Sunny skies over Oahu Wednesday morning are likely to turn cloudy and rainy by Wednesday night, National Weather Service forecasters say.

The second in a series of weak weather systems is forecast to move over Kauai Wednesday evening and then over Oahu Wednesday night, bringing rains to Honolulu, especially after midnight.

"There’s going to be brief periods of clouds and showers with some periods of clear weather," said Derek Wroe, a meteorologist with the Honolulu office of the National Weather Service. "Timing these features is going to be really difficult."

The forecast for Honolulu and south shores of Oahu calls for scattered showers in the afternoon and more rain Wednesday night, especially after midnight.

Thursday should bring partly sunny skies with numerous showers in the morning, then scattered showers in the afternoon and evening.

Another weather system is expected Friday, bringing more scattered showers.

The weekend should bring sunnier skies and Kona winds on Sunday as another front approaches. 

Showers are likely on Monday or Tuesday when the front arrives.

Winds are from an unusual west direction at 10 to 15 mph on Wednesday. Forecasters expect the winds to shift to the northwest at 10 to 20 mph Thursday.

Wroe said the westerly winds are pushing bands of clouds and showers across the state.

A high wind warning is in effect for the summits of Mauna Kea and Mauna Loa, where localized gusts of more than 95 mph are possible through 6 a.m. Thursday.

Despite the breezy weather, warm and humid conditions persisted over the islands Tuesday. Lihue set a record high temperature for the date with a 90 degree high recorded at the Lihue Airport, smashing the old record of 85 set in 1962. Hilo’s high of 85 degrees tied a record set in 1975,

The heaviest rains Tuesday were recorded at Puu Kukui in Upcountry Maui, where 3.4 inches fell in the 24-hour period ending at 5 a.m. Nearly 2.2 inches fell at Kepuni and the Waikapu Country Club got 1.4 inches. On Oahu, Kahuku recorded nearly 1.9 inches;  and about 1.4 inches fell at Schofield Barracks and the Punaluu Pump.