Absolutely. We've been there in mid-October (mid-upper 80's) and we've been there in mid-November (high 70's to mid-80's) , and we always set aside one day to do the water parks. So temps are not a problem. Looking at park hours for the same months from prior years, the hours should be 10:00 - 6:00 for Sept and 10:00-5:00 for October.