A high surf advisory has been extended until at least Monday 6 p.m. for the east-facing shores of the major Hawaiian islands.

“Rough and dangerous” surf of 6 to 10 feet is forecast, the National Weather Service said.

A small craft advisory also is in place for all Hawaiian waters, with east winds of 23 to 35 mph and 12-foot seas.

The winds will be even stronger — up to 40 mph, with 50 mph gusts — over parts of Maui County and Hawaii island, the weather service said. That wind advisory was set to expire at 6 a.m. today, but could be extended.

The tradewinds are expected to weaken early in the week. Rain may increase during the middle of the week as an upper trough moves over the area, forecasters said.