December is one of the cooler months of the year in Barnsley, with average highs near 6.2°C and lows around 1.6°C (mean 3.9°C). It is about average for rainfall, averaging 66 mm of rainfall and 95% relative humidity across the period.
December is one of the cooler months of the year in Barnsley. Across 45 years of records, the warmest December in Barnsley was 2015 — when the month averaged 7.7°C — while the coldest was 1981 at -1.5°C. Typical December days reach 6.2°C with nights near 1.6°C. The long-term trend is warming, about 0.4°C per decade.
December is about average for rainfall in Barnsley, averaging 66 mm of rainfall. The wettest December on record was 2023 with 122 mm, while the driest was 2016 at 24 mm.
Relative humidity in Barnsley during December averages 95%. The most humid December was 2022 at 97%, and the least humid was 2011 at 93%.
December receives about 0.5 kWh/m²/day of solar energy in Barnsley. The sunniest Decembers were 2017, 2019 and 2022, among others at 0.6 kWh/m²/day, and the cloudiest were 1986, 2002 and 2015, among others at 0.4.
Average wind speed in Barnsley during December is 3.7 m/s. The windiest December was 2015 at 5.1 m/s, while the calmest was 2010 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.6°C | 3.3°C | 3.7°C | 4.3°C | 5.0°C | +1.4°C |
| Avg High | 5.9°C | 5.6°C | 6.0°C | 6.7°C | 7.1°C | +1.2°C |
| Avg Low | 1.3°C | 1.0°C | 1.5°C | 2.0°C | 2.8°C | +1.5°C |
| Avg Rain | 60 mm | 64 mm | 61 mm | 62 mm | 90 mm | +31 mm |
December temperatures in Barnsley have risen by about 2.2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -10.5°C (1981) to a record high of 13.8°C (2015).
Rainfall in December is about average for rainfall, averaging 66 mm, with a wettest year of 122 mm.
A quieter season to visit Barnsley
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Barnsley. That said, December — with days averaging 6.2°C and nights around 1.6°C (mean 3.9°C) and moderate rainfall (66 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 8.1°C | 5.9°C | 3.7°C | 13.6°C | -2.4°C | 98 mm | 95% | 3.9 m/s | — |
| 2024 | 8.3°C | 6.2°C | 4.2°C | 12.2°C | 0.7°C | 68 mm | 94% | 4.2 m/s | 0.5 |
| 2023 🌧️ | 7.9°C | 5.7°C | 3.5°C | 13.1°C | -3.1°C | 122 mm | 94% | 4.6 m/s | 0.5 |
| 2022 | 5.2°C | 2.9°C | 0.6°C | 10.6°C | -5.0°C | 77 mm | 97% | 3.2 m/s | 0.6 |
| 2021 | 7.2°C | 4.9°C | 2.7°C | 13.5°C | -2.9°C | 79 mm | 95% | 3.2 m/s | 0.5 |
| 2020 | 6.1°C | 4.1°C | 2.2°C | 11.4°C | -2.9°C | 98 mm | 96% | 3.4 m/s | 0.5 |
| 2019 | 7.0°C | 4.8°C | 2.7°C | 11.7°C | -2.5°C | 68 mm | 96% | 3.8 m/s | 0.6 |
| 2018 | 7.5°C | 5.3°C | 3.1°C | 12.3°C | -2.5°C | 84 mm | 96% | 3.4 m/s | 0.5 |
| 2017 | 6.0°C | 3.7°C | 1.3°C | 11.2°C | -2.6°C | 53 mm | 96% | 3.7 m/s | 0.6 |
| 2016 | 7.5°C | 5.3°C | 3.1°C | 12.6°C | -1.3°C | 24 mm | 96% | 3.2 m/s | 0.6 |
| 2015 🔥 | 10.3°C | 7.7°C | 5.1°C | 13.8°C | 0.3°C | 89 mm | 93% | 5.1 m/s | 0.4 |
| 2014 | 6.6°C | 4.2°C | 1.8°C | 12.3°C | -2.5°C | 47 mm | 94% | 4.2 m/s | 0.6 |
| 2013 | 7.9°C | 5.3°C | 2.6°C | 12.0°C | 0.1°C | 40 mm | 93% | 4.7 m/s | 0.6 |
| 2012 | 5.5°C | 3.2°C | 0.9°C | 10.8°C | -3.9°C | 116 mm | 96% | 3.8 m/s | 0.6 |
| 2011 | 7.1°C | 4.9°C | 2.7°C | 12.5°C | -2.9°C | 65 mm | 93% | 4.8 m/s | 0.6 |
| 2010 | 1.3°C | -1.0°C | -3.3°C | 6.4°C | -8.7°C | 38 mm | 97% | 2.5 m/s | 0.6 |
| 2009 | 4.1°C | 2.2°C | 0.4°C | 10.2°C | -4.1°C | 66 mm | 96% | 3.1 m/s | 0.6 |
| 2008 | 4.8°C | 2.4°C | 0.0°C | 10.7°C | -4.0°C | 50 mm | 97% | 2.9 m/s | 0.6 |
| 2007 | 6.3°C | 3.9°C | 1.6°C | 12.6°C | -3.4°C | 62 mm | 95% | 3.7 m/s | 0.5 |
| 2006 | 8.1°C | 5.8°C | 3.5°C | 12.7°C | 0.4°C | 69 mm | 94% | 4.1 m/s | 0.5 |
| 2005 | 6.2°C | 3.8°C | 1.5°C | 10.3°C | -3.7°C | 43 mm | 96% | 3.2 m/s | 0.6 |
| 2004 | 6.9°C | 4.4°C | 2.0°C | 10.7°C | -3.0°C | 26 mm | 95% | 3.5 m/s | 0.6 |
| 2003 | 6.0°C | 3.6°C | 1.1°C | 11.4°C | -3.8°C | 72 mm | 95% | 3.2 m/s | 0.5 |
| 2002 | 5.8°C | 4.0°C | 2.2°C | 10.9°C | -2.0°C | 106 mm | 95% | 3.1 m/s | 0.4 |
| 2001 | 5.5°C | 2.8°C | 0.1°C | 12.0°C | -3.3°C | 34 mm | 95% | 3.2 m/s | 0.6 |
| 2000 | 6.1°C | 4.4°C | 2.7°C | 12.4°C | -3.0°C | 79 mm | 95% | 4 m/s | 0.5 |
| 1999 | 5.6°C | 3.4°C | 1.1°C | 11.6°C | -4.3°C | 66 mm | 94% | 4.6 m/s | 0.6 |
| 1998 | 6.8°C | 4.4°C | 2.0°C | 13.2°C | -3.4°C | 56 mm | 96% | 3.8 m/s | 0.5 |
| 1997 | 6.8°C | 4.8°C | 2.7°C | 11.7°C | -3.0°C | 75 mm | 95% | 3.9 m/s | 0.5 |
| 1996 | 4.0°C | 1.9°C | -0.3°C | 9.4°C | -4.1°C | 68 mm | 95% | 3.1 m/s | 0.5 |
| 1995 | 3.2°C | 1.1°C | -0.9°C | 9.0°C | -7.2°C | 62 mm | 94% | 2.7 m/s | 0.5 |
| 1994 | 7.5°C | 5.0°C | 2.4°C | 13.5°C | -2.3°C | 83 mm | 95% | 4.4 m/s | 0.5 |
| 1993 | 5.9°C | 3.6°C | 1.2°C | 12.1°C | -4.4°C | 75 mm | 94% | 4.7 m/s | 0.5 |
| 1992 | 4.8°C | 2.3°C | -0.1°C | 12.5°C | -6.4°C | 47 mm | 96% | 3.2 m/s | 0.5 |
| 1991 | 5.6°C | 3.3°C | 1.0°C | 12.2°C | -5.0°C | 27 mm | 94% | 3.3 m/s | 0.6 |
| 1990 | 5.6°C | 3.1°C | 0.6°C | 11.1°C | -2.5°C | 79 mm | 94% | 4 m/s | 0.5 |
| 1989 | 5.5°C | 3.3°C | 1.2°C | 11.0°C | -3.1°C | 94 mm | 96% | 3 m/s | 0.5 |
| 1988 | 8.2°C | 6.0°C | 3.8°C | 11.7°C | -0.6°C | 24 mm | 94% | 4.1 m/s | 0.5 |
| 1987 | 6.3°C | 4.4°C | 2.4°C | 12.3°C | -3.0°C | 34 mm | 95% | 3.3 m/s | 0.5 |
| 1986 | 7.0°C | 4.4°C | 1.9°C | 13.0°C | -2.8°C | 81 mm | 94% | 4.9 m/s | 0.4 |
| 1985 | 7.0°C | 5.1°C | 3.2°C | 12.8°C | -6.1°C | 66 mm | 94% | 3.9 m/s | 0.4 |
| 1984 | 6.0°C | 3.9°C | 1.9°C | 11.2°C | -4.1°C | 43 mm | 96% | 3.3 m/s | 0.5 |
| 1983 | 6.5°C | 4.1°C | 1.6°C | 12.1°C | -3.5°C | 87 mm | 95% | 4.2 m/s | — |
| 1982 | 5.1°C | 2.7°C | 0.2°C | 11.6°C | -3.8°C | 51 mm | 95% | 3.9 m/s | — |
| 1981 ❄️ | 1.2°C | -1.5°C | -4.2°C | 9.5°C | -10.5°C | 59 mm | 97% | 2.7 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 6.2°C with lows near 1.6°C (mean 3.9°C), based on 45 years of NASA POWER data.
December averages 66 mm of rainfall in Barnsley, about average for rainfall. The wettest on record was 122 mm in 2023.
The hottest December reached 13.8°C in 2015. The coldest dipped to -10.5°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.2°C. Daytime highs moved from 5.2°C to 7.3°C and overnight lows from 0.5°C to 2.9°C over the same span.
December is one of the cooler months of the year in Barnsley and about average for rainfall, so plan for around 6.2°C daytime highs and 1.6°C at night.
Not quite — December is the 3rd coolest month in Barnsley, averaging 3.9°C.
For December in Barnsley, pack warm layers and a jacket for chilly mornings, with typical highs of 6.2°C and lows of 1.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 95% — quite humid.
Average wind speed in December is 3.7 m/s. The windiest December on record averaged 5.1 m/s (2015).
The wettest December on record was 2023 with 122 mm. On average, December sees 66 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 Barnsley behaves each December, 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 December specifically, along with year-by-year records and how the month has changed over the decades.
