Hawaii County Weather Forecast for June 25, 2026 : Big Island Now

Hilo

Rest Of Tonight: Mostly cloudy. Numerous showers in the evening, then occasional showers after midnight. Lows 65 to 72 near the shore to around 58 at 4000 feet. North winds up to 15 mph. Chance of rain 90 percent.

Thursday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 79 to 85 near the shore to around 68 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 70 percent.

Thursday Night: Mostly cloudy. Scattered showers in the evening, then numerous showers after midnight. Lows 65 to 72 near the shore to around 58 at 4000 feet. Northeast winds up to 15 mph shifting to the northwest after midnight. Chance of rain 70 percent.

Kona

Rest Of Tonight: Partly cloudy. Scattered showers in the evening. Lows 66 to 75 near the shore to around 54 near 5000 feet. West winds up to 10 mph in the evening becoming light. Chance of rain 50 percent.

Thursday: Mostly sunny. Isolated showers in the afternoon. Highs 84 to 89 near the shore to around 68 near 5000 feet. Light winds. Chance of rain 20 percent.

Thursday Night: Partly cloudy. Isolated showers in the evening. Lows 67 to 75 near the shore to around 54 near 5000 feet. Light winds. Chance of rain 20 percent.

Waimea

Rest Of Tonight: Breezy. Mostly cloudy with scattered showers. Lows 64 to 73 near the shore to 59 to 66 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain 50 percent.

Thursday: Breezy. Partly sunny with scattered showers. Highs around 82 near the shore to 70 to 80 near 3000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Gusts up to 40 mph. Chance of rain 50 percent.

Thursday Night: Breezy. Mostly cloudy with scattered showers. Lows 65 to 73 near the shore to 59 to 66 near 3000 feet. East winds up to 25 mph. Chance of rain 50 percent.

Kohala

Rest Of Tonight: Breezy. Mostly cloudy with scattered showers. Lows 64 to 73 near the shore to 59 to 66 near 3000 feet. East winds 10 to 25 mph with gusts to 45 mph. Chance of rain 50 percent.

Thursday: Breezy. Partly sunny with scattered showers. Highs around 82 near the shore to 70 to 80 near 3000 feet. East winds up to 20 mph increasing to 10 to 20 mph in the afternoon. Gusts up to 40 mph. Chance of rain 50 percent.

Thursday Night: Breezy. Mostly cloudy with scattered showers. Lows 65 to 73 near the shore to 59 to 66 near 3000 feet. East winds up to 25 mph. Chance of rain 50 percent.

South Big Island

Rest Of Tonight: Partly cloudy. Windy. Isolated showers in the evening. Lows around 75 near the shore to around 57 near 5000 feet. East winds up to 30 mph. Chance of rain 20 percent.

Thursday: Sunny and windy. Isolated showers in the afternoon. Highs around 86 near the shore to around 67 near 5000 feet. East winds up to 25 mph increasing to 10 to 30 mph in the afternoon. Chance of rain 20 percent.

Thursday Night: Mostly clear. Breezy. Lows around 76 near the shore to around 57 near 5000 feet. East winds up to 25 mph shifting to the northeast 10 to 25 mph after midnight. Gusts up to 45 mph.

Puna

Rest Of Tonight: Mostly cloudy. Numerous showers in the evening, then occasional showers after midnight. Lows 65 to 72 near the shore to around 58 at 4000 feet. North winds up to 15 mph. Chance of rain 90 percent.

Thursday: Mostly cloudy. Numerous showers in the morning, then scattered showers in the afternoon. Highs 79 to 85 near the shore to around 68 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 70 percent.

Thursday Night: Mostly cloudy. Scattered showers in the evening, then numerous showers after midnight. Lows 65 to 72 near the shore to around 58 at 4000 feet. Northeast winds up to 15 mph shifting to the northwest after midnight. Chance of rain 70 percent.

Waikoloa

Rest Of Tonight: Partly cloudy. Breezy. Isolated showers in the evening. Lows 68 to 75 near the shore to 52 to 58 above 4000 feet. East winds up to 25 mph with gusts to 45 mph. Chance of rain 20 percent.

Thursday: Sunny and breezy. Highs 85 to 90 near the shore to 65 to 73 above 4000 feet. Northeast winds up to 20 mph.

Thursday Night: Mostly clear. Breezy. Isolated showers in the evening. Lows 69 to 75 near the shore to 52 to 57 above 4000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Synopsis

Moderate to breezy trade winds can be expected through the weekend and likely into the first half of next week, pushing showers over mostly windward and mountain areas. These showers will be more active during the night time and early morning hours. A mid level and upper level trough could occasionally allow some of these showers to be a little heavier than normal.

Short term update

Minor updates were made to increase winds slightly over the typical windier areas in the vicinity of the Big Island and Maui County on Friday. Otherwise, the forecast remains on track.

Prev discussion

Issued at 317 PM HST Wed Jun 24 2026 Water vapor imagery shows an upper level low centered 600 miles northeast of Hawaii. At the surface, breezy trade winds are driven by a 1033 mb high centered 1200 miles north of Hawaii. While most of the moisture along a surface trough that moved through the state yesterday has tracked away to the west, incoming pockets of low clouds and showers will continue to pass through the islands from now through the weekend. Nighttime and early morning hours along windward slopes will be the prime time and location for a majority of the showers. Isolated leeward showers will also be possible across the smaller islands, and along the Kona slopes during the afternoons. The upper low and surface high will remain mainly stationary into next week, resulting in the overall rainfall amounts/intensity less than Tuesday, but not completely dry.
Long range guidance suggests another influx of moisture possibly arriving by the middle of next week. There are some differences in model solutions regarding trade wind speeds due to the forecasted strength and position of the high pressure to the north.

Aviation

Moderate to breezy trades are expected through the forecast period. Low clouds and showers will favor windward and mauka areas. Expect MVFR conditions within showers and VFR elsewhere.
AIRMET Sierra is in effect for mountain obscurations for windward sections and kona slopes of the Big Island. Conditions should improve over the kona slopes overnight, while mountain obscurations for windward areas may linger into the morning due to ongoing and upstream showers.
AIRMET Tango is in effect for moderate turbulence downwind of terrain due to the breezy trade winds and will continue overnight.

Marine

Issued at 317 PM HST Wed Jun 24 2026
A surface high will remain nearly stationary north of the state through the week, generating moderate to locally strong trades. Trades will persist through the weekend with minor fluctuations in speeds as the high shifts northeast of the state and gradually strengthens. A Small Craft Advisory (SCA) remains in effect for select waters across the state. The SCA will likely be extended for the typically windier waters around Maui and the Big Island through the weekend as breezy trades hold.
A series of small to moderate, medium to long period south and southeast swells will keep surf along south facing shores elevated into the weekend. A small, long period south swell will continue to fill through tonight and peak Thursday with head high to overhead surf heights at most exposed south shore surf breaks. Additional small pulses of south swell energy arrive on Saturday and Sunday.
Surf along east facing shores will gradually build through Thursday then hold into the weekend as breezy trades persist. West facing shores will remain on the small side with a slight south swell wrap. Surf heights along north facing shores will increase into Thursday due to tiny background northwest swell energy.

HFO Watches/Warnings/Advisories

Small Craft Advisory until 6 AM HST Thursday for Alenuihaha Channel, Big Island Leeward Waters, Big Island Southeast Waters, Kauai Channel, Kauai Leeward Waters, Kauai Northwest Waters, Maalaea Bay, Oahu Leeward Waters, Pailolo Channel.

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Data Courtesy of NOAA.gov