Beaches close to SP (São Paulo)

Hi everybody,

I am new in São Paulo and I would like to get recommendations about beaches close to SP. I would like to scape from the city during the weekends but I am not exactly what are good places to spend the weekend. I don´t mind if they are not the best beaches but not far from SP and well communicated by bus!

Any veteran can help me?? I have some friends also interested and everybody interested to come and do this kind of plans can joint us!!

regards,

Antonio