December is one of the cooler months of the year in Beaumont, with average highs near 17.3°C and lows around 7.5°C (mean 12.4°C). It is about average for rainfall, averaging 120 mm of rainfall and 84% relative humidity across the period.
December is one of the cooler months of the year in Beaumont. Across 45 years of records, the warmest December in Beaumont was 2021 — when the month averaged 18.6°C — while the coldest was 1989 at 7.8°C. Typical December days reach 17.3°C with nights near 7.5°C. The long-term trend is warming, about 0.5°C per decade.
December is about average for rainfall in Beaumont, averaging 120 mm of rainfall. The wettest December on record was 2016 with 285 mm, while the driest was 2013 at 30 mm.
Relative humidity in Beaumont during December averages 84%. The most humid December was 1984 at 91%, and the least humid was 1989 at 73%.
December receives about 2.5 kWh/m²/day of solar energy in Beaumont. The sunniest December was 2023 at 3.1 kWh/m²/day, and the cloudiest was 1992 at 1.9.
Average wind speed in Beaumont during December is 1.7 m/s. The windiest Decembers were 1983 and 2008 at 2 m/s, while the calmest were 2019, 2023 and 2025, among others at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.4°C | 12.6°C | 11.4°C | 12.9°C | 14.4°C | +3°C |
| Avg High | 16.2°C | 17.3°C | 16.4°C | 17.9°C | 19.4°C | +3.2°C |
| Avg Low | 6.7°C | 7.8°C | 6.4°C | 7.9°C | 9.3°C | +2.6°C |
| Avg Rain | 120 mm | 131 mm | 105 mm | 127 mm | 119 mm | -1 mm |
December temperatures in Beaumont have risen by about 3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -8.4°C (1989) to a record high of 27.4°C (2012).
Rainfall in December is about average for rainfall, averaging 120 mm, with a wettest year of 285 mm.
A quieter season to visit Beaumont
If your dates are flexible, the more temperate months of October and April tend to be the most comfortable for visiting Beaumont. That said, December — with days averaging 17.3°C and nights around 7.5°C (mean 12.4°C) and higher rainfall (120 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 | 19.3°C | 14.1°C | 8.9°C | 26.3°C | -1.6°C | 82 mm | 84% | 1.5 m/s | — |
| 2024 | 20.0°C | 14.8°C | 9.6°C | 25.4°C | 1.6°C | 160 mm | 85% | 1.7 m/s | 2.6 |
| 2023 | 18.5°C | 13.1°C | 7.6°C | 25.5°C | -0.5°C | 93 mm | 82% | 1.5 m/s | 3.1 |
| 2022 | 18.3°C | 13.4°C | 8.5°C | 26.1°C | -7.8°C | 162 mm | 85% | 1.6 m/s | 2.5 |
| 2021 🔥 | 23.1°C | 18.6°C | 14.0°C | 26.8°C | 3.5°C | 53 mm | 88% | 1.7 m/s | 2.4 |
| 2020 | 17.4°C | 12.2°C | 7.0°C | 22.8°C | -1.1°C | 163 mm | 86% | 1.8 m/s | 2.7 |
| 2019 | 18.8°C | 13.0°C | 7.2°C | 25.4°C | -0.7°C | 47 mm | 82% | 1.5 m/s | 3 |
| 2018 | 16.9°C | 12.4°C | 7.9°C | 23.7°C | 1.4°C | 207 mm | 87% | 1.8 m/s | 2.5 |
| 2017 | 16.3°C | 11.5°C | 6.6°C | 25.2°C | -0.4°C | 145 mm | 84% | 1.6 m/s | 2.2 |
| 2016 🌧️ | 18.8°C | 14.3°C | 9.8°C | 26.2°C | -1.1°C | 285 mm | 86% | 1.8 m/s | 2.1 |
| 2015 | 19.3°C | 14.8°C | 10.3°C | 26.1°C | 3.3°C | 123 mm | 88% | 1.8 m/s | 2.7 |
| 2014 | 18.3°C | 13.4°C | 8.5°C | 24.9°C | 2.4°C | 118 mm | 87% | 1.5 m/s | 2.1 |
| 2013 | 15.2°C | 10.5°C | 5.8°C | 24.4°C | -0.9°C | 30 mm | 85% | 1.6 m/s | 2.3 |
| 2012 | 20.8°C | 14.9°C | 9.0°C | 27.4°C | -1.0°C | 102 mm | 78% | 1.8 m/s | 2.6 |
| 2011 | 16.7°C | 12.1°C | 7.5°C | 24.3°C | -2.1°C | 129 mm | 86% | 1.7 m/s | 2.2 |
| 2010 | 17.8°C | 12.3°C | 6.7°C | 25.2°C | -1.9°C | 79 mm | 74% | 1.9 m/s | 2.7 |
| 2009 | 14.0°C | 9.5°C | 4.9°C | 23.6°C | -3.4°C | 148 mm | 86% | 1.8 m/s | 2.2 |
| 2008 | 17.6°C | 12.5°C | 7.5°C | 23.8°C | -1.5°C | 67 mm | 82% | 2 m/s | 2.2 |
| 2007 | 19.3°C | 13.8°C | 8.2°C | 25.4°C | -0.6°C | 64 mm | 83% | 1.7 m/s | 2.8 |
| 2006 | 16.2°C | 11.6°C | 7.0°C | 22.7°C | -1.8°C | 112 mm | 85% | 1.7 m/s | 2.5 |
| 2005 | 16.8°C | 11.4°C | 5.9°C | 26.5°C | 0.7°C | 81 mm | 78% | 1.7 m/s | 2.9 |
| 2004 | 16.1°C | 11.2°C | 6.3°C | 23.4°C | -2.2°C | 66 mm | 84% | 1.7 m/s | 2.8 |
| 2003 | 16.6°C | 10.9°C | 5.2°C | 21.9°C | -1.5°C | 101 mm | 83% | 1.8 m/s | 3 |
| 2002 | 16.3°C | 11.8°C | 7.3°C | 21.9°C | -0.7°C | 203 mm | 88% | 1.9 m/s | 2.3 |
| 2001 | 17.8°C | 13.1°C | 8.5°C | 24.4°C | 0.4°C | 139 mm | 86% | 1.7 m/s | 2.6 |
| 2000 | 13.4°C | 8.3°C | 3.2°C | 22.9°C | -3.7°C | 69 mm | 84% | 1.9 m/s | 2.4 |
| 1999 | 18.1°C | 12.1°C | 6.2°C | 24.5°C | -0.9°C | 106 mm | 80% | 1.8 m/s | 3 |
| 1998 | 17.2°C | 12.9°C | 8.6°C | 25.6°C | -2.6°C | 125 mm | 88% | 1.8 m/s | 2.4 |
| 1997 | 15.5°C | 10.4°C | 5.3°C | 22.8°C | -2.1°C | 151 mm | 84% | 1.7 m/s | 2.8 |
| 1996 | 18.2°C | 13.4°C | 8.6°C | 25.0°C | -5.3°C | 91 mm | 85% | 1.7 m/s | 2.6 |
| 1995 | 17.1°C | 12.3°C | 7.5°C | 26.6°C | -2.6°C | 176 mm | 84% | 1.7 m/s | 2.5 |
| 1994 | 17.5°C | 13.0°C | 8.5°C | 25.4°C | 0.3°C | 173 mm | 89% | 1.5 m/s | 2.2 |
| 1993 | 16.0°C | 11.4°C | 6.8°C | 24.4°C | -1.4°C | 77 mm | 85% | 1.7 m/s | 2.5 |
| 1992 | 17.8°C | 13.5°C | 9.2°C | 23.1°C | 3.2°C | 138 mm | 89% | 1.6 m/s | 1.9 |
| 1991 | 17.4°C | 13.6°C | 9.7°C | 24.9°C | 1.2°C | 182 mm | 89% | 1.8 m/s | 2 |
| 1990 | 18.3°C | 13.1°C | 7.8°C | 25.1°C | -6.0°C | 92 mm | 81% | 1.8 m/s | 2.3 |
| 1989 ❄️ | 13.2°C | 7.8°C | 2.4°C | 23.8°C | -8.4°C | 46 mm | 73% | 1.7 m/s | 2.8 |
| 1988 | 18.9°C | 13.4°C | 7.8°C | 24.4°C | -0.1°C | 107 mm | 78% | 1.7 m/s | 2.4 |
| 1987 | 17.4°C | 12.8°C | 8.2°C | 24.3°C | -1.8°C | 146 mm | 87% | 1.8 m/s | 2.1 |
| 1986 | 13.9°C | 10.0°C | 6.1°C | 22.3°C | 2.1°C | 169 mm | 89% | 1.6 m/s | 2.1 |
| 1985 | 14.8°C | 9.5°C | 4.2°C | 22.3°C | -5.3°C | 73 mm | 83% | 1.6 m/s | 2.9 |
| 1984 | 20.0°C | 16.2°C | 12.4°C | 24.5°C | -2.9°C | 88 mm | 91% | 1.8 m/s | 2.2 |
| 1983 | 12.9°C | 8.1°C | 3.4°C | 24.9°C | -7.7°C | 118 mm | 82% | 2 m/s | — |
| 1982 | 17.6°C | 13.2°C | 8.9°C | 25.4°C | -2.5°C | 262 mm | 88% | 1.9 m/s | — |
| 1981 | 17.0°C | 11.9°C | 6.7°C | 23.9°C | -2.7°C | 73 mm | 81% | 1.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 17.3°C with lows near 7.5°C (mean 12.4°C), based on 45 years of NASA POWER data.
December averages 120 mm of rainfall in Beaumont, about average for rainfall. The wettest on record was 285 mm in 2016.
The hottest December reached 27.4°C in 2012. The coldest dipped to -8.4°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3°C. Daytime highs moved from 16.5°C to 19.8°C and overnight lows from 7.1°C to 9.7°C over the same span.
December is one of the cooler months of the year in Beaumont and about average for rainfall, so plan for around 17.3°C daytime highs and 7.5°C at night.
Not quite — December is the 2nd coolest month in Beaumont, averaging 12.4°C.
For December in Beaumont, pack warm layers and a jacket for chilly mornings, with typical highs of 17.3°C and lows of 7.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 84% — quite humid.
Average wind speed in December is 1.7 m/s. The windiest December on record averaged 2 m/s (1983).
The wettest December on record was 2016 with 285 mm. On average, December sees 120 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 Beaumont 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.
