John Eaton wrote:
from
www.ussartf.orgWater Temperature 60–70° F (16–21° C)
Exhaustion or Unconsciousness in 2–7 hours
Expected Survival Time 2–40 hours
May be a borderline venue depending on how many potential rescuers are in the area if you get in to trouble.
this is really just not true. i've been surfing for years, and haven't worn a wetsuit since '98. The water gets down to the low fifties here in the dead of winter (when we get our only regular surf that doesn't come from hurricanes) with air temps around the same. i can sit IN the water on my board for a three hours before i start getting confused.
if i'm bodysurfing, i can be in the water up to my neck for about an hour or two on days like this.
if the water hasn't dipped below 60 yet, i can be in it all day with no noticeable effects.
obviously all this varies from person to person, but it's my humble opinion that unless you live in wisconsin, you probably don't really need a wetsuit. people surfed for years in the 40 degree waters off of san francisco before wetsuits were invented (the rubber shirts people had at that time were warm, but so hard to put on and take off that most people didn't bother with them).