West Side

Today: Mostly sunny. Highs 79 to 86. Northeast winds up to 15 mph.

Tonight: Partly cloudy. Lows 69 to 76. Northeast winds up to 15 mph.

Saturday: Mostly sunny. Highs 78 to 86. Northeast winds up to 15 mph.

South Side

Today: Mostly sunny. Highs around 88. North winds up to 15 mph increasing to 10 to 15 mph in the afternoon.

Tonight: Partly cloudy. Lows 70 to 79. North winds 10 to 15 mph.

Saturday: Mostly sunny. Highs around 87. North winds 10 to 15 mph.

North Shore

Today: Partly sunny with scattered showers. Highs around 82 near the shore to around 66 near 5000 feet. East winds up to 15 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy with isolated showers in the evening, then partly cloudy after midnight. Lows around 72 near the shore to around 56 near 5000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Saturday: Partly sunny with isolated showers. Highs around 82 near the shore to 65 to 70 near 5000 feet. Northeast winds up to 10 mph. Chance of rain 20 percent.

Central Maui

Today: Mostly sunny. Isolated showers in the morning. Highs 81 to 88. Northeast winds up to 15 mph increasing to 10 to 15 mph in the afternoon. Chance of rain 20 percent.

Tonight: Partly cloudy. Lows 70 to 75. Northeast winds 10 to 15 mph.

Saturday: Mostly sunny. Highs 80 to 87. Northeast winds 10 to 15 mph.

Upcountry

Today: Partly sunny. Isolated showers in the morning, then scattered showers in the afternoon. Highs around 63 at the visitor center to around 67 at the summit. Light winds. Chance of rain 50 percent.

Tonight: Mostly cloudy with isolated showers in the evening, then partly cloudy after midnight. Lows around 51 at the visitor center to around 46 at the summit. Light winds. Chance of rain 20 percent.

Saturday: Mostly sunny. Isolated showers in the afternoon. Highs 63 to 80. Light winds. Chance of rain 20 percent.

East Maui

Today: Partly sunny with scattered showers. Highs around 82 near the shore to around 66 near 5000 feet. East winds up to 15 mph. Chance of rain 50 percent.

Tonight: Mostly cloudy with isolated showers in the evening, then partly cloudy after midnight. Lows around 72 near the shore to around 56 near 5000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Saturday: Partly sunny with isolated showers. Highs around 82 near the shore to 65 to 70 near 5000 feet. Northeast winds up to 10 mph. Chance of rain 20 percent.

Lanai City

Today: Mostly sunny. Isolated showers in the afternoon. Highs 73 to 81. Northeast winds up to 15 mph. Chance of rain 20 percent.

Tonight: Partly cloudy. Lows 67 to 72. Northeast winds 10 to 15 mph.

Saturday: Mostly sunny. Isolated showers in the afternoon. Highs 76 to 82. Northeast winds up to 15 mph. Chance of rain 20 percent.

Kaunakakai

Today: Mostly sunny. Highs 70 to 88. Northeast winds up to 15 mph.

Tonight: Partly cloudy. Isolated showers after midnight. Lows 60 to 76. Northeast winds 10 to 15 mph decreasing to up to 15 mph after midnight. Chance of rain 20 percent.

Saturday: Mostly sunny. Highs 75 to 87. Northeast winds up to 15 mph.

Detailed Forecast

Synopsis

Light to moderate trade winds this morning will gradually strengthen over the next few days with moderate trades expected over the weekend. Brief passing showers will drift into the islands on the northeasterly trade winds, favoring windward and mountain areas during the overnight to early morning hours. A more significant change to our weather pattern continues to evolve for early next week beginning sometime Monday night or Tuesday. Deeply unstable tropical moisture moving across the state will bring the potential for heavy rain and thunderstorms affecting all islands through at least the middle of next week.

Discussion

The trade winds have eased to become light to moderate in response to the weakening pressure gradient as the surface high gets pushed farther northeast of the state and a low pressure system sets up to the north. As this low continues to drift southeastward, high pressure will build behind and will allow the northeasterly trades to gradually strengthen through the weekend. Moderate trades are expected later this afternoon and could become locally breezy in a few areas this weekend as the remnants of a dissipating frontal boundary moves into Kauai on Saturday and over Oahu on Sunday. An increase of trade wind showers should be expected as the old frontal boundary moves through this weekend.
Also a weak trough southeast of the Big Island could bring an uptick of moisture over windward Big Island this weekend. Brief downpours will be possible, especially over the windward slopes during the afternoons.
Starting next week, a very unusual weather pattern is expected to develop over the state. A surface low is expected to develop near 15N and the international dateline this weekend. This low pressure system will gradually track eastward next week. While tracking eastward, a deep upper level trough will develop just west of the state and will transport a broad area of deep tropical moisture (with precipitable water values of up to 2.5 inches) over the state around Tuesday and Wednesday of next week. While there are still some timing differences, there is potential for significant heavy rain and flash flooding towards the middle of next week. Due to the broad band of deep moisture, it is going to be difficult to pinpoint what areas will be impacted the most and will highly depend on where the clusters of thunderstorms develop. While, heavy rain and flash flooding will be the main concern, some damaging winds will be possible with any thunderstorms.

Aviation

Gentle to moderate trade wind weather is expected today with mostly VFR conditions. An increase of showers around PHTO could produce brief MVFR conditions later this afternoon.
A strong jet developing today with the jet streak located just north of the state could produce light to moderate turbulence around Kauai and Oahu between FL240 to FL320. Severe turbulence will be possible further north of the state especially this afternoon into Saturday morning. See SIGMET ROMEO for more information.
No AIRMET's are in effect, but we may need AIRMET TANGO later today if we begin to see reports of moderate turbulence.

Marine

Easterly trade winds will be at gentle to moderate strength through Friday as surface low pressure far north of Hawaii and a nearby surface trough weaken the local pressure gradient. Trades are expected to hold at current strength and shift out of the northeast this weekend as high pressure far northwest of Hawaii pushes the low eastward. The weaker trade winds should persist Monday, but uncertainty increases on Tuesday, hinging on the potential development of a low southwest of the islands.
A small, medium-period northwest swell will arrive overnight and provide a small boost to surf along north-facing shores on Friday. A moderate, medium-period north-northwest swell will build late Saturday and peak around seasonal average on Sunday. As this swell declines on Monday, a long-period west-northwest swell will arrive, maintaining small to moderate surf into the middle of next week.
Small background level surf will prevail along south-facing shores through Friday. A small to moderate south-southwest swell is expected to boost surf to around seasonal average this weekend into early next week.
Along east-facing shores, trade-wind swell will continue to decrease through Friday, though a small, medium-period northeast swell may maintain small surf through Saturday. Aside from wrapping north-northwest swell in exposed areas, east shore surf should remain below seasonal average much of next week.

Fire weather

Issued at 329 AM HST Fri Oct 23 2026
Moderate trade winds with mostly dry conditions over leeward areas will continue to produce low to moderate fire weather conditions through the weekend. Ample tropical moisture will move in from the southwest sometime beginning Monday night or Tuesday, bringing a threat for heavy rain through the middle of the week. As a result, fire weather concerns will be low next week. Inversion heights will range from 6,000 to 8,000 feet today and will be relatively weak over the eastern end of the state due to a weak trough southeast of the Big Island.

HFO Watches/Warnings/Advisories

None.

Data Courtesy of NOAA.gov