Amy Brooke - news@thelocal.de

Updated: Sun 10 Aug 2025 07:40 CET

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A day tripper jumps out of his floating tyre into the Isar Canal in Munich. Photo: Matthias Balk/dpa

There's little better than cooling off in a river on a warm summer day, but in German cities it can be tricky to know which ones are safe to swim. We've found the cities where you're ok to take the plunge – and a few you're better off avoiding.