WNW Fills in Today, Trade Swell Holds
A Small Craft Advisory is posted for leeward and southern Big Island coastal waters and the ʻAlenuihāhā channel through 6 p.m. Thursday for east winds up to 25 knots and seas up to 10 feet.
**Click directly on the images below to make them larger. Charts include: Big Island projected winds, tides, swell direction & period and expected wave heights.**
Hilo side: Wave heights are expected head high today with the best breaks getting up to a few feet overhead from time to time on the sets. Onshore wind will chop it up.
Kona side: Wave heights knee/waist high and up to occasionally chest high with a small west-northwest filling in. Below waist high for spots catching the south-southwest.
South: Most breaks are knee/waist high. Breaks open to the trade swell could still get up to head high or even overhead.
A west-northwest swell is expected to build with knee/waist high waves Wednesday into Thursday and fading late Thursday into Friday. Thursday and Friday the swell will shift more out of the northwest and affect the northeast coast of the Big Island with waist/head high waves. The swell fades over the weekend.
Trade swell holds through the week with head high to overhead surf.
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.