West Side

Today: Sunny. Highs 80 to 87. East winds up to 15 mph.

Tonight: Mostly clear. Lows 66 to 73. Northeast winds up to 10 mph.

Sunday: Sunny. Highs 79 to 86. East winds up to 10 mph shifting to the west in the afternoon.

South Side

Today: Sunny and breezy. Highs around 89. North winds up to 15 mph increasing to up to 25 mph in the afternoon.

Tonight: Clear. Lows 65 to 75. North winds 10 to 15 mph decreasing to up to 15 mph after midnight.

Sunday: Sunny and breezy. Highs around 88. North winds up to 20 mph.

North Shore

Today: Breezy. Mostly sunny with isolated showers. Highs around 82 near the shore to around 68 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Tonight: Partly cloudy with isolated showers. Lows 67 to 72 near the shore to around 50 near 5000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Sunday: Breezy. Mostly sunny with isolated showers. Highs around 82 near the shore to around 68 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Central Maui

Today: Sunny and breezy. Highs 83 to 89. Northeast winds up to 20 mph.

Tonight: Clear. Lows 66 to 74. Northeast winds up to 10 mph.

Sunday: Sunny and breezy. Highs 82 to 89. Northeast winds up to 20 mph.

Upcountry

Today: Sunny with isolated showers. Highs around 66 at the visitor center to around 69 at the summit. Northeast winds up to 15 mph. Chance of rain 20 percent.

Tonight: Mostly clear. Lows around 45 at the visitor center to around 47 at the summit. Northeast winds 10 to 15 mph decreasing to up to 15 mph after midnight.

Sunday: Sunny and breezy. Isolated showers in the afternoon. Highs around 65 at the visitor center to around 69 at the summit. Northeast winds up to 15 mph increasing to 10 to 20 mph in the afternoon. Chance of rain 20 percent.

East Maui

Today: Breezy. Mostly sunny with isolated showers. Highs around 82 near the shore to around 68 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Tonight: Partly cloudy with isolated showers. Lows 67 to 72 near the shore to around 50 near 5000 feet. East winds up to 10 mph. Chance of rain 20 percent.

Sunday: Breezy. Mostly sunny with isolated showers. Highs around 82 near the shore to around 68 near 5000 feet. East winds up to 20 mph. Chance of rain 20 percent.

Lanai City

Today: Sunny and breezy. Highs 73 to 82. Northeast winds up to 20 mph.

Tonight: Clear. Lows around 66. Northeast winds around 10 mph becoming up to 15 mph after midnight.

Sunday: Sunny and breezy. Highs 72 to 81. Northeast winds up to 20 mph.

Kaunakakai

Today: Sunny. Highs 71 to 90. East winds up to 15 mph.

Tonight: Clear. Lows 59 to 75. East winds up to 10 mph.

Sunday: Sunny. Highs 70 to 89. East winds up to 15 mph.

Detailed Forecast

Synopsis

Moisture will decrease through the weekend with light to moderate trades returning. Showers will impact windward and mauka locations. A brief increase in showers expected Monday night on the Big Island before a return to relatively dry trades through the end of next week.

Discussion

Currently at 3 AM HST, satellite and radar imagery showed scattered clouds and showers moving along mostly windward and mauka locations across the state.
The upper level low that brought rain to the area this week will weaken and move away to the northeast over the next few days. A surface high pressure system to our northeast will strengthen and bring easterly trades back to the region. Apart from a brief increase in moisture mainly for the Big Island Monday, the next several days will be dominated by relatively dry trades. Isolated to scattered showers windward and mauka will be most frequent at night. Otherwise, expect light to moderate winds and rather typical October conditions.

Aviation

Moderate trade winds build back into the islands through the weekend. VFR conditions will prevail at all airfields.
No AIRMETS are currently in effect or expected.

Marine

Moderate to fresh trade winds will build back over the majority of the coastal waters this weekend, though weaker winds will remain in place over the western waters as a trough continues to linger west of the area. Although there will be slight day to day fluctuations, gentle to fresh trades will prevail throughout much of next week.
The current moderate, long period south swell will fade gradually through the weekend, but a long-period reinforcement is set to arrive on Saturday, then peak Sunday into Monday. This will maintain elevated surf along south and west- facing shores, but it will remain below advisory levels. South shore surf will decline slightly by the middle of next week, but will be followed by a new long period swell Wednesday night or Thursday.
A medium-period northwest swell declines through the weekend as the source low pressure northwest of the Hawaiian Islands continues to weaken through Monday. This will cause small surf along north-facing shores to begin to fade today. A smaller long- period northwest swell is also forecast to move through the islands this weekend, which could prolong small surf through Sunday, but will fade by the beginning of next week. A small, long-period northwest swell is forecast to arrive on Monday and peak Tuesday, boosting north shore surf back to moderate levels.
Surf along east-facing shores will remain small as local winds remain fairly weak with only slight variations each day. Small, moderate-period west and east swells generated by multiple Pacific tropical cyclones are also moving through the islands this weekend.

Fire weather

Light to moderate trades expected. Moisture will decrease Saturday night into Sunday, bringing RH values down to near dangerous fire conditions Monday on part of the Big Island, including near Kona. Inversion heights are around 5500-6500 feet.

HFO Watches/Warnings/Advisories

None.

Data Courtesy of NOAA.gov