HONOLULU (HawaiiNewsNow) - Mostly dry conditions along with light winds will prevail across the state through the second half of the week and upcoming weekend. The best rainfall chances will remain over windward sections of Maui and the Big Island through Thursday where remnant moisture associated with an old frontal boundary and light trades exist. Daytime sea breezes and overnight land breezes will overpower a rather weak trade wind flow elsewhere each day.
A long period moderate to large north-northeast swell will build through Wednesday morning, peak in the afternoon and evening, then decline Thursday and Friday. As the swell builds, it will likely cause seas to reach the Small Craft Advisory (SCA) threshold across exposed windward waters and channels Wednesday, so the SCA will go into effect at 6 AM. And since the swell has an easterly component, surf heights may reach the High Surf Advisory (HSA) level along east facing shores.
A new large northwest swell will spread across the waters adjacent to the western end of the island chain late Friday night. This swell will likely increase seas above the SCA threshold across exposed waters from Saturday through Sunday. Surf is also expected to be near the High Surf Warning criteria along most north and west facing shores of the smaller islands this weekend.