Puna Weather
Thursday 8th October 2026
Today warm and humid with moderate southerly winds and scattered showers, possibly briefly heavy at times.
Tonight warm and humid with moderate southerly winds and numerous showers, likely heavy at times.
Friday warm and humid with light southeast winds and scattered showers, possibly briefly heavy at times.
Saturday and Sunday much less humid with widely scattered showers and moderate easterly trade winds.
An upper level trough to our northwest is pulling tropical moisture over us today and Friday. The atmosphere is pretty stable and there is only slight low level convergence (winds blowing towards each other). These factors and the unfavorable rain direction, south winds, limit our total rainfall today and tonight. The moisture level is forecast to be quite high with PW >2" and dew point 74F during the peak of moisture influx tonight and early Friday, so despite the limiting factors, heavy rains are possible.
The upper level trough weakens and lifts north (200mb loop) allowing trade winds to rebuild over our island this weekend (surface winds loop). These trades usher in drier air with dew points droping nearly 10F (:
A mid-level low (10,000') approaches from the east this weekend. The low is currently forecast to stall just to our west (700mb loop), placing us in moist southerly flow once again. This is the kind of scenario where heavy rains could set up along north-south oriented convergence bands, possibly over portions of our island Monday and Tuesday.
