Thankfully our second dive at the Poor Knights Islands was at a sheltered bay at the main island, so the visibility was noticeably better. I would say the visibility started at 50-60ft (15-20m) and towards the end of the dive at a steep drop off, I would estimate the visibility to be around 100 feet (33m+) which was truly awesome! There were actually a lot more marine life at this dive spot compared to the pinnacle, but the staff said it’s so rare for conditions to dive there, they wanted to do some ‘exploring’ for the first dive. I should also note our dive group were all above the advanced level, most being divemasters or instructors, so we were all keen to try a new spot and go to depths around 100ft deep (33m).
Hopefully you get a good weather window with no swell and no winds, but overall still worth a visit as there are many dive sites for various conditions and lots of protected bays. Exploring by kayak, paddle board or snorkeling are other options for non-divers and included in various tours.