Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
509 AM EDT Sat Jul 4 2026

Valid 00Z Sun 05 Jul 2026 - 00Z Sun 12 Jul 2026

Guidance continues to agree that broad surface high pressure will
remain in place to the north of the state with persistent 
moderate trade winds expected into next week. This will favor 
Upslope/Mauka showers each day. A plume of higher moisture 
associated with a tropical wave may reach the islands later next 
week bringing a brief increase in shower chances/rainfall before 
drier conditions return into the weekend. Some gustier trade winds
may accompany the wave as well. 

Putnam