7Port Phillip Bay Beaches, Melbourne, Australia

Why It’s the Worst: Pollution and unpredictable water conditions.
Port Phillip Bay in Melbourne is often affected by water pollution from urban runoff, with waste from the city impacting the bay’s water quality.

Although there are many beautiful beaches within the bay, some areas have seen a decrease in water quality, especially after heavy rains. The bay is also known for strong currents and occasional jellyfish swarms, which can make swimming unpleasant and even dangerous.

What to Expect: Cloudy water, possible jellyfish, and uneven beach quality depending on the area and time of year.