On 10 July 1943, with "Aurora" and two destroyers, "Penelope" carried out a diversionary bombardment of Catania as part of the conquest of Sicily, (Operation Husky, the Allied invasion of Sicily). The flotilla then moved to Taormina where the railway station was shelled. On 11 July, "Penelope" left Malta with the 12th Cruiser Squadron as part of Force H to provide cover for the northern flank of the assault on Sicily. During the remainder of July and August, she took part in various other naval gunfire support and sweeps during the campaign for Sicily.