Breezy trades will gradually weaken through the weekend as a low pressure system developing to the far north weakens the surface ridge over the islands. Clouds and showers will favor windward and mauka areas the rest of today, and to a lesser extent Saturday, before the focus shifts to sea breezes Sunday. Early next week, increasing moisture will move up the island chain from the southeast, increasing rain chances for the state Monday through Wednesday. Moderate to locally breezy trades are expected to return late Wednesday and stay with us through next weekend.
Moderate trades should decrease slightly over the weekend. Low cigs and SHRA along windward and mauka locations. MVFR conds possible in SHRA otherwise VFR prevails.
No AIRMETs in effect.
Moderate to fresh trade winds will steadily ease into the light to moderate range over the weekend as the surface ridge weakens in response to broad low pressure developing near the Aleutian Islands. This will translate to localized land and sea breezes near the coasts late this weekend through early next week. A return of moderate to fresh easterly trades is likely by midweek as the ridge strengthens.
An active pattern is in store for surf along south-facing shores as we head into June due to a series of recent gale- to storm- force lows passing through our swell window near New Zealand over the past week. Expect surf to continue building overnight into Saturday as a long-period south-southwest swell arrives. Our buoys are already reflecting this rising trend with the peak energy registering in the 17-20 second bands this evening. Surf will hover around the advisory level through the weekend. As the swell gradually begins to ease early next week, long-period forerunners from the next south-southwest swell are expected to arrive. Heights may briefly dip below the advisory level Monday night, but as the next swell fills in, surf will likely return to the advisory level Tuesday through midweek as it peaks. A gradual downward trend is then expected through the second half of next week.
A combination of advisory-level surf this weekend and water levels hovering above predicted levels could lead to some wave runup issues, with water sweeping across areas of beaches that typically remain dry. Water levels will steadily lower each day early next week as the next large south swell arrives.
The current small northwest swell will slowly lower through Saturday before fading on Sunday. A small north swell will likely produce surf near seasonal averages along north-facing shores from late Tuesday into Thursday.
Expect surf along east-facing shores to gradually ease through early next week as trade winds become light. A slight increase is possible Tuesday and Wednesday due to a combination of rebuilding trade winds and a wrapping north swell.
High Surf Advisory until 6 PM HST Sunday for Big Island South- Big Island Southeast-East Honolulu-Ewa Plain-Honolulu Metro- Kahoolawe-Kauai South-Kauai Southwest-Kona-Lanai Leeward-Lanai South-Maui Central Valley South-Maui Leeward West-Molokai Leeward South-Niihau-South Haleakala-South Maui/Upcountry- Waianae Coast.
