Hilo

Tonight: Partly cloudy with isolated showers in the evening, then mostly cloudy with scattered showers after midnight. Lows 63 to 71 near the shore to around 57 at 4000 feet. Light winds. Chance of rain 40 percent.

Friday: Mostly cloudy with scattered showers. Highs around 81 near the shore to around 68 at 4000 feet. East winds up to 10 mph. Chance of rain 50 percent.

Friday Night: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 63 to 71 near the shore to around 56 at 4000 feet. North winds up to 10 mph. Chance of rain 50 percent.

Kona

Tonight: Partly cloudy with isolated showers in the evening, then mostly cloudy after midnight. Lows around 72 near the shore to 47 to 56 near 5000 feet. Light winds. Chance of rain 20 percent.

Friday: Mostly cloudy with isolated showers. Highs 83 to 88 near the shore to around 68 near 5000 feet. Northwest winds up to 10 mph. Chance of rain 20 percent.

Friday Night: Mostly cloudy with isolated showers in the evening, then mostly clear after midnight. Lows around 72 near the shore to 47 to 56 near 5000 feet. Light winds. Chance of rain 20 percent.

Waimea

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Isolated showers. Lows 63 to 71 near the shore to 57 to 64 near 3000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Friday: Mostly cloudy with scattered showers. Highs around 80 near the shore to 70 to 78 near 3000 feet. East winds up to 15 mph. Chance of rain 50 percent.

Friday Night: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 63 to 71 near the shore to 57 to 64 near 3000 feet. East winds up to 15 mph increasing to 10 to 15 mph after midnight. Chance of rain 50 percent.

Kohala

Tonight: Partly cloudy in the evening then becoming mostly cloudy. Isolated showers. Lows 63 to 71 near the shore to 57 to 64 near 3000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Friday: Mostly cloudy with scattered showers. Highs around 80 near the shore to 70 to 78 near 3000 feet. East winds up to 15 mph. Chance of rain 50 percent.

Friday Night: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 63 to 71 near the shore to 57 to 64 near 3000 feet. East winds up to 15 mph increasing to 10 to 15 mph after midnight. Chance of rain 50 percent.

South Big Island

Tonight: Partly cloudy with isolated showers in the evening, then mostly cloudy after midnight. Lows around 75 near the shore to around 55 near 5000 feet. East winds up to 15 mph. Chance of rain 20 percent.

Friday: Mostly cloudy. Isolated showers in the afternoon. Highs around 85 near the shore to around 68 near 5000 feet. East winds up to 15 mph. Chance of rain 20 percent.

Friday Night: Mostly cloudy with isolated showers in the evening, then mostly clear after midnight. Lows around 74 near the shore to around 55 near 5000 feet. Northeast winds up to 15 mph. Chance of rain 20 percent.

Puna

Tonight: Partly cloudy with isolated showers in the evening, then mostly cloudy with scattered showers after midnight. Lows 63 to 71 near the shore to around 57 at 4000 feet. Light winds. Chance of rain 40 percent.

Friday: Mostly cloudy with scattered showers. Highs around 81 near the shore to around 68 at 4000 feet. East winds up to 10 mph. Chance of rain 50 percent.

Friday Night: Mostly cloudy in the evening then becoming partly cloudy. Scattered showers. Lows 63 to 71 near the shore to around 56 at 4000 feet. North winds up to 10 mph. Chance of rain 50 percent.

Waikoloa

Tonight: Partly cloudy with isolated showers in the evening, then mostly cloudy after midnight. Lows around 74 near the shore to 51 to 56 above 4000 feet. Northeast winds up to 10 mph in the evening becoming light. Chance of rain 20 percent.

Friday: Mostly cloudy with isolated showers. Highs 83 to 89 near the shore to around 69 above 4000 feet. Northwest winds up to 10 mph. Chance of rain 20 percent.

Friday Night: Mostly cloudy in the evening then becoming mostly clear. Isolated showers. Lows around 74 near the shore to 50 to 56 above 4000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Detailed Forecast

Synopsis

Light to more breezy trade winds will return tomorrow and hold well into next week. Winds will be weak enough the next couple of days to allow for more localized breezes to be the dominant flow through Sunday morning. This flow pattern will favor more thicker cloud build up and higher shower frequency primarily focused over upslope windward mauka interior areas during the day with partial clearing over leeward spots overnight. An approaching band of moisture and weak upper level instability brought on by a vicinity eastern trough will increase windward rain chances from Friday afternoon through Saturday evening. Broad surface ridging developing north of the state will maintain trades through next week.

Update

Another quiet evening radar-wise with the target areas for higher rainfall overnight tonight likely being the windward Big Island Puna and K'au Districts as a higher slug of moisture approaches from the east. A weak circulation possibly in association with the tail end of a weak lower level trough approximately 100 miles offshore of Hilo is slowly retrograding west. This will decrease stability enough over those waters just east of Big Island to introduce areas of maritime showers that will periodically come onshore over windward Big Island from tonight through Saturday. This relatively more moist air mass will move west northwest up the island chain through Friday and Saturday and produce more frequent showers over better eastern-facing, or windward, exposures. Cloud cover will gradually thicken up through the day tomorrow, especially in the mid to high levels, and this will keep many windward (coastal) areas receiving better trade flow in the mid to upper 70s…while mostly sunny leeward lighter wind/rain/cloud shadowed communities will warm into the low to mid 80s both Friday and Saturday.

Prev discussion

/ISSUED 401 PM HST Thu May 7 2026/
Satellite and radar imagery show some clouds and showers have build over interior and mauka areas as a hybrid seabreeze and tradewind pattern continues. Expect some leeward areas to clear out overnight as land breeze develops shortly after sunset. Light to gentle tradewinds are expected to continue through Friday morning so can expect another repeat of seabreezes developing Friday morning allowing clouds and showers to develop over leeward and interior areas. The one limiting factor for Friday morning and afternoon would be the increase in upper level clouds that could reduce afternoon convection as the subtropical jet moves overhead. A weak trough just east of the Big Island will track northwest early Friday morning that will increase the chance of precipitation for windward and mauka areas, particularly for Big Island and Maui County. The high northwest of the state will jag southeast by Friday afternoon as the weak surface trough lifts north allowing tradewinds to gradually strengthen to gentle to breezy speeds.
Saturday through the weekend a weak upper level trough will move over the state as a pool of moisture remains over the state that could make for taller clouds and more moderate trade wind showers developing over windward and mauka areas and spilling over to leeward areas as inversion heights become more elevated.
A more robust, vertically stacked ridging is forecast to expand in from the west early next week. This will provide greater stability in tandem with a relatively drier atmosphere. Thus, overall statewide shower activity will be on the decline going into the middle of next week. Tradewind speeds are also expected to become more breezy to locally windy as a strong surface high develops north of the state.

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Data Courtesy of NOAA.gov