We were there early Dec. 2004 at BC and it was really too cold to swim, most of the time-especially in Stormalong Bay. One of the other pools was warmer. It did seem to vary day by day. Some days it was nice and warm, next day, seemed 10 degrees cooler. During that trip it was in the 40's in the evening and not much warm in the day. We wore our thermals alot. However, we did swim several times-it's my DD fav thing.
This Jan. we stayed at Pop Century in the 50's bldg. and oh boy was it cold! We still swam a few times but getting out was verrrrrrrrrrrrrrrry brisk!
So that being said, it depends on how badly you want to swim, and oh yeah, jacuzzi-ing even when it's cold is great.
56 days and counting