A light land and sea breeze pattern will produce afternoon clouds and spotty showers over land and partial clearing at night. Trade winds will redevelop late Wednesday and strengthen Thursday and Friday, focusing rainfall over windward and mauka areas.
Issued at 334 AM HST Tue Apr 21 2026 Light and variable winds continue across all terminals this morning, triggering land-sea breezes which are expected to persist through midweek. Onshore sea breezes will bring clouds and possible light showers over island interiors this afternoon as peak heating occurs, which may lead to periods of MVFR conditions. Otherwise, VFR conditions prevail.
No AIRMETs in effect.
Issued at 334 AM HST Tue Apr 21 2026 A weak low north of the area extends a trough south toward the islands, which will keep light to locally moderate east-southeast flow in place across the local waters through early Wednesday. Light wind flow should allow for afternoon sea breeze development near the shores. During the latter half of the week, surface high pressure building north of the area will bring a return of moderate to locally strong northeasterly trade winds.
A small, medium-period, northwest swell build today, providing a small bump to surf along north and west-facing shores. At least one other northwest swell of similar size and period arrives late today which will support elevated surf along west-facing shores through mid-week.
A moderate, medium-period north-northeast swell also arrives today and peaks on Wednesday, bringing moderate surf to north-facing shores, before slowly declining through the end of the week. East- facing shores will see an increase in surf with wrap from the north-northeasterly swell, despite below seasonal average trade winds. Strengthening trades late this week will support closer to seasonal average surf for east facing shores into the weekend.
Surf will continue to be small along south facing shores through the period.
None.
