A weakening high pressure ridge north of the Hawaiian Islands will keep trade wind speeds on the decreasing trend lasting into Saturday, then ridge and wind speeds strengthen from Saturday afternoon into early next week. Passing showers are possible over windward and mountain areas during this time period, mainly during the overnight to early morning hours. The next best chance for statewide rainfall may develop from Monday into Tuesday of next week, as the cloud remnants from an old cold front drift across the islands on the trade winds.
Breezy trade winds along with light windward showers will continue today into Saturday. Brief MVFR ceilings and visibility are possible in any passing shower.
AIRMET Tango is in effect for low level moderate turbulence downwind of terrain. AIRMET Sierra is in effect for mountain obscuration over windward areas of Oahu Molokai and Maui. Mountain obscurations should generally decrease during the day today.
Issued at 342 AM HST Fri Nov 13 2026 A high pressure system north of Hawaii will slowly weaken today, decreasing wind speeds across the marine areas. The Small Craft Advisory (SCA) has been trimmed back slightly and no longer includes the Northwest Kauai, Leeward Kauai, and Leeward Oahu zones as winds have begun to diminish in response to weakening of the high pressure and seas have fallen below 10 ft with a fading north-northwest swell. These areas will still see conditions near, but not meeting, the small craft criteria this morning. Otherwise, the SCA is in effect for the remaining coastal waters. By tonight, the winds diminish and seas subside enough to drop all but the typical windy waters near Maui County and the Big Island from the SCA. Late this weekend, high pressure restrengthening northeast of the islands may bring strong winds back to all waters Sunday into Monday.
A moderate, north-northwest swell will continue to decline today into the weekend. Moderate surf for north and west-facing shores will decrease to small levels by tonight. A new small, north-northwest swell will support continued small surf into Saturday before the arrival of a more significant north swell. This moderate, long-period north swell arriving Saturday night may push surf back to advisory levels on Sunday for north and west-facing shores. Surf to at least moderate levels will last into Monday before the swell really begins to fade on Tuesday.
Surf along east-facing shores will remain rough and choppy due to the strong trade winds today. East-facing shores may decrease slightly tonight and Saturday as trades ease early this weekend, but will increase again Sunday into early next week as trades restrengthen. South shore surf will stay tiny to small for the next few days.
Small Craft Advisory until 6 PM HST this evening for Big Island Windward Waters-Kaiwi Channel-Kauai Channel-Kauai Windward Waters-Maui County Leeward Waters-Maui County Windward Waters- Oahu Windward Waters.
Small Craft Advisory until 6 PM HST Saturday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Maalaea Bay-Pailolo Channel.
