We were there last Thanksgiving (Sat before to Sat after) and it was WAY too cold to swim (for us) except for one day, and on that day my daughter and I got in for a bit but did not stay long. She begged everyday to get in, but you could see the steam rising off the pools and we were wearing coats, hats and gloves to the parks some days!!!! There were a few people swimming some days, none at all others. She was pretty disappointed. But I say take your swim gear, because you never know until the time comes if it will be warm enough then. From what I had read before we went, I thought we'd for sure get in more swimming than that, but it ended up being very cold there this year at Thanksgiving.