It is quite difficult to find a sauna in Latvia or Riga if you don’t know where to start. Not all people know that people usually need an invitation from someone who has a shower and Kaugumas (a clubhouse). Here’s one way to find them: use Google maps, type “Sauna,” go to the map center by clicking on it and set map viewpoint as Latvija. When you search for Saunas in Riga, there are no location pins so it means none have been found yet! Keep looking around since most activities are not publically announced but they do happen very often.
As you can see, there are several located in Jurmalas novads.
You can also go to the official website of the Latvian Sauna Society which is quite useless, but it gives you an overview about what saunas are and where they’re located, nothing more.
The best way to join them is to simply knock on their door. The nice thing is that in Latvia, people know each other quite well and are more likely to accept you if you tell them that your friend recommended them a visit. Saunas usually have laconic terms of visiting which are not clearly written anywhere. So it’s good to get an email or call ahead to get directions on how to get there. Friends have visited the saunas in Jurmalas novads which is located right next to Riga.