Haikui was a TS tropical cyclone that formed in the Philippine Sea in 2017. The storm reached maximum sustained winds of 74 km/h (40 kt) with a minimum central pressure of 998 hPa. Tracking across the Philippine Seain the Western Pacific basin (, it potentially affected the Philippines, Taiwan and Japan. The storm traveled from approximately 10.8°107.6° to 17.9°130.5°, crossing a range of 7 latitude and 23 longitude.