Hilo

Tonight: Mostly cloudy with scattered showers. Lows 59 to 69 near the shore to around 53 at 4000 feet. Northwest winds up to 15 mph. Chance of rain 50 percent.

Thursday: Partly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 80 near the shore to around 67 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows 59 to 70 near the shore to around 53 at 4000 feet. North winds up to 10 mph in the evening becoming light. Chance of rain 20 percent.

Kona

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Lows around 71 near the shore to 48 to 53 near 5000 feet. Light winds.

Thursday: Partly sunny. Scattered showers in the afternoon. Highs 82 to 87 near the shore to around 66 near 5000 feet. Light winds. Chance of rain 50 percent.

Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. Lows 69 to 74 near the shore to around 51 near 5000 feet. Light winds.

Waimea

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Breezy. Scattered showers. Lows 60 to 71 near the shore to 51 to 62 near 3000 feet. East winds 10 to 20 mph. Chance of rain 40 percent.

Thursday: Partly sunny. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 79 near the shore to 68 to 77 near 3000 feet. East winds 10 to 20 mph decreasing to up to 20 mph in the afternoon. Chance of rain 40 percent.

Thursday Night: Partly cloudy with isolated showers. Lows 60 to 71 near the shore to 52 to 62 near 3000 feet. East winds up to 15 mph increasing to 10 to 15 mph after midnight. Chance of rain 20 percent.

Kohala

Tonight: Mostly cloudy in the evening then becoming partly cloudy. Breezy. Scattered showers. Lows 60 to 71 near the shore to 51 to 62 near 3000 feet. East winds 10 to 20 mph. Chance of rain 40 percent.

Thursday: Partly sunny. Breezy. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 79 near the shore to 68 to 77 near 3000 feet. East winds 10 to 20 mph decreasing to up to 20 mph in the afternoon. Chance of rain 40 percent.

Thursday Night: Partly cloudy with isolated showers. Lows 60 to 71 near the shore to 52 to 62 near 3000 feet. East winds up to 15 mph increasing to 10 to 15 mph after midnight. Chance of rain 20 percent.

South Big Island

Tonight: Partly cloudy. Lows 70 to 75 near the shore to around 51 near 5000 feet. Northeast winds up to 15 mph.

Thursday: Partly sunny. Breezy. Scattered showers in the afternoon. Highs around 85 near the shore to around 65 near 5000 feet. East winds up to 20 mph. Chance of rain 50 percent.

Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. Breezy. Lows 70 to 75 near the shore to around 51 near 5000 feet. Northeast winds up to 20 mph shifting to the east 10 to 15 mph after midnight.

Puna

Tonight: Mostly cloudy with scattered showers. Lows 59 to 69 near the shore to around 53 at 4000 feet. Northwest winds up to 15 mph. Chance of rain 50 percent.

Thursday: Partly sunny. Scattered showers in the morning, then isolated showers in the afternoon. Highs around 80 near the shore to around 67 at 4000 feet. Northeast winds up to 15 mph. Chance of rain 50 percent.

Thursday Night: Mostly cloudy in the evening then becoming partly cloudy. Isolated showers. Lows 59 to 70 near the shore to around 53 at 4000 feet. North winds up to 10 mph in the evening becoming light. Chance of rain 20 percent.

Waikoloa

Tonight: Mostly cloudy in the evening then becoming mostly clear. Breezy. Lows 68 to 74 near the shore to 49 to 54 above 4000 feet. East winds up to 20 mph.

Thursday: Partly sunny. Isolated showers in the afternoon. Highs around 85 near the shore to 64 to 70 above 4000 feet. Northeast winds up to 15 mph. Chance of rain 20 percent.

Thursday Night: Partly cloudy. Lows 69 to 74 near the shore to 50 to 55 above 4000 feet. East winds up to 15 mph.

Detailed Forecast

Synopsis

Breezy trades become moderate late this week through the weekend. Scattered showers focus windward and mauka into next week.

Short term update

No amendments have been made to the current forecast as it remains on track. Broad area of high pressure remains anchored north of the islands, maintaining breezy trades across the islands, bringing periods of showers to windward and mauka locations. Model guidance continues to show an upper-level low and associated trough moving into the vicinity of the islands from the west, which is expected to gradually disrupt the trade wind pattern through the weekend and into the early part of next week.

Prev discussion

Issued at 318 PM HST Wed May 27 2026 High stability remains firmly entrenched over the state. Breezy trades are delivering showers to windward and mauka sections of the islands this morning beneath the resident 8kft trade inversion. No change in the large scale pattern is anticipated for the next several days as the islands reside under or equatorward of the subtropical jet placing the region beneath a broad swath of large scale subsidence in maintenance of existing stability. Sensible weather will be largely modulated by periodic fluctuations in the trades which will weaken in concert with periodic height falls across the Central/North Pacific. The first such instance will be a gradual weakening of trades during the latter half of this week in response to a rapidly weakening 1040mb high migrating toward 35N and weakening considerably as it does so. It is certainly plausible that trades are briefly lost altogether early next week setting the stage for a period of land/sea breezes. Given the high stability environment in place, would expect little in the way of interior showers should that pattern develop. Otherwise, scattered showers will focus windward and mauka for the balance of the forecast period.

Aviation

Trades will continue to gradually trend downward over the course of the week as a stable weather pattern remains in place over the islands. Isolated showers cannot be ruled out for windward sites, however VFR conditions are widely anticipated.
AIRMET Sierra remains in effect for mountain obscuration over Kauai, however conditions are gradually improving this evening, so this may be cancelled by or even before next issuance.
AIRMET Tango remains in effect across all islands down mountain for moderate turbulence due to breezy trades, however as winds scale back in intensity, its possible that this AIRMET may be scaled back or even discontinued within the next 24-48 hours.

Marine

Issued at 318 PM HST Wed May 27 2026 A surface ridge north of the state will maintain breezy to strong trade winds across the Hawaiian coastal waters through this afternoon before a weakness developing in the ridge allows trade wind speeds to ease slightly during the latter part of the week into the weekend. With the ASCAT pass from earlier today showing wind speeds already starting weaken, the Small Craft Advisory has been scaled back to the typically windier waters around the Big Island and Maui County. A more significant weakening of the trade winds is likely this weekend into early next week as a large North Pacific low pressure system far north of the islands breaks the ridge down even further.
A small, long-period northwest swell is peaking as it fills in down the island chain this afternoon. North- and west-facing shores are experiencing near- to above-seasonal-average surf that will hold through the evening before gradually subsiding into the weekend.
A series of medium-period south swells will continue to bring small surf to south facing shores through Thursday. A more significant long-period south swell is expected to begin filling in Thursday night and will likely bring above-advisory-level surf to south-facing shores through the weekend. This swell originated from a storm-force low that passed south and east of New Zealand over the weekend, generating seas of 35 to 40 feet or greater within Hawaiis swell window, though the peak of the energy may pass just east of the state. The buoys near American Samoa picked up a portion of this swell today, seeming to peak around 5 feet 16 seconds, with the peak of the swell also likely passing to their east. Elevated surf along south-facing shores will likely continue into the first week of June due to a continued active weather pattern near New Zealand sending swells toward Hawaii.
Rough surf along east-facing shores will gradually lower Thursday through the weekend as trade winds ease.

HFO Watches/Warnings/Advisories

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

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Data Courtesy of NOAA.gov