The National Weather Service has posted a high surf advisory for most north and west facing shores across the state Wednesday.
The advisory will remain in effect until 6 p.m. Friday.
Forecasters say waves on north shores will be rising to 16-to-22-feet-high Wednesday night and Thursday. Surf on west facing shores will increase to 12-to-16-feet-tall.
On the Kona and Kohala coasts on the Big Island, surf will rise to 6-to-8-feet-tall on Thursday.
Large breaking surf and significant shore break and dangerous currents could make entering the water very dangerous. Boaters should be aware of an increased number of surfers and body boarders utilizing harbor channels to access surfing areas.