Are you interested only in Lisbon? You have a good one in Caparica, a short trip to and from Lisbon (a bus and a train).
There is another in Meco, a little further from Lisboa. I've been in this one, very good facilities!
For camping really in Lisbon, you may want to see this website: lisboacamping.com/index-uk.h...
Have a nice camping experience in Portugal!
i have not camped in Portugal myself but this link may help you!
Yes. Lisoa camping is in the outskirts of town, with public transport, and you have some other nearby. Check roteiro-campista.pt/Lisboa/f...