A band of showers, some heavy, will develop over the western half of the state tonight and bring rainfall early next week. Winds remain light through much of the forecast period with moderate trades building in by the end of the week.
Issued at 902 AM HST Sat Apr 11 2026
A band of layered clouds, along with lingering showers, will reside over Molokai and eastward today. Less activity is expected over the western islands, other than diurnally driven afternoon interior showers over Oahu and Kauai. Windward Big Island could also see some afternoon shower activity. MVFR ceilings and visibility with isolated IFR conditions will be possible with any of the heavier shower activity. Expect sea and land breezes today for the western half of the state, while light to moderate S - SE winds remain for the eastern half.
A narrow band of moisture is expected to develop over the central portions of the island chain as early as tonight. This band of moisture will likely bring another round of heavier showers with isolated thunderstorms through Monday morning.
AIRMET Sierra is in effect for mountain obscuration above 1500 ft for Molokai, and for IFR conditions over Oahu and Lanai. IFR conditions will likely diminish with diurnal heating later this morning, but mountain obscurations may still remain throughout the day.
AIRMET Zulu remains in effect for moderate icing between 140-FL200 from Maui eastward to Big Island, but conditions will likely diminish later today.
A low pressure system that is currently north-northwest of the main Hawaiian Islands continues to draw moisture across the area this morning. Showers are continuing across the central and eastern coastal waters, though upper-level support is expected to diminish today. A trough will linger in the vicinity of the islands into early next week, however, keeping winds lighter than seasonal average. Additional support for showers and isolated thunderstorms will return to the region by tonight into Sunday. East of the trough, moderate to fresh southeasterly winds will prevail, while winds west of trough will be light and variable, which may become southerly next week but remain generally light.
As southerly winds continue to decline today, surf along south- facing shores will return smoother, less choppy conditions. Additionally, the medium-period south swell will gradually decline through the weekend. By Tuesday, however, a new south swell will arrive, once again providing a boost to surf along south facing shores.
A moderate, short to medium-period northwest swell generated by the gale force low to the northwest will bring a boost to surf along north and west facing shores today. Another northwest reinforcement on Sunday will maintain this small to moderate surf through the weekend, followed by a decline in northwest swell energy next week.
Surf along east facing shores remains below seasonal average with lighter than average trade winds near and upstream of the islands forecast through next week.
Flood Watch through Monday afternoon for Hawaii.
