HONOLULU, Hawaii (HawaiiNewsNow) - A trade wind weather pattern has taken over and will last through the middle of next week. Scattered showers will favor windward and mountain areas of each island. Additional tropical moisture moving up from the southeast will enhance shower activity a bit from Sunday into Monday. The Big Island and eastern Maui will likely see the highest increase in shower activity on Sunday afternoon. Deeper tropical moisture and instability will spread to the other islands from Sunday night to Monday. More typical trade wind weather returns by the middle of next week.
The forerunners from the first of a series of long-period south- southwest swells are expected to spread across the area starting early Friday morning. The surf produced by these large swells is will gradually increase along south facing shores by this weekend, and will likely reach the High Surf Advisory (HSA) criteria starting Saturday. Based on the latest guidance, this elevated surf is expected to persist along south facing shores into next Monday.