How long after surgery do you have to wait to swim?

Talk to your surgeon, but usually they want the incisions fully healed so 4 - 6 weeks is common. With that said I didn't even think about it and I went swimming 3 weeks out and was fine. Depending on where you swim you may want to wait longer to be sure healing is complete - the incisions need to be closed or you could get a nasty infection in natural bodies of water.

Keep in mind your lifting restriction too, even though you could swim a month out you may need to be careful of the exertion to not risk a hernia (my lifting restriction was 6 weeks)