Dianmu affected the island of Yap which was still recovering after the impact of Typhoon Sudal. The storm produced heavy rainfall, rough seas and gale-force winds but did little damage. A weather station in Yap reported a 95 km/h (59 mph) gust. Dianmu then brushed past Ulithi Atoll dropping 102.8 mm (4.01 inches) of rain over the atoll. A weather station in Palau reported 121.7 mm (4.76 inches) of rain from the Dianmu's passage. Overall, there were no reported damage from Dianmu's impact on the Ulithi Atoll, Yap or Palau.