Oslo swimming in July
Traveling soon to Oslo and I think my 11 and 13 year olds would enjoy having a swim in the Oslofjord. Debating between a location along the coast such as Sørenga Sjøbad/Operastranda/Tjuvholmen or taking the ferry to one of the islands such as Hovedøya/Langøyene/Gressholmen.
Leaning towards one of the islands, but would love your advice as to what you think kids my childrens age would find the most fun. Thanks!