Moderate to locally breezy trades will taper off Wednesday and Thursday becoming light and variable by this weekend. Shower activity will be kept to a minimum with just a few windward and mauka clouds and showers through the end of the week.
Issued at 815 PM HST Tue Mar 31 2026
Moderate to locally breezy trade winds will continue into tonight. Winds will slightly weaken tomorrow. Isolated showers are possible tonight along windward and mauka areas which may lower ceilings and visibilities to MVFR at times. Otherwise, VFR conditions will prevail.
No AIRMET's are currently in effect.
A 1030 mb high pressure north of Hawaii will elongate and shift eastward through the week, causing trade winds to gradually diminish. The Small Craft Advisory for fresh to locally strong trade winds remains in effect across all Hawaiian waters through Wednesday morning. By that point, a weakening pressure gradient means that strong trade winds are expected to be limited to favored channels only. Winds become moderate to fresh northeasterly for the majority of the waters by this weekend.
Moderate north and east-facing shore surf continues to be generated by a short period north-northeast (020 degree) swell which will gradually diminish tonight and Wednesday as it veers northeast. Shores better exposed to this NNE swell will experience decent wind wave chop generated by solid moderate trades.
Surf along west-facing shores will remain dominated by wrap around from the north-northeasterly swell and will gradually diminish in kind through the week. The next small, medium-period northwest and west-northwest swells arrive this weekend to bring a small bump in surf for west-facing shores. Along south-facing shores, expect continued impulses to sustain small surf through the week.
Small Craft Advisory until 6 AM HST Wednesday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Big Island Windward Waters-Kaiwi Channel-Kauai Channel-Kauai Leeward Waters-Kauai Northwest Waters-Kauai Windward Waters- Maalaea Bay-Maui County Leeward Waters-Maui County Windward Waters-Oahu Leeward Waters-Oahu Windward Waters-Pailolo Channel.
