Moderate to locally breezy trades will persist through much of the week as high pressure remains anchored north of the state. A dry and stable air mass will keep windward showers sparse and leeward areas mostly dry. Trades may ease briefly late this week before strengthening again next weekend as high pressure rebuilds to the north. Tropical systems far east of the state will be monitored, but pose no immediate impacts to the islands.
Moderate trades will continue through the forecast period. Clouds and isolated to scattered showers will remain over windward and mauka locations. Conditions will be VFR apart from isolated MVFR over windward and mauka areas in clouds and showers.
No AIRMETs are in effect.
Issued at 312 AM HST Sun Jul 19 2026 Fresh to locally strong trades will continue today, and a Small Craft Advisory (SCA) remains in effect for the typically windy waters around Maui and the Big Island through 6 pm. The trades will ease tonight and Monday as high pressure north of the islands weakens, with the trades then holding at moderate speeds through Tuesday. The trades will restrengthen back to fresh and locally strong speeds Wednesday and Thursday as high pressure strengthens north of the island chain.
Surf along south facing shores will remain a bit below the summertime average today. A larger, south swell is expected to build late today and tonight, then peak around the advisory level Monday into early Wednesday. A High Surf Advisory will likely be required for south facing shores of all islands later today or tonight. As this swell slowly fades during the middle of the week, a new long period south swell will arrive on Thursday, keeping surf elevated through next weekend.
Surf along north-facing shores will remain at flat to tiny levels through next weekend.
Surf along east facing shores will remain close to seasonal levels today, then lower slightly Monday through Wednesday as the trades ease upstream of the islands. East shore surf should then build back close to seasonal levels late in the week through next weekend. Additionally, swell from Tropical Storm Elida may give a slight boost to east shore surf during the middle of the week.
Small Craft Advisory until 6 PM HST this evening for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Maalaea Bay-Pailolo Channel.
