Weather on December 21 in Seoul
Historical weather data for December 21 in Seoul, South Korea
Avg High4°C (39°F)
Avg Low-3°C (26°F)
Warmest20027°C
Coldest1999-7°C
Based on 51 years of data from SEOUL CITY
About This Date
December 21st in Seoul, South Korea typically brings cold winter weather, with average highs around 4°C and lows near -3°C. Over 51 years of records, the warmest December 21st was in 2002 (7°C average), while the coldest was 1999 (-7°C) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 14% of December 21st dates historically.
Planning for December 21st in Seoul? Bundle up with warm layers and protect extremities from the cold.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 1°C (34°F) | -6°C (22°F) | -- |
| 2020 | -- | -6°C (21°F) | -- |
| 2019 | -- | -5°C (23°F) | -- |
| 2018 | -- | 1°C (33°F) | -- |
| 2017 | -- | -6°C (22°F) | 0.03" |
| 2016 | -- | 4°C (39°F) | -- |
| 2015 | 5°C (41°F) | -- | 0.2" |
| 2014 | -1°C (30°F) | -- | 0" |
| 2013 | 1°C (34°F) | -6°C (21°F) | -- |
| 2012 | 1°C (33°F) | -- | -- |
| 2011 | 5°C (41°F) | -- | 0.05" |
| 2010 | 11°C (51°F) | -- | -- |
| 2009 | 1°C (33°F) | -8°C (17°F) | -- |
| 2008 | 4°C (40°F) | -- | -- |
| 2007 | 7°C (45°F) | -1°C (31°F) | 0.05" |
| 2006 | 8°C (47°F) | 0°C (32°F) | -- |
| 2005 | -2°C (28°F) | -- | 0" |
| 2004 | -- | -7°C (19°F) | 0" |
| 2003 | 3°C (37°F) | -7°C (19°F) | -- |
| 2002 | 12°C (53°F) | 3°C (37°F) | -- |
| 2001 | 1°C (34°F) | -- | 0.15" |
| 2000 | -- | -3°C (27°F) | -- |
| 1999 | -3°C (27°F) | -12°C (11°F) | -- |
| 1998 | 11°C (51°F) | -1°C (30°F) | -- |
| 1997 | 11°C (52°F) | 2°C (35°F) | -- |
| 1996 | 8°C (47°F) | 0°C (32°F) | -- |
| 1995 | 3°C (38°F) | -- | -- |
| 1994 | 3°C (38°F) | -2°C (28°F) | -- |
| 1993 | -1°C (30°F) | -- | 0" |
| 1992 | 9°C (48°F) | -- | 0.41" |
| 1991 | 6°C (43°F) | -1°C (31°F) | -- |
| 1990 | 9°C (48°F) | 1°C (33°F) | -- |
| 1989 | 3°C (37°F) | -- | 0.05" |
| 1988 | 3°C (37°F) | -- | -- |
| 1987 | 6°C (43°F) | -- | -- |
| 1986 | 6°C (42°F) | -- | 0" |
| 1985 | 2°C (36°F) | -6°C (22°F) | -- |
| 1984 | 0°C (32°F) | -- | -- |
| 1983 | 4°C (39°F) | -6°C (22°F) | -- |
| 1982 | 11°C (51°F) | 2°C (36°F) | -- |
| 1981 | 4°C (39°F) | -6°C (21°F) | -- |
| 1980 | 0°C (32°F) | -10°C (14°F) | -- |
| 1979 | 5°C (41°F) | -- | -- |
| 1978 | 1°C (34°F) | -8°C (18°F) | 0" |
| 1977 | 0°C (32°F) | -- | 0" |
| 1976 | 8°C (46°F) | 1°C (34°F) | 0" |
| 1975 | 2°C (36°F) | -- | 0" |
| 1974 | 3°C (37°F) | -7°C (19°F) | 0" |
| 1973 | 5°C (41°F) | -- | -- |
| 1972 | 5°C (41°F) | -2°C (28°F) | 0" |
| 1971 | -2°C (29°F) | -9°C (15°F) | 0" |