Weather on September 21 in Tokyo
Historical weather data for September 21 in Tokyo, Japan
Based on 55 years of data from TOKYO
About This Date
September 21st in Tokyo, Japan typically brings pleasant fall weather, with average highs around 26°C and lows near 20°C. Over 55 years of records, the warmest September 21st was in 2004 (29°C average), while the coldest was 1974 (18°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 47% of September 21st dates historically, with the wettest September 21st recording 3.39" of rain. The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
Planning for September 21st in Tokyo? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2026 | 27°C (81°F) | 22°C (71°F) | -- |
| 2025 | 31°C (87°F) | 20°C (68°F) | -- |
| 2023 | -- | 23°C (74°F) | 6 mm |
| 2022 | -- | 17°C (62°F) | 35 mm |
| 2021 | -- | 18°C (65°F) | 0 mm |
| 2020 | 26°C (78°F) | 20°C (68°F) | 4 mm |
| 2019 | 24°C (75°F) | -- | 0 mm |
| 2018 | -- | 16°C (60°F) | 59 mm |
| 2017 | 29°C (85°F) | 19°C (67°F) | 0 mm |
| 2016 | 23°C (74°F) | 18°C (64°F) | 70 mm |
| 2015 | 28°C (82°F) | 19°C (67°F) | 0 mm |
| 2014 | -- | 17°C (62°F) | 0 mm |
| 2013 | -- | 22°C (71°F) | 0 mm |
| 2012 | 27°C (80°F) | -- | 0 mm |
| 2011 | 26°C (79°F) | 17°C (63°F) | 62 mm |
| 2010 | 32°C (89°F) | 23°C (74°F) | 1 mm |
| 2009 | 23°C (74°F) | 19°C (66°F) | 0 mm |
| 2008 | 25°C (77°F) | -- | 0 mm |
| 2007 | 32°C (89°F) | 24°C (75°F) | 0 mm |
| 2006 | 29°C (85°F) | -- | 0 mm |
| 2005 | 25°C (77°F) | 23°C (73°F) | 0 mm |
| 2004 | 32°C (90°F) | 26°C (79°F) | 0 mm |
| 2003 | 17°C (62°F) | -- | 86 mm |
| 2002 | 27°C (81°F) | 18°C (65°F) | -- |
| 2001 | 22°C (71°F) | -- | 9 mm |
| 2000 | 29°C (84°F) | 22°C (71°F) | -- |
| 1999 | 27°C (81°F) | -- | 20 mm |
| 1998 | 30°C (86°F) | 25°C (77°F) | 3 mm |
| 1997 | 22°C (71°F) | 18°C (64°F) | 3 mm |
| 1996 | 25°C (77°F) | -- | 7 mm |
| 1995 | 24°C (76°F) | 17°C (62°F) | -- |
| 1994 | 27°C (81°F) | -- | -- |
| 1993 | 21°C (70°F) | -- | 2 mm |
| 1992 | 23°C (74°F) | -- | -- |
| 1991 | -- | 17°C (62°F) | 1 mm |
| 1990 | 26°C (78°F) | -- | -- |
| 1989 | 24°C (75°F) | 19°C (66°F) | 2 mm |
| 1988 | 27°C (80°F) | 22°C (71°F) | 0 mm |
| 1987 | 27°C (80°F) | 19°C (67°F) | 0 mm |
| 1986 | 25°C (77°F) | 18°C (65°F) | 1 mm |
| 1985 | 26°C (78°F) | 21°C (70°F) | 1 mm |
| 1984 | 26°C (78°F) | 21°C (70°F) | 6 mm |
| 1983 | 23°C (74°F) | 19°C (67°F) | 4 mm |
| 1982 | 29°C (84°F) | 19°C (67°F) | 0 mm |
| 1981 | 24°C (76°F) | 18°C (65°F) | 2 mm |
| 1980 | 26°C (78°F) | 21°C (69°F) | 0 mm |
| 1979 | 27°C (81°F) | 22°C (71°F) | 13 mm |
| 1978 | 24°C (75°F) | 21°C (70°F) | 1 mm |
| 1977 | 30°C (86°F) | 22°C (72°F) | 0 mm |
| 1976 | 24°C (76°F) | 17°C (62°F) | 11 mm |
| 1975 | 32°C (90°F) | 26°C (78°F) | 0 mm |
| 1974 | 22°C (71°F) | 16°C (60°F) | 0 mm |
| 1973 | 25°C (77°F) | 20°C (68°F) | 2 mm |
| 1972 | 27°C (80°F) | 17°C (63°F) | 0 mm |
| 1971 | 22°C (71°F) | 17°C (62°F) | 5 mm |