Puna Weather
Friday 19th September 2025
Tonight and early Friday only a few showers.
Increasing humidity through the day Friday with scattered showers by night.
Saturday through Monday humid with showers, possibly heavy at times.
Tuesday through Thursday humid at times with periods of showers.
Light to moderate easterly trade winds turning to northeasterly Friday and Saturday, then back to easterly on Sunday.
An old frontal boundary is sagging south and towards us bringing high moisture and some instability. The old front also brings northeast winds which will favor windward showers for most areas beginning late Friday... maybe not Kau at first. After a couple of days the trades return to easterly, but with continued moisture, so even Kau should get showers Sunday and beyond.
The front is looking pretty energetic, especially the portion forecast to pass over us. During the day today a shallow low formed along the boundary. While this feature may not persist as the front approaches, the presence of the low and the abundant convection behind it are good indicators of this being a good rain event for us.
