We've sailed once at the end of February and another time during the first week of March. Our CC day in February was beautiful - temps were warm and water was plenty warm to swim in. Peter, our CD, noted that it was like a typical June day. Pools were fine that trip. During our March cruise, it was mostly sunny and warm, the water was fine (we're from NE, so maybe that makes a difference), but it was super windy. Our Nassau day that same cruise was cool and gray. We thought about the Aquaduck, but quickly changed our minds - too cold. DS got in the pool for a few minutes, but I was wrapped in a towel watching him by the pool. I think it's really hit or miss that time of year. We still had a ton of fun. There's so much to do on the ship even if it's too cool to swim.