So water temp on Monday November 1 was 74-75°. I saw 74° over by the marina and 75° was out about 12 miles out towards the 16-180 and also saw 75° in Cholla Bay at Tucson Beach.
Saw plenty of life snorkeling. Bunch of different grunts, sergeant majors, I think anchovy. From a few years of experience I'd say the flounder are officially in the water now. It's turning this week. I bet water temp falls off another 3 degrees this week or in the next 10 days. Earliest I've caught a flounder is November 10. But I know people that catch them in late October depending on where you are in RP.