Remnant low Fausto will continue to shift far northwest of the area today. A strong high will build in from the north allowing trade winds to strengthen from east to west across the state today reaching breezy levels by this afternoon and evening. Trades will further strengthen Friday into Saturday under a dry and stable airmass that could produce very windy downsloping winds that may warrant a Wind Advisory. Trades will ease back to the usual breezy levels Sunday into early next week as the high weakens. Typical summertime showers are expected for windward and mountain areas.
Moderate to locally breezy trades will spread from east to west across the island chain today as remnants of tropical cyclone Fausto passes further to the northwest of the state. Meanwhile, an area of enhanced low level moisture will bring clouds and showers to mainly windward portions of Kauai through the morning hours. Some MVFR ceilings and visibility in SHRA may accompany this band as it moves over the Kauai. Trades will remain moderate to locally breezy tonight with showers and clouds favoring windward locations.
No AIRMETs are currently in effect as AIRMET SIERRA has been cancelled early this morning. AIRMET TANGO will likely be issued by this afternoon over and immediate S through W of the eastern islands.
Issued at 346 AM HST Thu Jul 30 2026
Variable to light northerly winds will yield to east-southeast to easterly trades building in from east to west across the state today as Fausto's remnant low exits off to the northwest. A Small Craft Advisory (SCA) is in effect through Friday night for strong trade winds throughout the windier waters of Maui County and the Big Island. Trades strengthen through the weekend, which could necessitate an expansion of the SCA to the rest of the coastal waters later on. A weakness in the ridge of high pressure develops on Sunday, which will cause trade winds to weaken again for early next week.
A medium period south swell peaking today will bring south shore surf around the summer average (5-6ft). Surf then fades gradually through the weekend while a mix of small south swells maintains surf slightly below the seasonal average.
Surf along east shores will trend up tonight into the weekend due to a combination of building short period trade wind swell and renewed medium to long period east swell emanating from Hurricane Genevieve in the East Pacific. North shores will see flat to tiny surf through early next week as a weakening Post-Tropical Cyclone Fausto moves away from the islands and no significant north swells are forecast.
Small Craft Advisory until 6 AM HST Saturday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Maalaea Bay-Pailolo Channel.
