Weather on September 20 in Seoul
Historical weather data for September 20 in Seoul, South Korea
Avg High26°C (78°F)
Avg Low16°C (60°F)
Warmest200726°C
Coldest198917°C
Based on 53 years of data from SEOUL CITY
About This Date
September 20th in Seoul, South Korea typically brings pleasant fall weather, with average highs around 26°C and lows near 16°C. Over 53 years of records, the warmest September 20th was in 2007 (26°C average), while the coldest was 1989 (17°C) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 23% of September 20th dates historically, with the wettest September 20th recording 7.3" of rain.
Planning for September 20th in Seoul? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 23°C (73°F) | 17°C (63°F) | -- |
| 2022 | 24°C (76°F) | -- | -- |
| 2021 | -- | 19°C (66°F) | -- |
| 2020 | -- | 11°C (51°F) | 0" |
| 2019 | -- | 16°C (60°F) | -- |
| 2018 | -- | 18°C (64°F) | 1.12" |
| 2017 | -- | 14°C (57°F) | 0.79" |
| 2016 | 27°C (80°F) | -- | -- |
| 2015 | 28°C (83°F) | -- | -- |
| 2014 | 28°C (83°F) | 16°C (60°F) | -- |
| 2013 | 28°C (82°F) | 20°C (68°F) | -- |
| 2012 | 24°C (76°F) | 16°C (60°F) | -- |
| 2011 | 23°C (74°F) | -- | -- |
| 2010 | 26°C (79°F) | 18°C (65°F) | 2.79" |
| 2009 | 26°C (78°F) | 17°C (62°F) | -- |
| 2008 | 24°C (76°F) | -- | -- |
| 2007 | 31°C (88°F) | 20°C (68°F) | 1.65" |
| 2006 | 27°C (80°F) | 18°C (64°F) | -- |
| 2005 | 23°C (74°F) | 16°C (61°F) | 0" |
| 2004 | -- | 6°C (43°F) | 0.05" |
| 2003 | 26°C (78°F) | -- | 0" |
| 2002 | 26°C (78°F) | 17°C (62°F) | -- |
| 2001 | 26°C (78°F) | -- | 0.15" |
| 2000 | 28°C (82°F) | 16°C (60°F) | -- |
| 1999 | 18°C (65°F) | 16°C (61°F) | 7.3" |
| 1998 | 32°C (89°F) | -- | 0.51" |
| 1997 | 23°C (73°F) | -- | 0.05" |
| 1996 | 25°C (77°F) | -- | 0" |
| 1995 | 25°C (77°F) | -- | -- |
| 1994 | 26°C (79°F) | -- | 0.2" |
| 1993 | 28°C (83°F) | -- | -- |
| 1992 | 24°C (76°F) | 17°C (62°F) | 0.3" |
| 1991 | 23°C (73°F) | 14°C (57°F) | -- |
| 1990 | 26°C (78°F) | 13°C (56°F) | -- |
| 1989 | 23°C (74°F) | 11°C (51°F) | -- |
| 1988 | 26°C (79°F) | 13°C (56°F) | -- |
| 1987 | 28°C (82°F) | 16°C (61°F) | -- |
| 1986 | 19°C (67°F) | -- | -- |
| 1985 | 19°C (67°F) | -- | 0.05" |
| 1984 | 24°C (76°F) | -- | -- |
| 1983 | 29°C (85°F) | 18°C (65°F) | -- |
| 1982 | 27°C (81°F) | -- | -- |
| 1981 | 29°C (84°F) | 17°C (63°F) | -- |
| 1980 | 27°C (81°F) | 15°C (59°F) | -- |
| 1979 | 27°C (81°F) | 17°C (63°F) | -- |
| 1978 | 26°C (79°F) | 13°C (55°F) | 0" |
| 1977 | 22°C (72°F) | -- | 0" |
| 1976 | 25°C (77°F) | -- | -- |
| 1975 | 24°C (75°F) | -- | -- |
| 1974 | 23°C (73°F) | 12°C (54°F) | 0" |
| 1973 | 25°C (77°F) | -- | 0" |
| 1972 | 24°C (75°F) | 14°C (57°F) | 0" |
| 1971 | 23°C (74°F) | 11°C (51°F) | 0" |