Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
217 AM EDT Fri May 22 2026

Valid 00Z Sat 23 May 2026 - 00Z Sat 30 May 2026

Prevailing trade wind pattern will maintain continuity in the
forecast across the Islands for holiday weekend into the middle of
next week. Surface ridge will remain centered north of the
Islands along approximately 35N allowing for maintenance of 
moderate to strong trades within proximity to the island chain.
PWAT values are expected to hover between normal to slightly
below seasonal norms, with values generally around 1-1.3" for the
entirety of the forecast. Climatological precip distribution
expected across the Islands through the entire period with PoPs
ranging from 30-60% over windward and mauka locations and
generally less than 15% across leeward areas.

Kleebauer