Trade winds weaken today into the latter half of the week as a trough passes northeast of the islands. The trough also brings an increase in moisture that will produce an uptick in shower activity through Friday. A new potential tropical system is forming southeast of the state. Forecasts from the National Hurricane Center will likely begin Thursday morning.
Issued at 327 AM HST Wed Aug 19 2026 Moderate trades expected through tomorrow. Some windward and mauka SHRA possible with isol MVFR conds. VFR conditions should prevail.
No AIRMETs are currently in effect.
High pressure far northeast of the waters will remain nearly stationary and slowly weaken for the next couple of days. As a trough to the east of the islands passes to the northeast, moderate trades will become light and variable for most waters by Thursday, allowing daytime sea breezes and overnight land breezes to become established. By late Friday, moderate to locally fresh trades will begin to build back into the region as the high drifts southward closer to the island chain and an area being watched closely for potential tropical development nears the state from the southeast.
Surf along south facing shores will remain near or slightly below average through midweek as the current south swells fade. A long period south swell generated from gales just south and east of New Zealand will begin arriving late Thursday into Friday. Surf along east facing shores will continue to fade as background flow becomes weaker. North facing shores will remain tiny throughout the week.
None.
