| Precipitation | Storm | Location | Ref. | ||
|---|---|---|---|---|---|
| Rank | mm | in | |||
| 1 | 632.0 | 24.90 | Haikui 2023 | Hong Kong Observatory | [1] |
| 2 | 616.5 | 24.27 | Sam 1999 | Hong Kong Observatory | [1] |
| 3 | 597.0 | 23.50 | July 1926 Typhoon | Royal Observatory, Hong Kong | [1] |
| 4 | 562.0 | 22.13 | June 1916 Typhoon | Royal Observatory, Hong Kong | [1] |
| 5 | 530.7 | 20.89 | Agnes 1965 | Royal Observatory, Hong Kong | [1] |
| 6 | 519.0 | 20.43 | Agnes 1978 | Royal Observatory, Hong Kong | [1] |
| 7 | 516.1 | 20.32 | Ellen 1976 | Royal Observatory, Hong Kong | [1] |
| 8 | 497.5 | 19.59 | Dot 1993 | Royal Observatory, Hong Kong | [1] |
| 9 | 491.7 | 19.36 | Dot 1982 | Royal Observatory, Hong Kong | [1] |
| 10 | 480.9 | 18.93 | Helen 1995 | Royal Observatory, Hong Kong | [1] |
