On 13 May, "San Francisco" returned to Okinawa, arriving in Nakagusuku Wan and resuming support activities against targets in southern Okinawa. For the next few days, "San Francisco" supported the 96th Infantry Division in an area to the southeast of Yonabaru. On 20 May, she shifted to Kutaka Shima, and by the night of 22 May, she had depleted her supply of ammunition for her main batteries. On 25 May, the Japanese launched a large air attack against Allied shipping in Nakagusuku Wan. On 27 May, "San Francisco" provided fire support for the 77th Infantry Division, and retired to Kerama Retto the next day. On 30 May, the cruiser returned to the western side of Okinawa and, for the next two weeks, supported operations of the 1st and 6th Marine Divisions.