Weather on March 21 in London
Historical weather data for March 21 in London, United Kingdom
Based on 55 years of data from HAMPSTEAD
About This Date
March 21st in London, United Kingdom typically brings cool spring weather, with average highs around 12°C and lows near 3°C. Over 55 years of records, the warmest March 21st was in 2002 (13°C average), while the coldest was 2013 (2°C) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 44% of March 21st dates historically, with the wettest March 21st recording 0.84" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in London? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 16°C (61°F) | 7°C (45°F) | 0" |
| 2024 | 17°C (62°F) | -- | 0.03" |
| 2023 | 15°C (59°F) | 9°C (48°F) | 0.25" |
| 2022 | 17°C (63°F) | 1°C (33°F) | 0" |
| 2021 | 11°C (52°F) | 6°C (43°F) | 0" |
| 2020 | -- | 4°C (39°F) | 0" |
| 2019 | -- | 9°C (48°F) | 0" |
| 2018 | -- | -2°C (29°F) | 0" |
| 2017 | -- | 4°C (39°F) | 0.13" |
| 2016 | 14°C (58°F) | 4°C (40°F) | 0" |
| 2015 | 9°C (48°F) | 4°C (39°F) | 0" |
| 2014 | 11°C (51°F) | 6°C (42°F) | 0.56" |
| 2013 | 4°C (40°F) | -1°C (31°F) | 0.2" |
| 2012 | 16°C (61°F) | 7°C (45°F) | 0" |
| 2011 | 16°C (61°F) | 3°C (38°F) | 0" |
| 2010 | 12°C (53°F) | 5°C (41°F) | 0" |
| 2009 | 15°C (59°F) | 1°C (34°F) | 0" |
| 2008 | 9°C (49°F) | 3°C (38°F) | 0.44" |
| 2007 | 8°C (46°F) | -2°C (29°F) | 0.03" |
| 2006 | 4°C (40°F) | 1°C (34°F) | 0" |
| 2005 | 14°C (58°F) | 6°C (42°F) | 0.16" |
| 2004 | 11°C (51°F) | 6°C (42°F) | 0.06" |
| 2003 | 13°C (55°F) | 4°C (39°F) | 0" |
| 2002 | 16°C (60°F) | 10°C (50°F) | 0" |
| 2001 | 13°C (56°F) | 1°C (34°F) | 0.08" |
| 2000 | 15°C (59°F) | 2°C (36°F) | 0" |
| 1999 | 11°C (51°F) | 6°C (42°F) | 0.15" |
| 1998 | 12°C (53°F) | 8°C (46°F) | 0" |
| 1997 | 13°C (55°F) | 3°C (38°F) | -- |
| 1996 | 11°C (52°F) | 2°C (35°F) | -- |
| 1995 | 11°C (52°F) | 0°C (32°F) | 0" |
| 1994 | 12°C (54°F) | 4°C (39°F) | 0.12" |
| 1993 | 12°C (54°F) | 5°C (41°F) | 0.68" |
| 1992 | 13°C (56°F) | 5°C (41°F) | 0.41" |
| 1991 | 9°C (49°F) | 7°C (44°F) | 0" |
| 1990 | 13°C (56°F) | 9°C (48°F) | 0.04" |
| 1989 | 13°C (55°F) | 1°C (33°F) | 0.17" |
| 1988 | 12°C (54°F) | 7°C (45°F) | 0" |
| 1987 | 9°C (49°F) | -1°C (31°F) | 0" |
| 1986 | 11°C (51°F) | 1°C (34°F) | 0.2" |
| 1985 | 9°C (48°F) | -3°C (27°F) | 0.31" |
| 1984 | 11°C (51°F) | 2°C (36°F) | 0" |
| 1983 | 8°C (47°F) | 2°C (35°F) | 0.37" |
| 1982 | 12°C (54°F) | 4°C (40°F) | 0.09" |
| 1981 | 8°C (47°F) | 7°C (45°F) | 0.4" |
| 1980 | 8°C (46°F) | -2°C (29°F) | 0" |
| 1979 | 8°C (46°F) | 2°C (36°F) | 0.4" |
| 1978 | 9°C (49°F) | 1°C (34°F) | 0" |
| 1977 | 6°C (42°F) | 3°C (38°F) | 0.84" |
| 1976 | 4°C (40°F) | 1°C (34°F) | 0" |
| 1975 | 8°C (46°F) | 3°C (38°F) | 0.83" |
| 1974 | 11°C (52°F) | 3°C (38°F) | 0" |
| 1973 | 16°C (61°F) | 2°C (35°F) | 0" |
| 1972 | 18°C (64°F) | 5°C (41°F) | 0" |
| 1971 | 8°C (47°F) | 4°C (39°F) | 0" |