Haikui was a C1 tropical cyclone that formed in the Philippine Sea in 2023. The storm reached maximum sustained winds of 157 km/h (85 kt) with a minimum central pressure of 945 hPa. Tracking across the Philippine Seain the Western Pacific basin (, it potentially affected the Philippines, Taiwan and Japan. The storm traveled from approximately 18.2°116.4° to 23.7°144.0°, crossing a range of 6 latitude and 28 longitude.