October is one of the warmer months of the year in London, with average highs near 15.2°C and lows around 5.8°C (mean 10.5°C). It is about average for rainfall, averaging 63 mm of rainfall and 77% relative humidity across the period.
October is one of the warmer months of the year in London. Across 45 years of records, the warmest October in London was 2007 — when the month averaged 15.1°C — while the coldest were 1987 and 1988 at 7.2°C. Typical October days reach 15.2°C with nights near 5.8°C. The long-term trend is warming, about 0.7°C per decade.
October is about average for rainfall in London, averaging 63 mm of rainfall. The wettest October on record was 2001 with 138 mm, while the driest was 2024 at 21 mm.
Relative humidity in London during October averages 77%. The most humid October was 1986 at 85%, and the least humid was 2024 at 67%.
October receives about 2.8 kWh/m²/day of solar energy in London. The sunniest Octobers were 1998, 2024 and 2025 at 3.2 kWh/m²/day, and the cloudiest were 2012, 2018 and 2021, among others at 2.4.
Average wind speed in London during October is 3.4 m/s. The windiest October was 1995 at 4.1 m/s, while the calmest was 1984 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.2°C | 10.0°C | 10.5°C | 11.2°C | 12.3°C | +3.1°C |
| Avg High | 13.9°C | 14.9°C | 15.1°C | 15.7°C | 17.2°C | +3.3°C |
| Avg Low | 4.6°C | 5.1°C | 5.9°C | 6.7°C | 7.4°C | +2.8°C |
| Avg Rain | 80 mm | 64 mm | 55 mm | 71 mm | 37 mm | -43 mm |
October temperatures in London have risen by about 3°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -3.8°C (1981) to a record high of 31.3°C (2007).
Rainfall in October is about average for rainfall, averaging 63 mm, with a wettest year of 138 mm.
A good time to visit London
October is a good time to visit London, with days averaging 15.2°C and nights around 5.8°C (mean 10.5°C, warmer than London's yearly average) and moderate rainfall. July and August are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 17.9°C | 12.7°C | 7.4°C | 29.3°C | -0.4°C | 44 mm | 72% | 3.3 m/s | 3.2 |
| 2024 | 18.5°C | 12.8°C | 7.0°C | 25.4°C | 2.3°C | 21 mm | 67% | 3.1 m/s | 3.2 |
| 2023 | 16.6°C | 12.4°C | 8.1°C | 29.6°C | -2.9°C | 44 mm | 75% | 3.4 m/s | 2.5 |
| 2022 | 16.3°C | 11.1°C | 5.9°C | 25.0°C | 0.8°C | 24 mm | 68% | 3.4 m/s | 3.1 |
| 2021 | 19.1°C | 14.8°C | 10.5°C | 26.6°C | 3.8°C | 50 mm | 80% | 3.2 m/s | 2.4 |
| 2020 | 14.7°C | 10.1°C | 5.5°C | 24.0°C | -1.8°C | 39 mm | 74% | 3.6 m/s | 2.6 |
| 2019 | 15.9°C | 11.3°C | 6.7°C | 27.4°C | 1.9°C | 98 mm | 81% | 3.6 m/s | 2.7 |
| 2018 | 14.1°C | 9.6°C | 5.2°C | 26.4°C | -0.4°C | 75 mm | 82% | 3.7 m/s | 2.4 |
| 2017 | 18.0°C | 13.4°C | 8.8°C | 24.9°C | 2.0°C | 55 mm | 78% | 3.6 m/s | 2.7 |
| 2016 | 17.3°C | 12.4°C | 7.5°C | 26.0°C | -1.7°C | 27 mm | 76% | 3.3 m/s | 2.9 |
| 2015 | 15.2°C | 10.6°C | 6.1°C | 21.8°C | -0.3°C | 71 mm | 76% | 3.9 m/s | 2.8 |
| 2014 | 14.9°C | 10.6°C | 6.2°C | 22.1°C | 0.1°C | 71 mm | 81% | 3.5 m/s | 2.5 |
| 2013 | 15.8°C | 11.4°C | 7.0°C | 24.7°C | -3.2°C | 87 mm | 81% | 3.3 m/s | 2.9 |
| 2012 | 14.5°C | 10.3°C | 6.1°C | 22.4°C | 1.3°C | 125 mm | 81% | 3.8 m/s | 2.4 |
| 2011 | 15.6°C | 11.2°C | 6.8°C | 26.8°C | 0.3°C | 68 mm | 77% | 3.3 m/s | 2.5 |
| 2010 | 15.9°C | 11.2°C | 6.4°C | 23.8°C | -1.3°C | 36 mm | 72% | 3.6 m/s | 2.9 |
| 2009 | 13.8°C | 9.3°C | 4.7°C | 19.5°C | -2.7°C | 43 mm | 77% | 3.6 m/s | 2.4 |
| 2008 | 14.8°C | 9.8°C | 4.9°C | 26.0°C | -3.4°C | 31 mm | 73% | 3.5 m/s | 3.1 |
| 2007 🔥 | 20.0°C | 15.1°C | 10.2°C | 31.3°C | 1.5°C | 30 mm | 73% | 3.6 m/s | 2.9 |
| 2006 | 13.6°C | 8.8°C | 4.1°C | 24.5°C | -0.2°C | 49 mm | 79% | 3.8 m/s | 2.4 |
| 2005 | 16.4°C | 11.8°C | 7.2°C | 28.5°C | 0.5°C | 25 mm | 78% | 3.1 m/s | 2.8 |
| 2004 | 16.0°C | 11.4°C | 6.8°C | 24.9°C | 2.2°C | 51 mm | 77% | 3.6 m/s | 2.7 |
| 2003 | 13.5°C | 9.0°C | 4.5°C | 24.3°C | -2.7°C | 68 mm | 80% | 3.2 m/s | 2.8 |
| 2002 | 13.4°C | 8.9°C | 4.3°C | 26.9°C | -2.5°C | 51 mm | 77% | 3.2 m/s | 2.6 |
| 2001 🌧️ | 13.9°C | 9.8°C | 5.8°C | 23.2°C | -0.6°C | 138 mm | 81% | 3.9 m/s | 2.6 |
| 2000 | 15.9°C | 10.9°C | 6.0°C | 22.0°C | -2.3°C | 63 mm | 81% | 2.8 m/s | 2.9 |
| 1999 | 14.4°C | 9.5°C | 4.6°C | 22.0°C | -1.8°C | 56 mm | 75% | 3.4 m/s | 2.9 |
| 1998 | 16.8°C | 11.6°C | 6.5°C | 22.9°C | 0.7°C | 42 mm | 72% | 3.3 m/s | 3.2 |
| 1997 | 15.5°C | 10.6°C | 5.6°C | 26.7°C | -1.1°C | 50 mm | 74% | 3.2 m/s | 3.1 |
| 1996 | 14.4°C | 9.6°C | 4.8°C | 22.1°C | -2.8°C | 69 mm | 81% | 3.6 m/s | 2.6 |
| 1995 | 15.8°C | 11.0°C | 6.2°C | 25.4°C | 1.6°C | 77 mm | 76% | 4.1 m/s | 2.5 |
| 1994 | 16.0°C | 10.9°C | 5.9°C | 22.7°C | 0.7°C | 37 mm | 73% | 3.1 m/s | 3 |
| 1993 | 13.5°C | 8.3°C | 3.0°C | 24.2°C | -2.1°C | 63 mm | 77% | 3.7 m/s | 2.7 |
| 1992 | 13.0°C | 8.1°C | 3.3°C | 21.4°C | -1.8°C | 71 mm | 80% | 3.3 m/s | 2.7 |
| 1991 | 15.3°C | 10.7°C | 6.1°C | 24.9°C | -1.5°C | 77 mm | 74% | 3.5 m/s | 2.7 |
| 1990 | 14.3°C | 9.4°C | 4.6°C | 23.8°C | -3.3°C | 96 mm | 80% | 3.7 m/s | 2.7 |
| 1989 | 15.4°C | 10.3°C | 5.2°C | 23.7°C | 0.4°C | 52 mm | 76% | 3.5 m/s | 2.9 |
| 1988 | 10.8°C | 7.2°C | 3.5°C | 25.7°C | -2.9°C | 118 mm | 79% | 3.7 m/s | 2.5 |
| 1987 ❄️ | 11.7°C | 7.2°C | 2.6°C | 18.6°C | -1.4°C | 100 mm | 78% | 3.2 m/s | 2.8 |
| 1986 | 13.6°C | 9.1°C | 4.6°C | 19.8°C | -2.9°C | 88 mm | 85% | 3 m/s | 2.7 |
| 1985 | 14.5°C | 9.8°C | 5.2°C | 19.7°C | -2.5°C | 119 mm | 78% | 3.3 m/s | 2.7 |
| 1984 | 16.8°C | 11.6°C | 6.4°C | 21.1°C | 0.5°C | 32 mm | 77% | 2.7 m/s | 3 |
| 1983 | 14.6°C | 10.0°C | 5.3°C | 24.1°C | -2.2°C | 70 mm | 77% | 3.6 m/s | — |
| 1982 | 15.6°C | 10.4°C | 5.1°C | 24.2°C | -2.2°C | 45 mm | 78% | 3 m/s | — |
| 1981 | 11.8°C | 7.4°C | 3.1°C | 17.8°C | -3.8°C | 96 mm | 82% | 3.6 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 15.2°C with lows near 5.8°C (mean 10.5°C), based on 45 years of NASA POWER data.
October averages 63 mm of rainfall in London, about average for rainfall. The wettest on record was 138 mm in 2001.
The hottest October reached 31.3°C in 2007. The coldest dipped to -3.8°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 3°C. Daytime highs moved from 14.7°C to 17.7°C and overnight lows from 5°C to 7.8°C over the same span.
October is one of the warmer months of the year in London and about average for rainfall, so plan for around 15.2°C daytime highs and 5.8°C at night.
Not quite — October is the 7th coolest month in London, averaging 10.5°C.
For October in London, pack warm layers and a jacket for chilly mornings, with typical highs of 15.2°C and lows of 5.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 77% — quite humid.
Average wind speed in October is 3.4 m/s. The windiest October on record averaged 4.1 m/s (1995).
The wettest October on record was 2001 with 138 mm. On average, October sees 63 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in London behaves each October, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for October specifically, along with year-by-year records and how the month has changed over the decades.
