Strong tradewinds are kicking up surf, seas and blowing some showers over the islands.
The winds are expected to continue at 15 to 30 mph with higher gusts into next week.
The big waves generated by the strong winds prompted a high surf advisory for east shores of Kauai, Oahu, Molokai and Hawaii island until 6 p.m. Friday.
Waves heights are expected to be between 8 and 11 feet and the strong breaking waves, shore break and rip currents will make swimming difficult and dangerous, forecasters said.
A gale warning for the Alenuihaha channel and small craft advisories are also posted for Hawaiian waters and a wind advisory is in effect for Waikoloa and the summits of Mauna Loa and Mauna Kea above 8,000 feet. The temperature atop Mauna Kea at 7 a.m. was 22 degrees Fahrenheit.
Forecasters said winds in upper elevations of the Big Island are blowing at 20 to 30 mph, with gusts to 55 mph.
The east winds are also blowing in some tradewind showers to windward and mauka areas, with some rain clouds moving over leeward areas.
The forecast for south shores of Oahu, including Honolulu, calls for a 50 percent chance of scattered showers today and tonight, with highs between 74 and 84 degrees and lows dropping to 65 to 74 degrees at at night.