A high surf advisory has been issued for the eastern shores of most islands, effective through 6 p.m. Thursday.
The National Weather Service says surf of 6 to 9 feet is expected for the east shores of Kauai, Oahu, Molokai, Maui and Hawaii island. The public should be aware of strong, breaking waves and rip currents, making swimming more difficult and dangerous.
Breezy tradewinds are here to stay throughout the week, forecasters said, and are expected to ramp up late tonight, becoming particularly windy Wednesday and Thursday, due to a high pressure system north of the state.
A wind advisory may eventually be required for portions of the state during this peak in trades, the weather service said.
Forecasters expect today to be partly sunny, with scattered windward showers and highs from 83 to 88 degrees. Tonight is expected to be mostly cloudy, with scattered showers and lows from 71 to 76.
Tradewinds will continue to blow from 15 to 25 mph through tonight, and strengthen to 30 mph on Wednesday.
The tradewinds should lessen Friday through the weekend as the high pressure system weakens, lowering to moderate levels by Sunday
Surf along eastern shores is expected to rise to 7 to 10 feet on Wednesday as strong winds result in rough and choppy conditions over the next few days.
Surf along all other shorelines will remain below advisory levels through the weekend.
Surf along north and west shores will be between 2 to 4 feet today, lowering to 1 to 3 feet on Wednesday. South shore surf is expected to remain at 1 to 3 feet through Wednesday, forecasters said.
The weather service issued a small craft advisory for most Hawaii island waters, Pailolo Channel, leeward and windward Maui County waters, Maalaea Bay, leeward, northwest and windward Kauai waters, Kaiwi Channel, and windward and leeward Oahu waters, through 6 p.m. Thursday.
A gale watch for Alenuihaha Channel, due to east winds of 30 to 35 knots and possible seas of 8 to 12 feet, is in effect from 6 p.m. today through Wednesday afternoon.