"Sumner" resumed her normal west coast operations in early April 1924 and was so employed until mid-1925. On 1 July 1925, she joined the Battle Fleet and a division of light cruisers from the Scouting Force in departing Pearl Harbor for a cruise to Australia and New Zealand. The force visited Pago Pago, Samoa, then continued on to Melbourne and Sydney, Australia, and to Auckland, Lyttelton, Wellington, and Dunedin, New Zealand. The fleet returned to the west coast on 26 September, and "Sumner" resumed training duties and patrols.