October is one of the warmer months of the year in Chesham, with average highs near 15.1°C and lows around 7.3°C (mean 11.2°C). It is a relatively wet time of year, averaging 79 mm of rainfall and 87% relative humidity across the period.
October is one of the warmer months of the year in Chesham. Across 45 years of records, the warmest Octobers in Chesham were 2005 and 2022 — when the month averaged 13.7°C — while the coldest was 1992 at 7.6°C. Typical October days reach 15.1°C with nights near 7.3°C. The long-term trend is warming, about 0.4°C per decade.
October is a relatively wet time of year in Chesham, averaging 79 mm of rainfall. The wettest October on record was 2020 with 172 mm, while the driest was 1985 at 25 mm.
Relative humidity in Chesham during October averages 87%. The most humid October was 2020 at 90%, and the least humid was 2003 at 82%.
October receives about 1.9 kWh/m²/day of solar energy in Chesham. The sunniest Octobers were 2011 and 2022 at 2.2 kWh/m²/day, and the cloudiest was 2000 at 1.5.
Average wind speed in Chesham during October is 3.4 m/s. The windiest October was 1998 at 4.6 m/s, while the calmest was 2007 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.7°C | 10.5°C | 11.4°C | 11.5°C | 12.3°C | +1.6°C |
| Avg High | 14.6°C | 14.4°C | 15.3°C | 15.4°C | 16.1°C | +1.5°C |
| Avg Low | 6.8°C | 6.6°C | 7.5°C | 7.6°C | 8.3°C | +1.5°C |
| Avg Rain | 81 mm | 70 mm | 81 mm | 71 mm | 105 mm | +24 mm |
October temperatures in Chesham have risen by about 2.3°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -3.5°C (2008) to a record high of 27.7°C (2011).
Rainfall in October is a relatively wet time of year, averaging 79 mm, with a wettest year of 172 mm.
A good time to visit Chesham
October is a good time to visit Chesham, with days averaging 15.1°C and nights around 7.3°C (mean 11.2°C, close to Chesham'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 | 15.7°C | 11.9°C | 8.1°C | 21.1°C | 3.5°C | 71 mm | 86% | 3.4 m/s | 1.6 |
| 2024 | 15.8°C | 11.9°C | 7.9°C | 20.7°C | 1.7°C | 79 mm | 90% | 2.8 m/s | 1.8 |
| 2023 | 16.9°C | 13.2°C | 9.4°C | 23.1°C | 2.3°C | 112 mm | 87% | 2.9 m/s | 2 |
| 2022 | 18.2°C | 13.7°C | 9.1°C | 20.9°C | 3.4°C | 82 mm | 85% | 3.3 m/s | 2.2 |
| 2021 | 16.2°C | 12.2°C | 8.1°C | 21.2°C | 3.9°C | 115 mm | 88% | 3.4 m/s | 1.9 |
| 2020 🌧️ | 13.9°C | 10.6°C | 7.2°C | 17.3°C | 4.0°C | 172 mm | 90% | 3.8 m/s | 1.6 |
| 2019 | 14.3°C | 10.6°C | 6.8°C | 19.1°C | 1.5°C | 102 mm | 89% | 3.4 m/s | 1.8 |
| 2018 | 16.0°C | 11.3°C | 6.6°C | 23.1°C | -0.5°C | 49 mm | 85% | 3.2 m/s | 2.1 |
| 2017 | 16.3°C | 12.4°C | 8.5°C | 20.7°C | 1.9°C | 29 mm | 87% | 3.8 m/s | 1.8 |
| 2016 | 15.2°C | 11.1°C | 7.1°C | 18.7°C | 4.9°C | 30 mm | 85% | 2.8 m/s | 2 |
| 2015 | 14.8°C | 10.9°C | 6.9°C | 18.0°C | 1.5°C | 66 mm | 89% | 2.8 m/s | 1.8 |
| 2014 | 16.4°C | 12.7°C | 9.0°C | 21.1°C | 3.7°C | 90 mm | 88% | 3.5 m/s | 1.8 |
| 2013 | 15.9°C | 12.4°C | 8.9°C | 20.8°C | 4.4°C | 113 mm | 89% | 4 m/s | 1.7 |
| 2012 | 13.4°C | 9.9°C | 6.5°C | 18.2°C | 0.6°C | 109 mm | 89% | 3.3 m/s | 1.8 |
| 2011 | 17.2°C | 13.1°C | 9.0°C | 27.7°C | 1.2°C | 32 mm | 83% | 3.8 m/s | 2.2 |
| 2010 | 14.3°C | 10.3°C | 6.4°C | 20.7°C | -1.2°C | 88 mm | 88% | 3.4 m/s | 2 |
| 2009 | 15.8°C | 11.8°C | 7.8°C | 21.4°C | 3.5°C | 51 mm | 85% | 2.8 m/s | 1.8 |
| 2008 | 14.0°C | 9.6°C | 5.2°C | 21.8°C | -3.5°C | 56 mm | 87% | 3.5 m/s | 2.1 |
| 2007 | 15.3°C | 11.2°C | 7.0°C | 19.8°C | 0.7°C | 47 mm | 88% | 2.3 m/s | 1.8 |
| 2006 | 17.2°C | 13.3°C | 9.3°C | 21.0°C | 4.1°C | 87 mm | 89% | 3.6 m/s | 1.8 |
| 2005 🔥 | 17.4°C | 13.7°C | 10.0°C | 21.8°C | 5.5°C | 83 mm | 88% | 3.4 m/s | 1.7 |
| 2004 | 14.3°C | 10.9°C | 7.4°C | 17.9°C | 3.3°C | 95 mm | 88% | 3.9 m/s | 1.7 |
| 2003 | 13.9°C | 9.5°C | 5.1°C | 20.0°C | -0.1°C | 46 mm | 82% | 3.5 m/s | 2.1 |
| 2002 | 14.3°C | 10.6°C | 6.9°C | 21.2°C | 1.8°C | 89 mm | 86% | 3.3 m/s | 1.8 |
| 2001 | 16.8°C | 13.3°C | 9.8°C | 22.5°C | 5.1°C | 100 mm | 90% | 3.9 m/s | 1.7 |
| 2000 | 13.5°C | 10.2°C | 6.8°C | 17.6°C | 4.7°C | 152 mm | 90% | 3.7 m/s | 1.5 |
| 1999 | 14.7°C | 10.6°C | 6.6°C | 19.7°C | 1.6°C | 61 mm | 87% | 3.3 m/s | 2.1 |
| 1998 | 14.1°C | 10.4°C | 6.7°C | 18.4°C | 2.0°C | 117 mm | 87% | 4.6 m/s | 1.6 |
| 1997 | 14.6°C | 10.2°C | 5.9°C | 24.1°C | -2.9°C | 76 mm | 86% | 3 m/s | 2.1 |
| 1996 | 15.6°C | 11.8°C | 8.0°C | 19.3°C | 4.1°C | 59 mm | 85% | 3.6 m/s | 2.1 |
| 1995 | 17.5°C | 13.1°C | 8.8°C | 23.0°C | 3.5°C | 27 mm | 87% | 3.2 m/s | 2 |
| 1994 | 14.5°C | 10.3°C | 6.1°C | 19.6°C | 0.1°C | 87 mm | 87% | 3.1 m/s | 2.1 |
| 1993 | 12.1°C | 8.6°C | 5.0°C | 16.7°C | -2.2°C | 93 mm | 88% | 3.3 m/s | 1.9 |
| 1992 ❄️ | 10.9°C | 7.6°C | 4.2°C | 16.6°C | -1.7°C | 83 mm | 87% | 3.5 m/s | 1.9 |
| 1991 | 13.9°C | 10.1°C | 6.3°C | 21.8°C | 1.4°C | 38 mm | 85% | 3.1 m/s | 1.8 |
| 1990 | 16.2°C | 12.1°C | 8.0°C | 23.3°C | 1.3°C | 63 mm | 84% | 3.9 m/s | 1.8 |
| 1989 | 16.3°C | 12.2°C | 8.2°C | 20.1°C | 5.3°C | 68 mm | 84% | 3.8 m/s | 1.7 |
| 1988 | 14.8°C | 11.0°C | 7.3°C | 19.1°C | -0.7°C | 62 mm | 88% | 3.3 m/s | 1.9 |
| 1987 | 14.1°C | 10.3°C | 6.4°C | 20.4°C | -0.2°C | 148 mm | 88% | 3.3 m/s | 1.9 |
| 1986 | 15.6°C | 11.4°C | 7.1°C | 21.2°C | 2.4°C | 78 mm | 87% | 3.3 m/s | 1.9 |
| 1985 | 15.3°C | 11.3°C | 7.3°C | 25.2°C | 2.9°C | 25 mm | 87% | 2.9 m/s | 2 |
| 1984 | 15.5°C | 11.4°C | 7.4°C | 21.2°C | 0.8°C | 78 mm | 86% | 3.7 m/s | 1.8 |
| 1983 | 14.3°C | 10.4°C | 6.6°C | 22.9°C | -2.6°C | 47 mm | 86% | 3.9 m/s | — |
| 1982 | 13.6°C | 10.1°C | 6.6°C | 17.9°C | 3.0°C | 125 mm | 90% | 3 m/s | — |
| 1981 | 11.6°C | 8.2°C | 4.7°C | 18.1°C | -0.6°C | 95 mm | 87% | 3.8 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 15.1°C with lows near 7.3°C (mean 11.2°C), based on 45 years of NASA POWER data.
October averages 79 mm of rainfall in Chesham, a relatively wet time of year. The wettest on record was 172 mm in 2020.
The hottest October reached 27.7°C in 2011. The coldest dipped to -3.5°C in 2008.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 2.3°C. Daytime highs moved from 14.1°C to 16.6°C and overnight lows from 6.5°C to 8.5°C over the same span.
October is one of the warmer months of the year in Chesham and a relatively wet time of year, so plan for around 15.1°C daytime highs and 7.3°C at night.
Not quite — October is the 7th coolest month in Chesham, averaging 11.2°C.
For October in Chesham, pack warm layers and a jacket for chilly mornings, with typical highs of 15.1°C and lows of 7.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 87% — quite humid.
Average wind speed in October is 3.4 m/s. The windiest October on record averaged 4.6 m/s (1998).
The wettest October on record was 2020 with 172 mm. On average, October sees 79 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 Chesham 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.
