Puna Weather
Friday 15th May 2026
Today and Saturday light to moderate southeast winds and humid with periods of rain and thunder. Rain could be heavy at times.
Sunday through Wednesday light to moderate easterly trade winds with scattered showers, mostly during the night and early morning hours.
At the surface a broad ridge to our north keeps east or southeast flow over us for the next week (surface animation) or two.
An upper level trough is approaching from the north this morning (upper level water vapor satellite animation). Recent model runs have trended farther south with this feature bringing some colder air aloft to our island for the risk of thunder and heavy rain. The deepest moisture associated with the mid-level southwest flow is likely to remain just offshore to our east, but a slight change in the position of the upper level trough could bring this moisture to our shores (700-300hPa mid-level moisture chart).
Late Friday/Saturday low level convergence supports rising motion in the lower levels of the atmosphere. This should be our period of greatest rainfall.
The trough moves off to the northeast on Sunday for less rain, but another, weaker, trough passes by to our north early next week. With low level moisture still in place, this trough is sufficient to keep windward showers in the forecast through Wednesday.
