December is one of the cooler months of the year in Selby, with average highs near 6.1°C and lows around 1.5°C (mean 3.8°C). It is about average for rainfall, averaging 68 mm of rainfall and 95% relative humidity across the period.
December is one of the cooler months of the year in Selby. Across 45 years of records, the warmest December in Selby was 2015 — when the month averaged 7.2°C — while the coldest was 1981 at -1.3°C. Typical December days reach 6.1°C with nights near 1.5°C. The long-term trend is warming, about 0.4°C per decade.
December is about average for rainfall in Selby, averaging 68 mm of rainfall. The wettest December on record was 2023 with 134 mm, while the driest was 1988 at 24 mm.
Relative humidity in Selby during December averages 95%. The most humid December was 2022 at 97%, and the least humid was 2011 at 92%.
December receives about 0.5 kWh/m²/day of solar energy in Selby. 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 Selby during December is 3.6 m/s. The windiest December was 2015 at 4.8 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 | 3.5°C | 3.2°C | 3.7°C | 4.2°C | 4.8°C | +1.3°C |
| Avg High | 5.8°C | 5.5°C | 5.9°C | 6.5°C | 7.0°C | +1.2°C |
| Avg Low | 1.2°C | 0.9°C | 1.4°C | 1.9°C | 2.7°C | +1.5°C |
| Avg Rain | 61 mm | 66 mm | 63 mm | 65 mm | 96 mm | +35 mm |
December temperatures in Selby have risen by about 2.2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -9.9°C (1981) to a record high of 13.8°C (1994).
Rainfall in December is about average for rainfall, averaging 68 mm, with a wettest year of 134 mm.
A quieter season to visit Selby
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Selby. That said, December — with days averaging 6.1°C and nights around 1.5°C (mean 3.8°C) and moderate rainfall (68 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 | 7.9°C | 5.7°C | 3.6°C | 13.5°C | -2.8°C | 111 mm | 95% | 3.7 m/s | — |
| 2024 | 8.1°C | 6.2°C | 4.3°C | 12.0°C | 0.3°C | 66 mm | 93% | 4.1 m/s | 0.5 |
| 2023 🌧️ | 7.8°C | 5.6°C | 3.5°C | 13.1°C | -3.1°C | 134 mm | 94% | 4.4 m/s | 0.5 |
| 2022 | 5.0°C | 2.7°C | 0.5°C | 10.2°C | -4.7°C | 84 mm | 97% | 3.1 m/s | 0.6 |
| 2021 | 7.0°C | 4.5°C | 2.1°C | 13.3°C | -3.0°C | 78 mm | 95% | 3 m/s | 0.5 |
| 2020 | 6.0°C | 4.1°C | 2.2°C | 11.5°C | -3.5°C | 105 mm | 96% | 3.2 m/s | 0.5 |
| 2019 | 6.8°C | 4.7°C | 2.5°C | 11.5°C | -2.2°C | 68 mm | 96% | 3.7 m/s | 0.6 |
| 2018 | 7.2°C | 5.0°C | 2.8°C | 12.0°C | -2.2°C | 86 mm | 96% | 3.2 m/s | 0.5 |
| 2017 | 5.9°C | 3.5°C | 1.1°C | 11.3°C | -2.6°C | 44 mm | 95% | 3.5 m/s | 0.6 |
| 2016 | 7.4°C | 5.2°C | 3.0°C | 12.3°C | -1.4°C | 31 mm | 96% | 3.2 m/s | 0.6 |
| 2015 🔥 | 9.8°C | 7.2°C | 4.7°C | 13.8°C | -0.9°C | 110 mm | 93% | 4.8 m/s | 0.4 |
| 2014 | 6.4°C | 4.1°C | 1.8°C | 12.3°C | -2.3°C | 42 mm | 94% | 4.1 m/s | 0.6 |
| 2013 | 7.8°C | 5.2°C | 2.5°C | 12.0°C | -1.6°C | 51 mm | 93% | 4.6 m/s | 0.6 |
| 2012 | 5.3°C | 3.1°C | 0.8°C | 10.3°C | -3.6°C | 118 mm | 96% | 3.7 m/s | 0.6 |
| 2011 | 6.9°C | 4.6°C | 2.3°C | 12.4°C | -3.0°C | 65 mm | 92% | 4.7 m/s | 0.6 |
| 2010 | 1.5°C | -0.7°C | -2.9°C | 6.5°C | -7.5°C | 33 mm | 96% | 2.5 m/s | 0.6 |
| 2009 | 4.0°C | 2.1°C | 0.2°C | 9.8°C | -3.8°C | 67 mm | 95% | 2.9 m/s | 0.6 |
| 2008 | 4.8°C | 2.4°C | 0.0°C | 11.0°C | -3.1°C | 56 mm | 96% | 2.8 m/s | 0.6 |
| 2007 | 6.0°C | 3.8°C | 1.5°C | 12.5°C | -4.0°C | 60 mm | 95% | 3.6 m/s | 0.5 |
| 2006 | 7.8°C | 5.5°C | 3.2°C | 12.5°C | -1.1°C | 69 mm | 94% | 3.9 m/s | 0.5 |
| 2005 | 6.1°C | 3.9°C | 1.6°C | 10.0°C | -3.3°C | 46 mm | 96% | 3.1 m/s | 0.6 |
| 2004 | 6.9°C | 4.4°C | 1.9°C | 10.9°C | -2.9°C | 31 mm | 95% | 3.5 m/s | 0.6 |
| 2003 | 6.0°C | 3.6°C | 1.1°C | 11.0°C | -4.1°C | 70 mm | 95% | 3.2 m/s | 0.5 |
| 2002 | 5.7°C | 3.9°C | 2.1°C | 10.5°C | -1.9°C | 111 mm | 95% | 2.9 m/s | 0.4 |
| 2001 | 5.6°C | 2.9°C | 0.3°C | 11.8°C | -3.0°C | 38 mm | 95% | 3.2 m/s | 0.6 |
| 2000 | 5.9°C | 4.2°C | 2.5°C | 12.0°C | -3.6°C | 83 mm | 95% | 3.8 m/s | 0.5 |
| 1999 | 5.4°C | 3.0°C | 0.6°C | 11.4°C | -4.5°C | 69 mm | 94% | 4.5 m/s | 0.6 |
| 1998 | 6.5°C | 4.2°C | 1.9°C | 12.9°C | -3.4°C | 52 mm | 96% | 3.7 m/s | 0.5 |
| 1997 | 6.8°C | 4.8°C | 2.7°C | 11.5°C | -3.3°C | 87 mm | 95% | 3.7 m/s | 0.5 |
| 1996 | 4.1°C | 2.0°C | -0.2°C | 9.0°C | -3.7°C | 69 mm | 94% | 3.1 m/s | 0.5 |
| 1995 | 3.4°C | 1.4°C | -0.6°C | 8.9°C | -7.6°C | 65 mm | 93% | 2.8 m/s | 0.5 |
| 1994 | 7.3°C | 4.7°C | 2.1°C | 13.8°C | -2.6°C | 83 mm | 94% | 4.3 m/s | 0.5 |
| 1993 | 5.8°C | 3.5°C | 1.3°C | 11.9°C | -3.5°C | 71 mm | 94% | 4.4 m/s | 0.5 |
| 1992 | 4.6°C | 2.2°C | -0.2°C | 12.1°C | -6.7°C | 54 mm | 96% | 3 m/s | 0.5 |
| 1991 | 5.6°C | 3.2°C | 0.8°C | 12.0°C | -7.1°C | 28 mm | 94% | 3.2 m/s | 0.6 |
| 1990 | 5.6°C | 3.2°C | 0.9°C | 10.7°C | -2.0°C | 80 mm | 94% | 3.9 m/s | 0.5 |
| 1989 | 5.5°C | 3.4°C | 1.2°C | 10.8°C | -2.2°C | 81 mm | 95% | 2.9 m/s | 0.5 |
| 1988 | 8.2°C | 5.9°C | 3.7°C | 11.5°C | -1.1°C | 24 mm | 94% | 4.1 m/s | 0.5 |
| 1987 | 6.3°C | 4.4°C | 2.6°C | 12.2°C | -2.9°C | 42 mm | 94% | 3.1 m/s | 0.5 |
| 1986 | 6.9°C | 4.3°C | 1.7°C | 12.3°C | -2.9°C | 88 mm | 94% | 4.6 m/s | 0.4 |
| 1985 | 6.6°C | 4.7°C | 2.8°C | 12.5°C | -6.6°C | 67 mm | 94% | 3.7 m/s | 0.4 |
| 1984 | 5.9°C | 3.8°C | 1.6°C | 11.6°C | -4.3°C | 38 mm | 96% | 3.1 m/s | 0.5 |
| 1983 | 6.4°C | 4.0°C | 1.6°C | 12.0°C | -3.2°C | 105 mm | 95% | 4 m/s | — |
| 1982 | 4.8°C | 2.4°C | -0.1°C | 11.2°C | -3.6°C | 52 mm | 95% | 3.7 m/s | — |
| 1981 ❄️ | 1.2°C | -1.3°C | -3.9°C | 9.3°C | -9.9°C | 56 mm | 96% | 2.7 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 6.1°C with lows near 1.5°C (mean 3.8°C), based on 45 years of NASA POWER data.
December averages 68 mm of rainfall in Selby, about average for rainfall. The wettest on record was 134 mm in 2023.
The hottest December reached 13.8°C in 1994. The coldest dipped to -9.9°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°C to 7.2°C and overnight lows from 0.4°C to 2.8°C over the same span.
December is one of the cooler months of the year in Selby and about average for rainfall, so plan for around 6.1°C daytime highs and 1.5°C at night.
Not quite — December is the 3rd coolest month in Selby, averaging 3.8°C.
For December in Selby, pack warm layers and a jacket for chilly mornings, with typical highs of 6.1°C and lows of 1.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 95% — quite humid.
Average wind speed in December is 3.6 m/s. The windiest December on record averaged 4.8 m/s (2015).
The wettest December on record was 2023 with 134 mm. On average, December sees 68 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 Selby 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.
