In 2026, the warmest waters in Victoria, Australia, are typically found in the shallow, sheltered bays of Port Phillip Bay and Western Port Bay. Places like Mount Martha, Safety Beach, and Dromana on the Mornington Peninsula feature shallow sandbars that heat up quickly under the summer sun, often reaching temperatures of 21°C to 23°C by late February. For a more unique experience, the Metung area in the Gippsland Lakes also offers warmer, still-water swimming compared to the wild, Southern Ocean-facing beaches like Torquay or Bells Beach. If you're looking for "naturally" warm water regardless of the season, the Peninsula Hot Springs in Fingal provides geothermal pools that are warm year-round. However, for a traditional beach day, the north-facing beaches of the Mornington Peninsula are your best bet for avoiding the icy currents of the Bass Strait and enjoying a more temperate dip in the ocean during the Victorian summer.