Weather on April 21 in London
Historical weather data for April 21 in London, United Kingdom
Based on 55 years of data from HAMPSTEAD
About This Date
April 21st in London, United Kingdom typically brings cool spring weather, with average highs around 14°C and lows near 6°C. Over 55 years of records, the warmest April 21st was in 2011 (18°C average), while the coldest was 1973 (5°C) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 35% of April 21st dates historically, with the wettest April 21st recording 0.78" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for April 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) | 8°C (46°F) | 0.1" |
| 2024 | 12°C (54°F) | 5°C (41°F) | 0" |
| 2023 | 12°C (53°F) | -- | 0.15" |
| 2022 | 19°C (67°F) | -- | 0" |
| 2021 | 13°C (56°F) | 3°C (38°F) | 0" |
| 2020 | 19°C (66°F) | 8°C (47°F) | 0" |
| 2019 | 23°C (74°F) | 6°C (42°F) | 0" |
| 2018 | -- | 12°C (53°F) | 0" |
| 2017 | -- | 7°C (45°F) | 0.05" |
| 2016 | 11°C (51°F) | 5°C (41°F) | 0" |
| 2015 | 15°C (59°F) | 4°C (39°F) | 0" |
| 2014 | 15°C (59°F) | 7°C (45°F) | 0.52" |
| 2013 | 14°C (57°F) | 1°C (33°F) | 0" |
| 2012 | 14°C (57°F) | 2°C (36°F) | 0.12" |
| 2011 | 25°C (77°F) | 12°C (53°F) | 0" |
| 2010 | 13°C (56°F) | 3°C (37°F) | 0" |
| 2009 | 20°C (68°F) | 6°C (42°F) | 0" |
| 2008 | 14°C (58°F) | 8°C (46°F) | 0" |
| 2007 | 19°C (66°F) | 6°C (42°F) | 0" |
| 2006 | 17°C (63°F) | 9°C (48°F) | 0" |
| 2005 | 15°C (59°F) | 5°C (41°F) | 0" |
| 2004 | 17°C (63°F) | 8°C (47°F) | 0.16" |
| 2003 | 18°C (64°F) | 8°C (47°F) | 0" |
| 2002 | 20°C (68°F) | 7°C (45°F) | 0" |
| 2001 | 11°C (52°F) | 1°C (33°F) | 0" |
| 2000 | 17°C (62°F) | 8°C (46°F) | 0.15" |
| 1999 | 14°C (58°F) | 8°C (47°F) | 0.14" |
| 1998 | 21°C (70°F) | 6°C (42°F) | 0.13" |
| 1997 | 11°C (52°F) | -1°C (31°F) | -- |
| 1996 | 12°C (53°F) | 11°C (51°F) | -- |
| 1995 | 12°C (54°F) | 1°C (34°F) | 0.21" |
| 1994 | 16°C (61°F) | 6°C (43°F) | 0.33" |
| 1993 | 14°C (57°F) | 9°C (49°F) | 0" |
| 1992 | 14°C (57°F) | 9°C (49°F) | 0" |
| 1991 | 11°C (51°F) | 0°C (32°F) | 0.15" |
| 1990 | 16°C (60°F) | 6°C (43°F) | 0.43" |
| 1989 | 11°C (51°F) | 3°C (38°F) | 0.11" |
| 1988 | 13°C (55°F) | 8°C (46°F) | 0" |
| 1987 | 16°C (60°F) | 4°C (40°F) | 0" |
| 1986 | 9°C (49°F) | 4°C (40°F) | 0.56" |
| 1985 | 14°C (57°F) | 1°C (34°F) | 0" |
| 1984 | 17°C (63°F) | 7°C (45°F) | 0" |
| 1983 | 14°C (57°F) | 4°C (39°F) | 0" |
| 1982 | 17°C (62°F) | 6°C (43°F) | 0" |
| 1981 | 9°C (48°F) | 2°C (36°F) | 0" |
| 1980 | 9°C (48°F) | 2°C (35°F) | 0.11" |
| 1979 | 13°C (55°F) | 5°C (41°F) | 0" |
| 1978 | 12°C (54°F) | 6°C (43°F) | 0.06" |
| 1977 | 16°C (60°F) | 5°C (41°F) | 0.05" |
| 1976 | 12°C (53°F) | 6°C (42°F) | 0" |
| 1975 | 21°C (69°F) | 7°C (45°F) | 0" |
| 1974 | 10°C (50°F) | 4°C (40°F) | 0" |
| 1973 | 8°C (46°F) | 3°C (37°F) | 0.78" |
| 1972 | 10°C (50°F) | 3°C (38°F) | 0" |
| 1971 | 21°C (70°F) | 5°C (41°F) | 0" |