Weather on September 30 in London
Historical weather data for September 30 in London, United Kingdom
Based on 55 years of data from HAMPSTEAD
About This Date
September 30th in London, United Kingdom typically brings mild fall weather, with average highs around 17°C and lows near 10°C. Over 55 years of records, the warmest September 30th was in 2011 (21°C average), while the coldest was 1974 (8°C) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 49% of September 30th dates historically, with the wettest September 30th recording 1.5" of rain. The last decade has been 4.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.3°F cooler on this date compared to 20-30 years ago.
Planning for September 30th in London? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Year by Year History
| Year | High | Low | Precip (mm) |
|---|---|---|---|
| 2025 | 18°C (64°F) | 5°C (41°F) | 0 mm |
| 2024 | 17°C (62°F) | 11°C (51°F) | 18 mm |
| 2023 | 20°C (68°F) | 12°C (53°F) | 0 mm |
| 2022 | 17°C (62°F) | 8°C (46°F) | 0 mm |
| 2021 | 17°C (62°F) | -- | 2 mm |
| 2020 | 14°C (58°F) | 9°C (49°F) | 8 mm |
| 2019 | -- | 9°C (49°F) | 11 mm |
| 2018 | 16°C (60°F) | -- | 0 mm |
| 2017 | -- | 11°C (52°F) | 2 mm |
| 2016 | 14°C (58°F) | 8°C (46°F) | 1 mm |
| 2015 | 18°C (64°F) | 9°C (49°F) | 0 mm |
| 2014 | 19°C (67°F) | 13°C (56°F) | 1 mm |
| 2013 | 17°C (62°F) | 12°C (54°F) | 0 mm |
| 2012 | 16°C (60°F) | 6°C (42°F) | 11 mm |
| 2011 | 28°C (83°F) | 14°C (57°F) | 0 mm |
| 2010 | 16°C (60°F) | 8°C (46°F) | 1 mm |
| 2009 | 17°C (62°F) | 12°C (54°F) | 0 mm |
| 2008 | 14°C (57°F) | 11°C (51°F) | 8 mm |
| 2007 | 16°C (61°F) | 6°C (43°F) | 5 mm |
| 2006 | 19°C (66°F) | 12°C (53°F) | 20 mm |
| 2005 | 18°C (65°F) | 11°C (51°F) | 2 mm |
| 2004 | 16°C (61°F) | 13°C (55°F) | 9 mm |
| 2003 | 17°C (63°F) | 10°C (50°F) | 0 mm |
| 2002 | 21°C (69°F) | 9°C (49°F) | 0 mm |
| 2001 | 18°C (64°F) | 12°C (54°F) | 14 mm |
| 2000 | 18°C (65°F) | 13°C (55°F) | 1 mm |
| 1999 | 15°C (59°F) | 12°C (54°F) | 1 mm |
| 1998 | 17°C (63°F) | 12°C (54°F) | 38 mm |
| 1997 | 25°C (77°F) | 16°C (60°F) | 0 mm |
| 1996 | 16°C (61°F) | 12°C (53°F) | -- |
| 1995 | 19°C (67°F) | 9°C (48°F) | 6 mm |
| 1994 | 14°C (58°F) | 12°C (53°F) | 0 mm |
| 1993 | 12°C (53°F) | 7°C (45°F) | 33 mm |
| 1992 | 16°C (60°F) | 14°C (57°F) | 4 mm |
| 1991 | 16°C (60°F) | 6°C (43°F) | 0 mm |
| 1990 | 17°C (62°F) | 13°C (56°F) | 35 mm |
| 1989 | 14°C (58°F) | 10°C (50°F) | 0 mm |
| 1988 | 14°C (58°F) | 5°C (41°F) | 0 mm |
| 1987 | 16°C (61°F) | 9°C (48°F) | 0 mm |
| 1986 | 18°C (64°F) | 12°C (54°F) | 0 mm |
| 1985 | 26°C (79°F) | 12°C (54°F) | 0 mm |
| 1984 | 15°C (59°F) | 12°C (53°F) | 0 mm |
| 1983 | 16°C (61°F) | 13°C (55°F) | 0 mm |
| 1982 | 17°C (63°F) | 7°C (45°F) | 0 mm |
| 1981 | 18°C (64°F) | 8°C (47°F) | 29 mm |
| 1980 | 17°C (62°F) | 10°C (50°F) | 0 mm |
| 1979 | 19°C (66°F) | 9°C (48°F) | 0 mm |
| 1978 | 14°C (58°F) | 7°C (44°F) | 1 mm |
| 1977 | 14°C (57°F) | 9°C (49°F) | 3 mm |
| 1976 | 18°C (64°F) | 12°C (54°F) | 10 mm |
| 1975 | 14°C (58°F) | 12°C (54°F) | 5 mm |
| 1974 | 14°C (57°F) | 2°C (36°F) | 0 mm |
| 1973 | 14°C (57°F) | 8°C (46°F) | 0 mm |
| 1972 | 16°C (61°F) | 9°C (48°F) | 0 mm |
| 1971 | 21°C (70°F) | 12°C (54°F) | 0 mm |