Just noted your post, and yes I live in Boca. The previous post has it correct, A1A is the best place to ride for safety reasons. The wind in June should not be a problem (barring a hurricane/big storm), the heat and humidity will be. I typically only ride in the mornings due to the heat and the fact that there will be less traffic at that time. The autos will be your worst problem, to many clueless drivers. I have not looked into rental bikes in the area but we do have several good LBS's that could be more helpful. Have a great time.