Forecast for Big Island Windward and SoutheastShores Tonight Friday Surf Surf PM AM AM PM North Facing 0-2 0-2 0-2 0-2 East Facing 2-4 2-4 2-4 2-4 South Facing 2-4 2-4 2-4 2-4TONIGHT Weather Mostly cloudy. Forecast for Big Island LeewardShores Tonight Friday Surf Surf PM AM AM PM West Facing 0-2 0-2 0-2 0-2 South Facing 2-4 2-4 2-4 2-4TONIGHT Weather Mostly cloudy until 12 AM, then partlycloudy. Kawaihae High 2.4 feet 12:14 PM HST. Swell SummaryBackground medium and long period energy will produce small surf for south facing shores through Friday. A moderate, long period south swell will peak near the High Surf Advisory threshold by the middle of next week.