostly after noon. Partly sunny, with a high near 68. East winds 10 to 21 mph. The probability of precipitation is 60%. New rainfall levels of less than a tenth of an inch possible.

Southern big island

Today: Sunny, with a high near 85. Windy, with an easterly wind of 18 to 21 mph, with gusts of up to 42 mph.

Tonight: Mostly clear, with a minimum of about 75 breezes, with east-northeast winds of 17 to 21 mph, with gusts of up to 42 mph.

Tuesday: Sunny, with a high near 85. Windy, with an easterly wind around 18 miles per hour, with gusts up to 24 miles per hour.

feedback

Today: Frequent showering. High near 77. Northeasterly winds 8 to 13 miles per hour. The probability of precipitation is 80%. New amounts of precipitation between a quarter and a half inch are possible.

Tonight: Showers likely. Mostly cloudy, with a low of about 68. North-northeast winds 7-10 mph. The probability of precipitation is 60%. New amounts of precipitation between a quarter and a half inch are possible.

Tuesday: Showers likely, mostly before noon. Partly sunny, with a high near 78. Northeasterly winds 9 to 21 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, with a peak near 84. North-northeast wind around 8 km / h.

Tonight: Mostly clear, with a low of about 69. East wind about 10 km / h.

Tuesday: Mostly sunny, with a high near 84. North winds 3 to 5 mph.

summary

The moderate to stormy trade winds will weaken slightly on Tuesday and Wednesday and increase again towards the end of the week. There will continue to be showers on the trades, with shower coverage expected to increase tonight and Monday, particularly over the Big Island and upwind Maui. During this time, short rains can be expected.

discussion

High pressure far northeast of the main Hawaiian islands will drive moderate to breezy trade winds across the local waters tonight and tonight. Winds will ease slightly Tuesday through Wednesday as the high weakens. Airy trades will return over the weekend as the high reinforces again later in the week.
Models show increased moisture levels on the Big Island and windward Maui for the next 24 hours. To this day, heavy showers will affect windward and mountainous areas as well as Kona slopes of the Big Island. Windward Big Island and Maui are likely to see inches of rain for the next few days. Most showers are expected to be of moderate intensity, but the frequency of the showers can cause some congestion.
In the western half of the state, we will continue to see showers with the trade winds for the next few days, but total rainfall is expected to be much lower than in the eastern half of the state. Towards the end of the week, a drier mass of air will move in. The trade winds are getting stronger and we will see a sunny and breezy trade wind pattern over the weekend.

aviation

Temperate to occasionally breezy east-northeast passages will help concentrate the showers this morning along the windward coastlines and slopes, particularly along the northeastern parts of the Big Island. Periods with MVFR caps and visibility will likely accompany this activity. Isolated showers expected elsewhere.
AIRMET TANGO remains in effect for areas below 9,000 feet above and immediately south to west of mountains due to tempo-wise turbulence.
AIRMET SIERRA remains in effect for north-east sections of Kauai, Oahu, and the Big Island above 2000 feet to darken the mountains with clouds and showers.

marine

The high surface pressure, located in the far north of the state, will sustain locally strong trade winds and rough seas until tonight, with a Small Craft Advisory remaining in effect for the typically windier waters near Maui County and the Big Island. The trade winds should then weaken from Tuesday to Wednesday. It is expected that high pressure build-up in the north and a surface trough passing far south of the state will result in a return to locally strong trade by Thursday.
The trade winds will continue to create moderate, rough surf along the east-facing coast to this day, but then slowly sink this evening through mid-week due to weakening trade near and upstream of the islands. Moderate and choppy surf will return later in the week as the trades get stronger.
The current small south swell and the associated surf on the south coast will continue to decline to average summer heights during the course of the day. Until the middle of the week, the short to medium-term swell energy of the southeast trade winds from the southern hemisphere ensures low surf along the exposed coastlines.
The surf will remain almost flat on most of the west and north coasts through the middle of the week. Small west-northwest swells resulting from tropical cyclones in the northwest Pacific can arrive along some exposed west and north coasts starting Thursday or Friday. However, confidence in the timing and size of these waves remains low at the moment.

HFO watches / warnings / notices

Small Craft Advisory until Tuesday 6:00 AM HST 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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