Weather on September 21 in Hong Kong
Historical weather data for September 21 in Hong Kong, China
Avg High31°C (87°F)
Avg Low24°C (76°F)
Warmest200531°C
Coldest199719°C
Based on 54 years of data from KING'S PARK
About This Date
September 21st in Hong Kong, China typically brings warm fall weather, with average highs around 31°C and lows near 24°C. Over 54 years of records, the warmest September 21st was in 2005 (31°C average), while the coldest was 1997 (19°C) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 19% of September 21st dates historically, with the wettest September 21st recording 8.54" of rain.
Planning for September 21st in Hong Kong? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 30°C (86°F) | 26°C (79°F) | -- |
| 2024 | 36°C (97°F) | 26°C (78°F) | 0.41" |
| 2022 | 34°C (93°F) | 23°C (74°F) | 0" |
| 2021 | -- | 24°C (75°F) | 0" |
| 2020 | 33°C (92°F) | 25°C (77°F) | 0.05" |
| 2019 | -- | 20°C (68°F) | -- |
| 2018 | -- | 26°C (78°F) | -- |
| 2017 | -- | 27°C (80°F) | -- |
| 2016 | -- | 24°C (76°F) | -- |
| 2015 | -- | 23°C (74°F) | 2.24" |
| 2014 | 31°C (87°F) | 26°C (79°F) | -- |
| 2013 | -- | 24°C (75°F) | -- |
| 2012 | 32°C (89°F) | 23°C (73°F) | 0" |
| 2011 | 28°C (83°F) | 19°C (66°F) | 0" |
| 2010 | 27°C (81°F) | 24°C (76°F) | 0.99" |
| 2009 | 34°C (94°F) | 27°C (80°F) | 0.43" |
| 2008 | 35°C (95°F) | 27°C (80°F) | 0" |
| 2007 | 32°C (90°F) | 26°C (78°F) | 0" |
| 2006 | 33°C (91°F) | 21°C (70°F) | 0" |
| 2005 | 36°C (96°F) | 26°C (78°F) | 0" |
| 2004 | 34°C (93°F) | 23°C (74°F) | 4.93" |
| 2003 | 31°C (87°F) | 26°C (78°F) | 0" |
| 2002 | 33°C (91°F) | 26°C (78°F) | 0" |
| 2001 | 28°C (82°F) | 24°C (75°F) | 8.54" |
| 2000 | 32°C (89°F) | 23°C (74°F) | 0" |
| 1999 | 29°C (85°F) | -- | -- |
| 1998 | 31°C (88°F) | -- | 0" |
| 1997 | 21°C (70°F) | 17°C (62°F) | 5.54" |
| 1996 | 26°C (79°F) | -- | 6.6" |
| 1995 | 27°C (80°F) | 22°C (72°F) | 0" |
| 1994 | 29°C (85°F) | -- | 1.8" |
| 1993 | 33°C (91°F) | 26°C (78°F) | 0" |
| 1992 | 33°C (92°F) | 27°C (80°F) | 0" |
| 1991 | 29°C (85°F) | -- | -- |
| 1990 | 30°C (86°F) | 26°C (79°F) | -- |
| 1989 | 29°C (84°F) | 25°C (77°F) | -- |
| 1988 | 29°C (84°F) | -- | -- |
| 1987 | 27°C (81°F) | -- | -- |
| 1986 | 30°C (86°F) | 24°C (75°F) | 0" |
| 1985 | 27°C (80°F) | 24°C (76°F) | -- |
| 1984 | 30°C (86°F) | 26°C (78°F) | -- |
| 1983 | 33°C (91°F) | 28°C (82°F) | 0" |
| 1982 | 31°C (88°F) | -- | -- |
| 1981 | 30°C (86°F) | -- | -- |
| 1980 | 31°C (88°F) | 25°C (77°F) | -- |
| 1979 | 31°C (88°F) | 25°C (77°F) | -- |
| 1978 | 31°C (88°F) | 25°C (77°F) | -- |
| 1977 | 31°C (88°F) | -- | -- |
| 1976 | 27°C (81°F) | -- | -- |
| 1975 | 31°C (88°F) | 26°C (79°F) | -- |
| 1974 | 31°C (88°F) | 26°C (79°F) | -- |
| 1973 | 30°C (86°F) | 25°C (77°F) | -- |
| 1972 | 31°C (87°F) | 24°C (76°F) | 0" |
| 1971 | 26°C (78°F) | 20°C (68°F) | 0" |