December is one of the cooler months of the year in Fairburn, with average highs near 12.8°C and lows around 1.6°C (mean 7.2°C). It is about average for rainfall, averaging 113 mm of rainfall and 82% relative humidity across the period.
December is one of the cooler months of the year in Fairburn. Across 45 years of records, the warmest December in Fairburn was 2015 — when the month averaged 12.9°C — while the coldest was 1989 at 1.8°C. Typical December days reach 12.8°C with nights near 1.6°C. The long-term trend is warming, about 0.7°C per decade.
December is about average for rainfall in Fairburn, averaging 113 mm of rainfall. The wettest December on record was 2015 with 323 mm, while the driest was 2010 at 34 mm.
Relative humidity in Fairburn during December averages 82%. The most humid Decembers were 1992 and 2015 at 89%, and the least humid was 2001 at 75%.
December receives about 2.4 kWh/m²/day of solar energy in Fairburn. The sunniest December was 2006 at 2.8 kWh/m²/day, and the cloudiest was 1992 at 1.9.
Average wind speed in Fairburn during December is 1.4 m/s. The windiest December was 1983 at 1.7 m/s, while the calmest were 1988, 2014 and 2021, among others at 1.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.9°C | 7.2°C | 6.6°C | 8.3°C | 8.4°C | +2.5°C |
| Avg High | 11.3°C | 12.5°C | 12.4°C | 13.7°C | 14.4°C | +3.1°C |
| Avg Low | 0.4°C | 1.8°C | 0.8°C | 2.9°C | 2.3°C | +1.9°C |
| Avg Rain | 116 mm | 91 mm | 107 mm | 153 mm | 86 mm | -30 mm |
December temperatures in Fairburn have risen by about 2.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -16.2°C (1983) to a record high of 25.5°C (2007).
Rainfall in December is about average for rainfall, averaging 113 mm, with a wettest year of 323 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 0.6°C per decade, widening the gap between day and night.
A quieter season to visit Fairburn
If your dates are flexible, the more temperate months of May and September tend to be the most comfortable for visiting Fairburn. That said, December — with days averaging 12.8°C and nights around 1.6°C (mean 7.2°C) and higher rainfall (113 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 | 14.4°C | 8.0°C | 1.5°C | 24.7°C | -7.4°C | 40 mm | 75% | 1.3 m/s | — |
| 2024 | 13.6°C | 7.6°C | 1.6°C | 22.6°C | -6.4°C | 100 mm | 78% | 1.4 m/s | 2.6 |
| 2023 | 14.6°C | 8.3°C | 2.1°C | 22.1°C | -4.9°C | 89 mm | 77% | 1.3 m/s | 2.5 |
| 2022 | 12.8°C | 7.6°C | 2.4°C | 24.1°C | -12.1°C | 99 mm | 84% | 1.3 m/s | 2.2 |
| 2021 | 18.0°C | 12.1°C | 6.1°C | 24.3°C | -2.3°C | 115 mm | 85% | 1.2 m/s | 2.1 |
| 2020 | 12.8°C | 6.6°C | 0.3°C | 19.6°C | -5.9°C | 73 mm | 83% | 1.4 m/s | 2.7 |
| 2019 | 14.0°C | 8.7°C | 3.4°C | 21.1°C | -4.9°C | 158 mm | 84% | 1.5 m/s | 2.3 |
| 2018 | 11.9°C | 7.5°C | 3.0°C | 21.8°C | -4.8°C | 252 mm | 89% | 1.3 m/s | 2.1 |
| 2017 | 12.6°C | 7.2°C | 1.8°C | 22.6°C | -6.1°C | 76 mm | 80% | 1.3 m/s | 2.2 |
| 2016 | 14.1°C | 8.3°C | 2.5°C | 22.5°C | -5.6°C | 92 mm | 80% | 1.4 m/s | 2.3 |
| 2015 🔥 🌧️ | 18.0°C | 12.9°C | 7.8°C | 24.4°C | -4.0°C | 323 mm | 89% | 1.3 m/s | 2.2 |
| 2014 | 14.6°C | 9.1°C | 3.6°C | 21.5°C | -3.9°C | 117 mm | 85% | 1.2 m/s | 2.3 |
| 2013 | 13.3°C | 8.0°C | 2.7°C | 24.6°C | -5.0°C | 211 mm | 84% | 1.4 m/s | 2.1 |
| 2012 | 15.4°C | 9.6°C | 3.9°C | 23.0°C | -4.2°C | 155 mm | 80% | 1.4 m/s | 2.2 |
| 2011 | 15.2°C | 9.3°C | 3.4°C | 22.3°C | -3.4°C | 112 mm | 82% | 1.3 m/s | 2.5 |
| 2010 | 8.1°C | 2.4°C | -3.2°C | 16.0°C | -8.4°C | 34 mm | 76% | 1.6 m/s | 2.5 |
| 2009 | 9.9°C | 5.0°C | 0.2°C | 19.5°C | -4.1°C | 235 mm | 89% | 1.5 m/s | 2 |
| 2008 | 13.9°C | 8.3°C | 2.8°C | 21.6°C | -8.5°C | 117 mm | 84% | 1.5 m/s | 2.1 |
| 2007 | 15.8°C | 9.9°C | 3.9°C | 25.5°C | -4.9°C | 118 mm | 78% | 1.3 m/s | 2.3 |
| 2006 | 15.5°C | 9.1°C | 2.8°C | 21.8°C | -7.3°C | 80 mm | 80% | 1.4 m/s | 2.8 |
| 2005 | 11.3°C | 5.3°C | -0.7°C | 21.3°C | -5.3°C | 89 mm | 80% | 1.5 m/s | 2.6 |
| 2004 | 11.9°C | 5.9°C | 0.0°C | 21.6°C | -7.2°C | 84 mm | 82% | 1.4 m/s | 2.7 |
| 2003 | 11.4°C | 4.9°C | -1.6°C | 17.4°C | -5.4°C | 71 mm | 79% | 1.5 m/s | 2.7 |
| 2002 | 11.0°C | 5.7°C | 0.4°C | 16.9°C | -5.0°C | 146 mm | 86% | 1.5 m/s | 2.3 |
| 2001 | 16.2°C | 9.8°C | 3.4°C | 24.5°C | -6.3°C | 55 mm | 75% | 1.4 m/s | 2.6 |
| 2000 | 7.0°C | 2.1°C | -2.8°C | 18.2°C | -8.4°C | 76 mm | 81% | 1.4 m/s | 2.3 |
| 1999 | 13.8°C | 7.3°C | 0.8°C | 21.4°C | -6.2°C | 64 mm | 77% | 1.3 m/s | 2.7 |
| 1998 | 15.6°C | 10.1°C | 4.5°C | 25.4°C | -3.0°C | 65 mm | 79% | 1.3 m/s | 2.1 |
| 1997 | 11.0°C | 6.0°C | 0.9°C | 19.5°C | -5.6°C | 145 mm | 87% | 1.4 m/s | 2.4 |
| 1996 | 12.7°C | 7.1°C | 1.5°C | 22.6°C | -8.0°C | 79 mm | 84% | 1.4 m/s | 2.4 |
| 1995 | 10.6°C | 5.4°C | 0.1°C | 20.0°C | -8.7°C | 94 mm | 83% | 1.4 m/s | 2.5 |
| 1994 | 12.7°C | 7.6°C | 2.6°C | 19.8°C | -4.3°C | 58 mm | 87% | 1.3 m/s | 2.2 |
| 1993 | 10.4°C | 5.4°C | 0.4°C | 19.9°C | -5.8°C | 79 mm | 84% | 1.4 m/s | 2.4 |
| 1992 | 10.3°C | 5.8°C | 1.3°C | 20.3°C | -3.9°C | 134 mm | 89% | 1.4 m/s | 1.9 |
| 1991 | 13.9°C | 7.9°C | 2.0°C | 24.4°C | -5.6°C | 97 mm | 80% | 1.4 m/s | 2.5 |
| 1990 | 14.3°C | 8.9°C | 3.4°C | 22.5°C | -6.6°C | 94 mm | 83% | 1.5 m/s | 2.1 |
| 1989 ❄️ | 7.0°C | 1.8°C | -3.3°C | 17.2°C | -15.3°C | 149 mm | 84% | 1.4 m/s | 2.4 |
| 1988 | 12.2°C | 6.0°C | -0.3°C | 20.5°C | -5.8°C | 42 mm | 82% | 1.2 m/s | 2.6 |
| 1987 | 14.2°C | 8.3°C | 2.5°C | 23.2°C | -5.2°C | 91 mm | 78% | 1.5 m/s | 2.3 |
| 1986 | 10.6°C | 5.8°C | 1.0°C | 18.8°C | -4.9°C | 80 mm | 88% | 1.2 m/s | 2 |
| 1985 | 9.8°C | 4.0°C | -1.8°C | 19.8°C | -8.8°C | 59 mm | 79% | 1.3 m/s | 2.6 |
| 1984 | 16.5°C | 10.6°C | 4.7°C | 23.0°C | -7.5°C | 74 mm | 84% | 1.2 m/s | 2.4 |
| 1983 | 9.2°C | 3.8°C | -1.6°C | 20.1°C | -16.2°C | 216 mm | 83% | 1.7 m/s | — |
| 1982 | 14.0°C | 9.1°C | 4.3°C | 23.3°C | -5.6°C | 155 mm | 89% | 1.4 m/s | — |
| 1981 | 8.5°C | 3.5°C | -1.6°C | 19.0°C | -8.8°C | 179 mm | 79% | 1.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 12.8°C with lows near 1.6°C (mean 7.2°C), based on 45 years of NASA POWER data.
December averages 113 mm of rainfall in Fairburn, about average for rainfall. The wettest on record was 323 mm in 2015.
The hottest December reached 25.5°C in 2007. The coldest dipped to -16.2°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.5°C. Daytime highs moved from 11.6°C to 14.7°C and overnight lows from 0.8°C to 2.7°C over the same span.
December is one of the cooler months of the year in Fairburn and about average for rainfall, so plan for around 12.8°C daytime highs and 1.6°C at night.
Not quite — December is the 2nd coolest month in Fairburn, averaging 7.2°C.
For December in Fairburn, pack warm layers and a jacket for chilly mornings, with typical highs of 12.8°C and lows of 1.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 82% — quite humid.
Average wind speed in December is 1.4 m/s. The windiest December on record averaged 1.7 m/s (1983).
The wettest December on record was 2015 with 323 mm. On average, December sees 113 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 Fairburn 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.
