Large NNW Swell Begins to Build Today

Image: James Grenz

Marine Alerts (as of 1:00 a.m.)

There are no marine alerts posted at this time. We anticipate a Small Craft Advisory and at least Advisory level surf.

Check our breaking news section for any weather alerts or updates that may have popped up since this forecast was posted. 

**Click directly on the images below to make them larger. Charts include: Big Island projected winds, tides, swell direction & period and expected wave heights.**

Big Island Surf Forecast

Hilo: Wave heights are expected to be around shoulder / head high today as a new swell fills in.

Kona: Wave heights are expected to be under waist high today.

South: Wave heights are expected to be under waist high today.

Our current north-northwest swell continues to ease today. An even larger north-northwest has already showed up on some buoys and is expected to fill in Tuesday, peak Tuesday night into Wednesday and bring another round of warning level surf to the state. Lots of variation for this swell since it’s coming from 330°… some spots are expected to reach advisory level depending on how exposed they are.

A cold front is forecast to move down the island chain today.

Keep in mind, surf heights are measured on the face of the wave from trough to crest. Heights vary from beach to beach, and at the same beach, from break to break.  

**Click here for your detailed Big Island weather report.**

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA

Image: NOAA