Puna Weather
Monday 28th September 2026
Today and Tuesday less humid with light to moderate east or southeast winds and scattered showers.
Wednesday through Friday warm and humid with light southerly winds and widely scattered showers. VOG is possible.
Nolo is likely at or near peak and the environment as it moves northwest into a vast region of dry air. Surrounded by the dry air Nolo is forecast to slowly weaken over the next week as it sits stalled near Kauai. A strong storm could wall off that dry air but Nolo will also see vertical shear increase and sea surface temperatures decrease as it gains latitude. While stalled to the west of Kauai Nolo's motion is likely to be erratic and that could bring the storm close to Kauai at times. This bears watching. The European model kicks Nolo off to the west this weekend, the GFS keeps it stalled longer.
Nolo is so large and powerful that the recent model runs shows southerly flow to the east of the storm over our island, preventing our trades from returning until Nolo moves away or dies in place. So except for today and Tuesday (we're currently in a gap in the moist flow) the forecast is for warm and humid with light south winds and possible VOG, but not much rain.
There are no tropical threats on the horizon, although we might get remnant moisture from tropical storm Rachel in a couple of weeks.
