Puna Weather
Tuesday 7th July 2026
Today through Wednesday moderate to breezy east or northeast trade winds and widely scattered showers, mostly during the night and early morning hours.
Thursday through Sunday light to moderate easterly trade winds and humid with frequent showers, possibly heavy at times.
A broad ridge to our north will maintain light to moderate trade winds over us for the foreseeable future. A band of tropical moisture currently near 140W is being carried towards us by the low level trade flow and will arrive Thursday bringing humid conditions and the threat of heavy rain.
Drier air filters sometime around Monday for a few days of drier and less humid weather.
The MJO report from today shows a positive signal entering the western Pacific and very slowly making its way into the eastern Pacific over the next two to three weeks. The latest GFS wants to spin up a small cyclone near 140W this weekend. If this happens the storm would be short lived with mid-level dry air and high vertical shear between us and 140W. Remnant moisture could reach our island around Thursday of next week or so... this is worth keeping an eye on.
Long range forecasts show our high shear weakening and lifting north in 10-14 days, increasing the risk of tropical activity, especially with the MJO in the region and positive reinforcement from a strengthening El Nino.
