By the time she reached the Azores on 12 December, "Melbourne" had been reassigned to Bermuda as part of the North America and West Indies Station. While on the Station, the cruiser patrolled the western Atlantic from Canada to Brazil. In August 1916, she sailed for Devonport in England, where she spent a month before joining the 2nd Light Cruiser Squadron of the British Grand Fleet, stationed at Scapa Flow. From January until June 1917, "Melbourne" was docked at Birkenhead for major repairs to her propulsion system. The cruiser was fitted with an aeroplane platform in November 1917. On 1 June 1918, "Melbourne" launched her aircraft after sighting German aircraft over Heligoland Bight, but the pilot lost his target in the clouds. At the surrender of the German High Seas Fleet, "Melbourne" was assigned to escort . The cruiser remained with the Grand Fleet until 30 November 1918: during the entire war, "Melbourne" was not involved in any sea battles. Initially, the cruiser was not awarded any battle honours, but a reorganisation of the RAN honours system published in 2010 retroactively awarded the honours "Rabaul 1914" and "North Sea 1916–18" to the ship.