High surf kept lifeguards busy Monday, and rescuers are urging non-expert surfers to stay out of the water.
On the North Shore, lifeguards completed 790 preventive actions and four rescues.
On west-facing shores, there were 305 preventive actions and two rescues.
"Lifeguards are busy with keeping people back from the shorelines and off of the rocks in places like Sharks Cove," said Shayne Enright, spokeswoman for the Honolulu Emergency Services Department. "The surf is extremely dangerous and only the most experienced surfers with the correct equipment should venture out."
Although a large northwest swell is gradually subsiding, another swell is rolling in, and surf conditions will still be dangerous for most Hawaiian islands, forecasters say.
The National Weather Service has issued a High Surf Warning for north and west-facing shores of Kauai, Oahu and Molokai and north-facing shores of Maui.
The High Surf Warning is in effect from 9 a.m. Tuesday until 6 p.m. Wednesday. Surf is expected to peak Wednesday at 20 to 30 feet along north shores and 12 to 20 feet along west shores.
This comes just days after another swell that brought waves reaching as high as 30 to 40 feet on north shores, with west shores at 15 to 20 feet.