Weather on September 21 in Bangkok
Historical weather data for September 21 in Bangkok, Thailand
Based on 55 years of data from BANGKOK METROPOLIS
About This Date
September 21st in Bangkok, Thailand typically brings hot fall weather, with average highs around 33°C and lows near 25°C. Over 55 years of records, the warmest September 21st was in 2015 (33°C average), while the coldest was 1978 (26°C) — a 13°F range across recorded history. Rain or other precipitation has occurred on about 69% of September 21st dates historically, with the wettest September 21st recording 13.94" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for September 21st in Bangkok? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 33°C (92°F) | 26°C (79°F) | -- |
| 2024 | 33°C (92°F) | 25°C (77°F) | 14 mm |
| 2023 | 36°C (97°F) | -- | 354 mm |
| 2022 | 34°C (94°F) | -- | 85 mm |
| 2021 | 33°C (92°F) | 24°C (76°F) | 48 mm |
| 2020 | -- | 26°C (79°F) | 3 mm |
| 2019 | 30°C (86°F) | 24°C (76°F) | 50 mm |
| 2018 | 34°C (94°F) | 26°C (79°F) | 3 mm |
| 2017 | 37°C (98°F) | -- | 130 mm |
| 2016 | 32°C (89°F) | 24°C (76°F) | 319 mm |
| 2015 | 37°C (99°F) | 28°C (82°F) | -- |
| 2014 | 36°C (97°F) | 27°C (81°F) | -- |
| 2013 | 32°C (89°F) | 24°C (76°F) | 2 mm |
| 2012 | 32°C (89°F) | 24°C (76°F) | 18 mm |
| 2011 | 30°C (86°F) | -- | 15 mm |
| 2010 | 36°C (96°F) | 26°C (79°F) | 0 mm |
| 2009 | 35°C (95°F) | -- | 0 mm |
| 2008 | 32°C (89°F) | 24°C (75°F) | 3 mm |
| 2007 | 31°C (87°F) | 22°C (72°F) | 19 mm |
| 2006 | 34°C (94°F) | 27°C (80°F) | 2 mm |
| 2005 | 34°C (93°F) | -- | 124 mm |
| 2004 | 31°C (87°F) | 26°C (78°F) | 5 mm |
| 2003 | 29°C (85°F) | 25°C (77°F) | 1 mm |
| 2002 | 32°C (90°F) | 23°C (74°F) | 1 mm |
| 2001 | 33°C (91°F) | -- | 48 mm |
| 2000 | 34°C (94°F) | -- | -- |
| 1999 | 33°C (91°F) | 26°C (78°F) | -- |
| 1998 | 32°C (90°F) | 24°C (76°F) | 0 mm |
| 1997 | 33°C (92°F) | -- | 3 mm |
| 1996 | 32°C (90°F) | 26°C (79°F) | 13 mm |
| 1995 | 31°C (87°F) | 25°C (77°F) | 71 mm |
| 1994 | 33°C (91°F) | 24°C (76°F) | 0 mm |
| 1993 | 32°C (89°F) | 23°C (74°F) | 114 mm |
| 1992 | 33°C (92°F) | 25°C (77°F) | 1 mm |
| 1991 | 33°C (92°F) | 26°C (78°F) | 1 mm |
| 1990 | 32°C (89°F) | -- | 15 mm |
| 1989 | 33°C (91°F) | -- | 10 mm |
| 1988 | 33°C (92°F) | 24°C (76°F) | 61 mm |
| 1987 | 32°C (90°F) | 24°C (75°F) | 94 mm |
| 1986 | 33°C (91°F) | -- | 5 mm |
| 1985 | 33°C (91°F) | -- | 1 mm |
| 1984 | 33°C (92°F) | -- | 0 mm |
| 1983 | 33°C (91°F) | -- | 6 mm |
| 1982 | 34°C (93°F) | -- | 0 mm |
| 1981 | 31°C (88°F) | -- | 34 mm |
| 1980 | 34°C (94°F) | 26°C (78°F) | 0 mm |
| 1979 | 32°C (90°F) | 26°C (78°F) | 0 mm |
| 1978 | 27°C (81°F) | 24°C (76°F) | 8 mm |
| 1977 | 33°C (91°F) | 24°C (75°F) | 30 mm |
| 1976 | 33°C (92°F) | 26°C (78°F) | 0 mm |
| 1975 | 34°C (93°F) | 26°C (78°F) | 0 mm |
| 1974 | 32°C (89°F) | 24°C (76°F) | 26 mm |
| 1973 | 32°C (90°F) | 24°C (75°F) | 0 mm |
| 1972 | 32°C (89°F) | 26°C (78°F) | 0 mm |
| 1971 | 33°C (91°F) | 27°C (81°F) | 0 mm |