The sun was shining and the queue was long when Parkbadet Kronan was to open on Saturday morning.
The weather in particular affects the bath very much.
- That's how it is with an outdoor swimming pool, it is very weather controlled, says Erika Sjöberg.
Just like last year, there are restrictions on the bath.
Visitors do not have access to their changing rooms indoors, instead there are changing rooms and outdoor showers by the bath.
Hear more about the season premiere in the clip above.