FXHW01 KWNH 040934

PMDHI 



Hawaii Extended Forecast Discussion

NWS Weather Prediction Center College Park MD

534 AM EDT Mon May 4 2026



Valid 00Z Tue 05 May 2026 - 00Z Tue 12 May 2026



Another day of breezy trades should persist Monday with some 

windward/mauka showers possible. Then Tuesday, winds are forecast 

to lessen in response to a weak remnant front approaching from the

north. A sea/land breeze pattern may set up with clouds/showers 

following those features. On Wednesday the remnant front may pass 

through most or all of the state and lead to a wind shift with a 

northerly component, though winds remain weak. Moisture does not 

look to be very strong with this feature, but some showers are 

possible. After the remnant front fully dissipates, winds should 

gradually veer for a return to moderate trades by Thursday or 

Friday.



By the weekend, the base of an upper trough may reach southward 

into Hawaii. This pattern favors moisture and instability being 

drawn northeastward across the state ahead of a front to the 

north. Recent ECMWF runs show the front pushing across the western

islands Sunday, while the GFS is a day or so later. Will continue

to monitor the potential for a more active pattern with a frontal

passage and its timing.





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