Hi Helene, 
 
Glad to hear from you again.
 
 
HM> I have heard of diving of California to be fine. But I did have a fe
HM> diving buddy from California on our Princess cruise this winter. She
HM> quite experienced and really enjoyed the Carrabians. However I do no
HM> much about what she said about diving in California. Is it possible 
HM> water is colder than the golf of Mexico?
 
Much colder, Although my experience was in Hawaii, California diving 
requires a 6mm to 7mm wetsuit thickness due to the temperatures are in 
the 50's.
 
 
HM> waters can reach near 80ø, but usually hovers around  70øF at the su
HM> Since we have thermocline at about 25 feet, we must use wetsuits all
HM> for deeper dives.
HM> We are trying to plan a houseboat, diving trip in the Thousand Islan
HM> Kingston Ontario, for Labour Day weekend. I did not dive all summer,
HM> work. I have to check my equipment this week.
 
You've got much warmer diving than we do.  except maybe our local lakes 
but much warmer than the coast.  
 
Enjoy your labor day weekend, Hope to talk to you again soon and dive 
safely.  
 
Marianne(CA-USA)
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