
Which Beaches are good for Water Sports in San Francisco
There are a number of beaches marked with swimming lanes, which are ideal for water sports such as wind surfing. West of the Ghiradelli Square, you can find a fairly long stretch of beach, (in front of Maritime Museum), where you can have lot of fun.
You may even see folks swimming without wetsuits (but it is not advisable though).
Note: The water is damn cold and there are sea lion and giant sea mammals around that area, so be careful when you go in!
Here's a handy link, which will give you more details about the same:
http://www.virtualtourist.com/travel/North_America/United_States_of_America/California/San_Francisco-755471/Sports_Travel-San_Francisco-Water_Sports-BR-1.html

