We visit only in the winter months. We will absolutely be riding Splash again, hopefully multiple times, even though I did get absolutely drenched the last time I rode it in March. I was not cold though. Last December, we went on Kali, even though we hadn't planned on it, because it was too hot for us in the AK that day and we wanted to get wet, and we were able to FP it. I don't particularly like being hot, so any day with a high in the 80s or higher is a water ride day to me. No day is a water ride day for my husband, but he is okay with Splash.
I wouldn't ride them without having an hour or so of sunshine left though. The sun dries us off quickly when it's there, but I imagine it'd be chilly if we weren't dry by dark.