The system dissipated over the mountainous coastline of eastern China and merged with a cold front on August 7.

High rainfall from Kammuri affected large portions of China, particularly in Guangdong Province where it moved ashore.

Rainfall was beneficial in alleviating drought conditions in Guangdong, although further inland the rains occurred after months of deadly flooding.

[nb 1] The origins of Kammuri are uncertain; they were possibly related to the monsoon trough that moved across the Philippines toward Guam.

Around that time, the system had several weak circulations, one of which persisted in the South China Sea; this center was located east of an area of thunderstorms due to moderate wind shear.

[2] Early on August 2, the Japan Meteorological Agency (JMA)[nb 2] classified the system as a tropical depression to the north of Luzon.

[5] The convection became more concentrated,[3] and the JMA upgraded the depression to Tropical Storm Kammuri late on August 3, to the south of Hong Kong.

[3] An upper-level low connected to a trough weakened the ridge over China, allowing Kammuri to move slowly northward.

[2] Kammuri quickly intensified into a severe tropical storm; the JMA estimated peak 10-minute sustained winds of 100 km/h (65 mph) at 1800 UTC on August 4.

[2] Kammuri quickly weakened to a tropical depression,[3] and the JTWC discontinued advisories at 1200 UTC on August 5.

[2] On August 3, when Kammuri was located about 390 km (240 mi) southeast of Hong Kong, the HKO issued Standby Signal No.

Kammuri dropped heavy rainfall in Hong Kong that reached 280 mm (11 in) in the town of Kwai Chung, most of which fell after the storm passed the region.

[12] Significant flooding from Kammuri occurred inland, related to the storm's remnants' merging with a cold front.

[12] After the storm, thousands of soldiers in the People's Liberation Army placed sandbags and maintained dykes along Dongting Lake, and, by the end of August, most floods had receded nationwide.