The Weather Prediction Center

College Park, MD

Hawaii Extended Forecast Discussion

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
349 AM EDT Sat May 28 2022

Valid 00Z Sun May 29 2022 - 00Z Sun Jun 05 2022

Relatively dry and quiet weather is likely over Hawaii for the
next week or so, as an upper-level high to the east of the state
through this weekend gradually drifts westward atop Hawaii next
week. At the surface, high pressure is in place to the northeast
of the state, leading to moderate easterly trade winds through the
day Saturday. This high is forecast to drift farther northeast
away from Hawaii this weekend into early next week while the
associated surface ridge shifts into the islands, weakening the
trades. This will allow for afternoon sea breezes and nighttime
land breezes to set up, along with some potential for showers even
over interior and leeward areas. These are expected to be only
scattered and light given normal to below normal moisture levels
for the most part. Kauai to Oahu may see a period of slightly
above normal moisture levels around Sunday coincident with a
possible weak upper trough, though this is looking less likely and
may mostly cause cloudiness across the state rather than showers.
As surface high pressure redevelops north of the islands next
week, more moderate trade winds should redevelop, making windward
and mountain areas more of a focus for limited showers that occur
in the dry pattern.


Last Updated: 349 AM EDT Sat May 28 2022