There is a lot of where you live and individual susceptibility. I'm pretty good down to the mid-50s. Since I live in SoCal(like Dan), I can swim year round in the ocean without a wetsuit. Other folks live in places where the winter water gets too cold or are more susceptible to cold water so it doesn't work as well for them.
Trust me, if the water got to 52 or colder, I'd be wearing a wetsuit or swimming in pools all the time. Probably the latter.
There is a lot of where you live and individual susceptibility. I'm pretty good down to the mid-50s. Since I live in SoCal(like Dan), I can swim year round in the ocean without a wetsuit. Other folks live in places where the winter water gets too cold or are more susceptible to cold water so it doesn't work as well for them.
Trust me, if the water got to 52 or colder, I'd be wearing a wetsuit or swimming in pools all the time. Probably the latter.
