Puna Weather
Saturday 7th March 2026
Today and Sunday moderate easterly trade winds with widely scattered showers, most likely during the night and early morning hours.
Monday and Tuesday light to moderate southeast winds with widely scattered showers, increasing late Tuesday.
Wednesday through Saturday periods of thunder and rain. Rain is not likely to be persistent, but it could be heavy at times, especially for areas from Hilo south.
High pressure to our northeast continues to drive easterly trade winds (surface chart) through Monday.
A mid/upper-level trough forms to our northwest Monday/Tuesday and deepens Wednesday/Thursday pulling deep tropical moisture over us from the southwest (700-300hPa moisture chart). The trough also brings colder air aloft creating some instability. The combination of abundant moisture (dew points in the lower 70s and precitable water near 2") and colder air aloft (freezing level drops to near mountain top levels) results in periods of heavy rain and isolated thunderstorms late Tuesday through Saturday, though the heaviest rains are likely to favor Kauai and Oahu.
Tuesday the winds over us turn to southerly which should focus the most persistent rains on areas from Hilo south through Saturday.
