Wave heights peaked overnight for the central New South Wales coast, while waves are still increasing over northern New South Wales and southeastern Queensland. In Sydney, large waves rumbled through the night as offshore maximum swell heights peaked at 5.5 metres just after midnight. Further south at Eden, offshore maximum swell heights peaked yesterday around midday at 7 metres. This created rough seas for those heading out on boats with reports of a boat being hit by a wave and capsizing off Batemans Bay yesterday. The swell will linger around the same height today for central and southern NSW although the maximum swell height will drop closer to the average swell height. This means there will be less 8ft set waves rolling through the exposed south facing beaches with waves likely to remain around the 4-6ft mark. For northern NSW and southeastern QLD swell heights are still on the rise. Byron Bay is currently experiencing maximum offshore swell heights of 8 metres while north of the border Brisbane is currently recording 5.5 metres. Waves are likely to peak at 6-8ft for both northern NSW and southeastern QLD, with a midday peak for northern NSW and an afternoon peak for southeastern QLD. Offshore islands, Lord Howe and Fraser, are copping the brunt of the large swell with significant beach erosion and dangerous surf conditions. It is best to stay out of the water and well away from surf exposed beaches today. Wave heights will remain large for at least 24 hours after the swell peaks with a gradual easing trend occurring into the end of the working week.