October is one of the warmer months of the year in Caerphilly, with average highs near 14.2°C and lows around 8.6°C (mean 11.4°C). It is a relatively wet time of year, averaging 103 mm of rainfall and 88% relative humidity across the period.
October is one of the warmer months of the year in Caerphilly. Across 45 years of records, the warmest October in Caerphilly was 2022 — when the month averaged 13.5°C — while the coldest was 1992 at 8.1°C. Typical October days reach 14.2°C with nights near 8.6°C. The long-term trend is warming, about 0.4°C per decade.
October is a relatively wet time of year in Caerphilly, averaging 103 mm of rainfall. The wettest October on record was 2000 with 177 mm, while the driest was 2016 at 40 mm.
Relative humidity in Caerphilly during October averages 88%. The most humid October was 2001 at 91%, and the least humid was 2003 at 84%.
October receives about 1.8 kWh/m²/day of solar energy in Caerphilly. The sunniest Octobers were 1994, 2018 and 2022 at 2.1 kWh/m²/day, and the cloudiest was 2000 at 1.5.
Average wind speed in Caerphilly during October is 4 m/s. The windiest October was 1998 at 5.3 m/s, while the calmest was 2007 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.9°C | 10.9°C | 11.6°C | 11.6°C | 12.3°C | +1.4°C |
| Avg High | 13.7°C | 13.8°C | 14.4°C | 14.4°C | 15.0°C | +1.3°C |
| Avg Low | 8.2°C | 8.0°C | 8.9°C | 8.7°C | 9.5°C | +1.3°C |
| Avg Rain | 110 mm | 89 mm | 111 mm | 90 mm | 127 mm | +17 mm |
October temperatures in Caerphilly have risen by about 2°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -0.7°C (1993) to a record high of 23.2°C (2011).
Rainfall in October is a relatively wet time of year, averaging 103 mm, with a wettest year of 177 mm.
A good time to visit Caerphilly
October is a good time to visit Caerphilly, with days averaging 14.2°C and nights around 8.6°C (mean 11.4°C, warmer than Caerphilly's yearly average) and higher 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 | 14.6°C | 11.9°C | 9.2°C | 18.2°C | 5.6°C | 81 mm | 89% | 4 m/s | 1.6 |
| 2024 | 14.9°C | 11.9°C | 8.9°C | 17.7°C | 4.4°C | 122 mm | 90% | 3.2 m/s | 1.8 |
| 2023 | 15.5°C | 13.0°C | 10.4°C | 20.5°C | 5.1°C | 126 mm | 90% | 3.5 m/s | 1.9 |
| 2022 🔥 | 16.6°C | 13.5°C | 10.5°C | 18.6°C | 7.0°C | 100 mm | 88% | 4 m/s | 2.1 |
| 2021 | 15.3°C | 12.6°C | 9.8°C | 18.8°C | 6.8°C | 161 mm | 90% | 3.9 m/s | 1.9 |
| 2020 | 13.2°C | 10.8°C | 8.4°C | 16.3°C | 5.6°C | 174 mm | 90% | 4.6 m/s | 1.6 |
| 2019 | 13.7°C | 10.9°C | 8.2°C | 16.7°C | 3.4°C | 156 mm | 89% | 4 m/s | 1.7 |
| 2018 | 14.3°C | 11.0°C | 7.7°C | 20.8°C | 1.0°C | 65 mm | 89% | 3.8 m/s | 2.1 |
| 2017 | 15.2°C | 12.5°C | 9.8°C | 18.9°C | 3.3°C | 57 mm | 89% | 4.3 m/s | 1.8 |
| 2016 | 14.0°C | 10.8°C | 7.6°C | 17.3°C | 5.0°C | 40 mm | 89% | 3.3 m/s | 2 |
| 2015 | 14.5°C | 11.2°C | 8.0°C | 18.4°C | 4.5°C | 48 mm | 89% | 3.3 m/s | 1.9 |
| 2014 | 15.2°C | 12.8°C | 10.3°C | 19.0°C | 7.9°C | 102 mm | 89% | 4.4 m/s | 1.7 |
| 2013 | 15.4°C | 12.7°C | 10.1°C | 18.5°C | 6.1°C | 146 mm | 90% | 4.5 m/s | 1.7 |
| 2012 | 12.6°C | 10.0°C | 7.5°C | 16.5°C | 1.0°C | 125 mm | 90% | 3.9 m/s | 1.8 |
| 2011 | 15.5°C | 12.9°C | 10.3°C | 23.2°C | 5.2°C | 71 mm | 88% | 4.4 m/s | 1.9 |
| 2010 | 13.8°C | 10.7°C | 7.6°C | 18.9°C | 0.4°C | 87 mm | 89% | 3.8 m/s | 2 |
| 2009 | 15.0°C | 12.1°C | 9.2°C | 19.7°C | 4.1°C | 63 mm | 88% | 3.4 m/s | 1.8 |
| 2008 | 13.1°C | 10.2°C | 7.3°C | 19.3°C | 0.5°C | 101 mm | 89% | 4.4 m/s | 2 |
| 2007 | 14.5°C | 11.6°C | 8.8°C | 18.1°C | 4.1°C | 62 mm | 89% | 2.7 m/s | 1.8 |
| 2006 | 15.9°C | 13.1°C | 10.4°C | 19.1°C | 6.1°C | 120 mm | 89% | 4.2 m/s | 1.7 |
| 2005 | 16.0°C | 13.3°C | 10.6°C | 19.2°C | 7.5°C | 121 mm | 89% | 4.1 m/s | 1.6 |
| 2004 | 13.6°C | 11.0°C | 8.4°C | 16.1°C | 5.9°C | 128 mm | 88% | 4.8 m/s | 1.7 |
| 2003 | 13.0°C | 9.9°C | 6.8°C | 18.0°C | 1.3°C | 61 mm | 84% | 4.2 m/s | 2 |
| 2002 | 13.8°C | 10.9°C | 8.1°C | 18.2°C | 3.4°C | 145 mm | 87% | 4 m/s | 1.8 |
| 2001 | 15.8°C | 13.4°C | 11.0°C | 20.8°C | 6.6°C | 133 mm | 91% | 4.4 m/s | 1.7 |
| 2000 🌧️ | 13.1°C | 10.9°C | 8.6°C | 17.5°C | 5.6°C | 177 mm | 89% | 4.8 m/s | 1.5 |
| 1999 | 14.0°C | 11.1°C | 8.3°C | 17.4°C | 4.0°C | 78 mm | 88% | 4.1 m/s | 2 |
| 1998 | 14.0°C | 11.1°C | 8.3°C | 18.0°C | 4.9°C | 168 mm | 87% | 5.3 m/s | 1.6 |
| 1997 | 14.6°C | 11.2°C | 7.9°C | 20.2°C | 0.4°C | 65 mm | 88% | 3.8 m/s | 2 |
| 1996 | 14.6°C | 12.1°C | 9.5°C | 18.4°C | 6.4°C | 107 mm | 88% | 4.6 m/s | 1.8 |
| 1995 | 16.4°C | 13.4°C | 10.5°C | 21.2°C | 6.8°C | 63 mm | 88% | 3.9 m/s | 1.9 |
| 1994 | 13.9°C | 10.6°C | 7.4°C | 17.9°C | 2.8°C | 97 mm | 88% | 3.7 m/s | 2.1 |
| 1993 | 11.5°C | 8.5°C | 5.6°C | 15.4°C | -0.7°C | 81 mm | 88% | 3.6 m/s | 1.9 |
| 1992 ❄️ | 10.7°C | 8.1°C | 5.5°C | 15.5°C | 1.6°C | 58 mm | 87% | 4.1 m/s | 1.8 |
| 1991 | 13.3°C | 10.6°C | 7.8°C | 20.4°C | 3.6°C | 87 mm | 87% | 3.8 m/s | 1.8 |
| 1990 | 15.0°C | 12.1°C | 9.2°C | 20.6°C | 5.2°C | 89 mm | 87% | 4.6 m/s | 1.7 |
| 1989 | 15.2°C | 12.4°C | 9.5°C | 17.9°C | 7.1°C | 106 mm | 86% | 4.4 m/s | 1.6 |
| 1988 | 13.7°C | 11.0°C | 8.2°C | 17.2°C | 1.2°C | 101 mm | 90% | 4 m/s | 1.8 |
| 1987 | 13.2°C | 10.4°C | 7.6°C | 19.2°C | 1.6°C | 174 mm | 87% | 4 m/s | 1.7 |
| 1986 | 14.6°C | 11.4°C | 8.3°C | 19.8°C | 4.2°C | 95 mm | 88% | 3.8 m/s | 1.8 |
| 1985 | 13.8°C | 11.0°C | 8.2°C | 21.8°C | 3.5°C | 53 mm | 90% | 3.4 m/s | 1.8 |
| 1984 | 14.5°C | 11.7°C | 8.8°C | 18.7°C | 2.7°C | 93 mm | 87% | 4.3 m/s | 1.8 |
| 1983 | 13.5°C | 10.8°C | 8.1°C | 18.9°C | 0.3°C | 92 mm | 87% | 4.7 m/s | — |
| 1982 | 13.3°C | 10.6°C | 8.0°C | 15.5°C | 4.5°C | 125 mm | 90% | 3.7 m/s | — |
| 1981 | 11.4°C | 9.0°C | 6.7°C | 16.9°C | 2.3°C | 151 mm | 87% | 4.3 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 14.2°C with lows near 8.6°C (mean 11.4°C), based on 45 years of NASA POWER data.
October averages 103 mm of rainfall in Caerphilly, a relatively wet time of year. The wettest on record was 177 mm in 2000.
The hottest October reached 23.2°C in 2011. The coldest dipped to -0.7°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 2°C. Daytime highs moved from 13.3°C to 15.4°C and overnight lows from 8°C to 9.8°C over the same span.
October is one of the warmer months of the year in Caerphilly and a relatively wet time of year, so plan for around 14.2°C daytime highs and 8.6°C at night.
Not quite — October is the 7th coolest month in Caerphilly, averaging 11.4°C.
For October in Caerphilly, pack light layers you can adjust through the day, with typical highs of 14.2°C and lows of 8.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 88% — quite humid.
Average wind speed in October is 4 m/s. The windiest October on record averaged 5.3 m/s (1998).
The wettest October on record was 2000 with 177 mm. On average, October sees 103 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 Caerphilly 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.
