Mostly dry and pleasant trade wind weather will continue into Monday, with brief passing showers favoring windward and mauka areas. A significant pattern change is expected by Tuesday as an upper disturbance and surface low pressure evolve northwest of the islands. This system is forecast to draw deep tropical moisture northward over the state, leading to an extended period of southerly winds, increased chances for widespread rainfall, and renewed flooding concerns from the middle of the week through the weekend.
Issued at 417 PM HST Sun Apr 4 2026 Mild to locally breezy trades will continue to prevail through the period. Periodic shower activity along windward sites may briefly bring conditions down to MVFR, however widespread VFR conditions are generally expected. Winds are expected to shift more east and even southeast during the day tomorrow across the islands.
No AIRMETS are in effect and none are expected through the next 24 hours.
Issued at 417 PM HST Sun Apr 4 2026 Moderate to locally fresh trades will persist for the next day or so as high pressure north of the islands moves slowly eastward. Winds will ease and shift southeasterly Monday night through Wednesday as a front stalls out and merges with a trough just west of the islands. The winds will turn more southerly and increase to moderate and strong levels on Thursday as a storm system develops along the trough west of the state.
Small northwest swells will keep some small surf along north facing shores through Monday. A moderate long-period northwest swell will fill in Monday night and Tuesday, giving more of a boost to north shore surf late Tuesday through Wednesday.
A small southerly swell will keep some small surf in place along south facing shores through Monday. A slightly larger, long-period south swell, will fill in Monday night. This swell will give a more noticeable increase to south shore surf Tuesday into next weekend. Strengthening southerly winds could make for choppy seas by late next week.
East shore surf will remain small and below the seasonal average during the next 7 days due to a lack of strong trade winds over and upstream of the islands.
None.
