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Four tropical cyclones occurred over the western North Pacific and South China Sea in June 2013. Amongst them, Bebinca and Rumbia necessitated the issuance of tropical cyclone warning signals in Hong Kong.
Yagi formed as a tropical depression over the western North Pacific about 1 030 km east-northeast of Manila on 8 June and moved northwards initially. Yagi intensified into a tropical storm on the next day and moved northeastwards. It intensified into a severe tropical storm over the western North Pacific to the east of Okinawa on 10 June, reaching its peak intensity with an estimated sustained wind of 90 km/h near its centre. Yagi weakened into a tropical storm over the seas south of Japan on 11 June, and turned to move east-northeastwards on the following day. Yagi dissipated over the seas south of Japan on 13 June.
Leepi formed as a tropical depression over the western North Pacific about 660 km east of Manila on 17 June and moved north to north-northwestwards. It intensified into a tropical storm on the following day. Leepi crossed the seas east of Taiwan and reached its peak intensity with an estimated sustained wind of 85 km/h near its centre on 19 June. It moved in a northerly direction across the East China Sea on 20 June. Leepi turned to move northeastwards and dissipated over the seas to the west of Kyushu, Japan on the following day.
Bebinca formed as a tropical depression over the central part of the South China Sea about 560 km south of Dongsha on 20 June and moved north to northeastwards initially. Bebinca took up a northwesterly track and intensified into a tropical storm to the south-southwest of Dongsha on 21 June. It reached its peak intensity with an estimated sustained wind of 85 km/h near its centre and turned to move west to west-northwestwards across the northern part of the South China Sea that evening. Bebinca crossed Hainan Island on 22 June and entered Beibu Wan at night. It gradually turned to move northwards across Beibu Wan on 23 June. Bebinca dissipated inland after making landfall over the coast of northern Vietnam on 24 June.
Rumbia formed as a tropical depression over the western North Pacific about 990 km east-southeast of Manila on 28 June and moved west-northwest to northwestwards. Rumbia intensified into a tropical storm and moved across the central Philippines on 29 June. After entering the central part of the South China Sea on 30 June, Rumbia gradually intensified and moved across the seas south of Dongsha.
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