Weather on August 18 in London
Historical weather data for August 18 in London, United Kingdom
Based on 55 years of data from HAMPSTEAD
About This Date
August 18th in London, United Kingdom typically brings pleasant summer weather, with average highs around 23°C and lows near 13°C. Over 55 years of records, the warmest August 18th was in 1996 (24°C average), while the coldest was 1977 (13°C) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 47% of August 18th dates historically, with the wettest August 18th recording 1.4" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for August 18th in London? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 23°C (74°F) | -- | 0 mm |
| 2024 | 24°C (76°F) | 13°C (55°F) | 0 mm |
| 2023 | 24°C (76°F) | 18°C (64°F) | 0 mm |
| 2022 | 28°C (82°F) | 18°C (64°F) | 36 mm |
| 2021 | -- | 16°C (60°F) | 1 mm |
| 2020 | 20°C (68°F) | 14°C (58°F) | 0 mm |
| 2019 | 21°C (69°F) | 12°C (53°F) | 3 mm |
| 2018 | 25°C (77°F) | 14°C (58°F) | 0 mm |
| 2017 | 19°C (67°F) | 14°C (57°F) | 3 mm |
| 2016 | -- | 16°C (60°F) | 0 mm |
| 2015 | 20°C (68°F) | 13°C (55°F) | 0 mm |
| 2014 | 18°C (64°F) | 10°C (50°F) | 2 mm |
| 2013 | 23°C (74°F) | 15°C (59°F) | 0 mm |
| 2012 | 29°C (84°F) | 19°C (66°F) | 0 mm |
| 2011 | 21°C (70°F) | 12°C (54°F) | 35 mm |
| 2010 | 21°C (69°F) | 12°C (53°F) | 5 mm |
| 2009 | 28°C (82°F) | 13°C (55°F) | 0 mm |
| 2008 | 20°C (68°F) | 13°C (56°F) | 1 mm |
| 2007 | 19°C (66°F) | 13°C (56°F) | 33 mm |
| 2006 | 20°C (68°F) | 14°C (58°F) | 9 mm |
| 2005 | 28°C (82°F) | 14°C (58°F) | 16 mm |
| 2004 | 22°C (71°F) | 16°C (61°F) | 33 mm |
| 2003 | 22°C (72°F) | 16°C (61°F) | 5 mm |
| 2002 | 25°C (77°F) | 16°C (61°F) | 1 mm |
| 2001 | 21°C (69°F) | 15°C (59°F) | 28 mm |
| 2000 | 22°C (72°F) | 13°C (55°F) | 8 mm |
| 1999 | 17°C (63°F) | 13°C (56°F) | 12 mm |
| 1998 | 24°C (75°F) | 14°C (57°F) | 0 mm |
| 1997 | 29°C (84°F) | 17°C (63°F) | -- |
| 1996 | 31°C (87°F) | 17°C (62°F) | -- |
| 1995 | 30°C (86°F) | 17°C (63°F) | 0 mm |
| 1994 | 22°C (71°F) | 10°C (50°F) | 3 mm |
| 1993 | 24°C (76°F) | 12°C (53°F) | 0 mm |
| 1992 | 21°C (70°F) | 12°C (53°F) | 1 mm |
| 1991 | 24°C (75°F) | 9°C (49°F) | 0 mm |
| 1990 | 20°C (68°F) | 12°C (54°F) | 22 mm |
| 1989 | 26°C (79°F) | 9°C (49°F) | 0 mm |
| 1988 | 21°C (69°F) | 13°C (56°F) | 8 mm |
| 1987 | 24°C (76°F) | 17°C (62°F) | 0 mm |
| 1986 | 18°C (65°F) | 14°C (57°F) | 12 mm |
| 1985 | 20°C (68°F) | 12°C (54°F) | 7 mm |
| 1984 | 28°C (82°F) | 13°C (55°F) | 0 mm |
| 1983 | 28°C (82°F) | 14°C (57°F) | 0 mm |
| 1982 | 18°C (64°F) | 13°C (55°F) | 17 mm |
| 1981 | 21°C (69°F) | 12°C (53°F) | 0 mm |
| 1980 | 19°C (66°F) | 13°C (56°F) | 0 mm |
| 1979 | 18°C (65°F) | 12°C (53°F) | 0 mm |
| 1978 | 24°C (75°F) | 12°C (53°F) | 0 mm |
| 1977 | 13°C (55°F) | 13°C (55°F) | 0 mm |
| 1976 | 25°C (77°F) | 14°C (57°F) | 0 mm |
| 1975 | 22°C (72°F) | 12°C (54°F) | 1 mm |
| 1974 | 19°C (67°F) | 11°C (52°F) | 11 mm |
| 1973 | 23°C (74°F) | 13°C (56°F) | 0 mm |
| 1972 | 21°C (69°F) | 9°C (48°F) | 0 mm |
| 1971 | 26°C (78°F) | 11°C (51°F) | 0 mm |