In Okinawa Prefecture, rough waves impacted coastal areas. Rains began to pound Minamidaitō and Kitadaitōjima on July 19. Winds up to were recorded on Nanjō in the early hours of July 21, with being recorded at Uruma and being recorded at Naha. This was enough to down power lines, which affected 860 people in the main island of Okinawa and the villages of Iheya and Izena. In Mainland China, record-breaking rainfall was reported, which caused flooding in the province of Henan. These devastating floods brought the death toll of the 2021 Henan floods to 99. This was caused because of the moisture associated with Cempaka and In-fa, despite being far away. The CMA issued a blue warning over the Fujian coast and north Zhejiang. CMA later upgraded the warning to an orange warning as In-fa moved closer to China. After making landfall, CMA downgraded its warning to a yellow warning as the threat of the typhoon lessened. In Taiwan, the Central Weather Bureau issued a heavy rainfall warning for Kaohsiung, Pingtung County and Hengchun Peninsula and a sea warning for the northern and eastern coasts of the country as In-fa's periphery nears, however it was cancelled at 02:05 UTC (10:05 TST). In the Philippines, In-fa strengthened the annual monsoon, causing heavy rainfall mainly in Luzon. Heavy rainfall and flooding have been reported in some areas. As the typhoon moved southwest towards the Philippine Sea, PAGASA raised a Signal No. 1 warning for the province of Batanes and the Babuyan Islands in preparation of strong winds and heavy rainfall. The warnings were later lifted as it exited the PAR.