Weather on June 21 in London
Historical weather data for June 21 in London, United Kingdom
Based on 55 years of data from HAMPSTEAD
About This Date
June 21st in London, United Kingdom typically brings mild summer weather, with average highs around 20°C and lows near 12°C. Over 55 years of records, the warmest June 21st was in 2023 (21°C average), while the coldest was 1980 (12°C) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 35% of June 21st dates historically, with the wettest June 21st recording 1.55" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in London? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip |
|---|---|---|---|
| 2025 | 24°C (75°F) | 12°C (54°F) | 0" |
| 2024 | 26°C (79°F) | -- | 0" |
| 2023 | 26°C (78°F) | 16°C (60°F) | 0.23" |
| 2022 | 26°C (79°F) | 11°C (51°F) | 0" |
| 2021 | -- | 12°C (53°F) | 0.03" |
| 2020 | 22°C (71°F) | 13°C (56°F) | 0" |
| 2019 | -- | 9°C (48°F) | 0" |
| 2018 | -- | 11°C (51°F) | 0" |
| 2017 | 22°C (71°F) | 13°C (56°F) | 0" |
| 2016 | 21°C (69°F) | 13°C (55°F) | 0" |
| 2015 | 17°C (63°F) | 13°C (56°F) | 0.26" |
| 2014 | 24°C (76°F) | 12°C (54°F) | 0" |
| 2013 | 17°C (62°F) | 13°C (56°F) | 0.54" |
| 2012 | 18°C (64°F) | 12°C (54°F) | 0.44" |
| 2011 | 18°C (64°F) | 13°C (56°F) | 0" |
| 2010 | 26°C (79°F) | 11°C (52°F) | 0" |
| 2009 | 21°C (69°F) | 11°C (52°F) | 0" |
| 2008 | 18°C (65°F) | 12°C (54°F) | 0.05" |
| 2007 | 21°C (69°F) | 13°C (56°F) | 0.31" |
| 2006 | 19°C (67°F) | 13°C (55°F) | 0" |
| 2005 | 25°C (77°F) | 14°C (58°F) | 0" |
| 2004 | 19°C (67°F) | 7°C (44°F) | 0.07" |
| 2003 | 26°C (78°F) | 10°C (50°F) | 0.05" |
| 2002 | 19°C (67°F) | 12°C (53°F) | 0.39" |
| 2001 | 21°C (69°F) | 12°C (53°F) | 0" |
| 2000 | 18°C (64°F) | 15°C (59°F) | 0" |
| 1999 | 17°C (63°F) | 9°C (48°F) | 0" |
| 1998 | 21°C (69°F) | 17°C (62°F) | 0" |
| 1997 | 17°C (63°F) | 11°C (51°F) | -- |
| 1996 | 16°C (61°F) | 8°C (47°F) | -- |
| 1995 | 22°C (72°F) | 14°C (58°F) | 0" |
| 1994 | 20°C (68°F) | 13°C (55°F) | 0.02" |
| 1993 | 18°C (64°F) | 9°C (48°F) | 0" |
| 1992 | 20°C (68°F) | 9°C (48°F) | 0" |
| 1991 | 18°C (65°F) | 11°C (51°F) | 0.02" |
| 1990 | 19°C (66°F) | 11°C (52°F) | 1.55" |
| 1989 | 18°C (65°F) | 12°C (53°F) | 0" |
| 1988 | 20°C (68°F) | 14°C (57°F) | 0" |
| 1987 | 16°C (60°F) | 10°C (50°F) | 0.23" |
| 1986 | 19°C (67°F) | 9°C (48°F) | 0" |
| 1985 | 16°C (61°F) | 10°C (50°F) | 0.4" |
| 1984 | 19°C (67°F) | 14°C (58°F) | 0" |
| 1983 | 22°C (72°F) | 9°C (49°F) | 0" |
| 1982 | 17°C (62°F) | 13°C (55°F) | 0.14" |
| 1981 | 23°C (73°F) | 10°C (50°F) | 0" |
| 1980 | 16°C (60°F) | 8°C (46°F) | 0" |
| 1979 | 20°C (68°F) | 13°C (55°F) | 0.14" |
| 1978 | 15°C (59°F) | 11°C (52°F) | 0.26" |
| 1977 | 19°C (67°F) | 7°C (45°F) | 0" |
| 1976 | 27°C (80°F) | 10°C (50°F) | 0" |
| 1975 | 22°C (71°F) | 13°C (56°F) | 0" |
| 1974 | 21°C (69°F) | 9°C (49°F) | 0" |
| 1973 | 22°C (71°F) | 12°C (53°F) | 0" |
| 1972 | 17°C (62°F) | 11°C (51°F) | 0.03" |
| 1971 | 19°C (66°F) | 8°C (47°F) | 0" |