December is one of the cooler months of the year in Augusta, with average highs near 14°C and lows around 3°C (mean 8.5°C). It is about average for rainfall, averaging 98 mm of rainfall and 79% relative humidity across the period.
December is one of the cooler months of the year in Augusta. Across 45 years of records, the warmest December in Augusta was 2015 — when the month averaged 14.6°C — while the coldest was 1989 at 2.7°C. Typical December days reach 14°C with nights near 3°C. The long-term trend is warming, about 0.6°C per decade.
December is about average for rainfall in Augusta, averaging 98 mm of rainfall. The wettest December on record was 1981 with 226 mm, while the driest was 2001 at 30 mm.
Relative humidity in Augusta during December averages 79%. The most humid December was 2015 at 90%, and the least humid was 2001 at 68%.
December receives about 2.5 kWh/m²/day of solar energy in Augusta. The sunniest December was 2004 at 2.9 kWh/m²/day, and the cloudiest was 1992 at 1.9.
Average wind speed in Augusta during December is 1.7 m/s. The windiest Decembers were 1994, 2009 and 2019, among others at 1.9 m/s, while the calmest were 1984 and 2014 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.3°C | 8.2°C | 8.1°C | 9.7°C | 9.5°C | +2.2°C |
| Avg High | 12.8°C | 13.6°C | 13.9°C | 15.0°C | 15.2°C | +2.4°C |
| Avg Low | 1.9°C | 2.9°C | 2.4°C | 4.4°C | 3.9°C | +2°C |
| Avg Rain | 100 mm | 80 mm | 96 mm | 122 mm | 88 mm | -12 mm |
December temperatures in Augusta have risen by about 1.8°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -13.3°C (1983) to a record high of 26.9°C (1991).
Rainfall in December is about average for rainfall, averaging 98 mm, with a wettest year of 226 mm.
A quieter season to visit Augusta
If your dates are flexible, the more temperate months of May and September tend to be the most comfortable for visiting Augusta. That said, December — with days averaging 14°C and nights around 3°C (mean 8.5°C) and higher rainfall (98 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 | 15.0°C | 9.0°C | 3.1°C | 25.4°C | -7.3°C | 65 mm | 73% | 1.5 m/s | — |
| 2024 | 14.4°C | 8.7°C | 3.0°C | 22.4°C | -4.0°C | 68 mm | 77% | 1.7 m/s | 2.6 |
| 2023 | 15.2°C | 9.7°C | 4.2°C | 22.2°C | -3.7°C | 117 mm | 77% | 1.7 m/s | 2.5 |
| 2022 | 13.7°C | 8.5°C | 3.3°C | 24.2°C | -9.7°C | 93 mm | 80% | 1.6 m/s | 2.2 |
| 2021 | 18.9°C | 13.2°C | 7.5°C | 26.2°C | -0.7°C | 106 mm | 80% | 1.6 m/s | 2.3 |
| 2020 | 13.9°C | 7.9°C | 2.0°C | 21.0°C | -5.7°C | 82 mm | 79% | 1.6 m/s | 2.7 |
| 2019 | 15.0°C | 9.8°C | 4.6°C | 24.3°C | -2.9°C | 208 mm | 83% | 1.9 m/s | 2.5 |
| 2018 | 13.4°C | 8.9°C | 4.4°C | 23.9°C | -3.2°C | 158 mm | 88% | 1.7 m/s | 2.2 |
| 2017 | 14.0°C | 8.7°C | 3.4°C | 24.0°C | -5.1°C | 102 mm | 77% | 1.5 m/s | 2.3 |
| 2016 | 15.3°C | 10.0°C | 4.6°C | 24.5°C | -4.6°C | 108 mm | 78% | 1.6 m/s | 2.3 |
| 2015 🔥 | 19.2°C | 14.6°C | 9.9°C | 24.5°C | -2.1°C | 158 mm | 90% | 1.5 m/s | 2.2 |
| 2014 | 15.1°C | 9.8°C | 4.5°C | 21.7°C | -2.2°C | 116 mm | 83% | 1.4 m/s | 2.4 |
| 2013 | 15.3°C | 9.9°C | 4.6°C | 25.2°C | -4.1°C | 157 mm | 80% | 1.6 m/s | 2.2 |
| 2012 | 16.4°C | 10.9°C | 5.3°C | 24.2°C | -2.8°C | 123 mm | 77% | 1.7 m/s | 2.1 |
| 2011 | 17.0°C | 10.8°C | 4.6°C | 23.6°C | -1.3°C | 51 mm | 77% | 1.7 m/s | 2.7 |
| 2010 | 9.5°C | 3.5°C | -2.4°C | 19.9°C | -6.9°C | 40 mm | 70% | 1.8 m/s | 2.7 |
| 2009 | 11.6°C | 6.6°C | 1.6°C | 23.4°C | -3.5°C | 219 mm | 87% | 1.9 m/s | 2.1 |
| 2008 | 15.7°C | 10.1°C | 4.5°C | 23.6°C | -4.6°C | 90 mm | 85% | 1.7 m/s | 2.4 |
| 2007 | 17.6°C | 11.5°C | 5.4°C | 26.6°C | -3.6°C | 171 mm | 74% | 1.6 m/s | 2.4 |
| 2006 | 16.7°C | 10.7°C | 4.8°C | 24.5°C | -6.2°C | 103 mm | 78% | 1.6 m/s | 2.6 |
| 2005 | 12.8°C | 7.0°C | 1.1°C | 23.2°C | -4.2°C | 102 mm | 77% | 1.8 m/s | 2.7 |
| 2004 | 13.3°C | 7.5°C | 1.6°C | 22.9°C | -6.8°C | 39 mm | 75% | 1.8 m/s | 2.9 |
| 2003 | 12.6°C | 6.2°C | -0.2°C | 19.9°C | -4.7°C | 52 mm | 73% | 1.7 m/s | 2.8 |
| 2002 | 12.0°C | 6.7°C | 1.3°C | 19.3°C | -4.1°C | 109 mm | 83% | 1.8 m/s | 2.5 |
| 2001 | 18.1°C | 11.8°C | 5.5°C | 25.8°C | -4.1°C | 30 mm | 68% | 1.7 m/s | 2.7 |
| 2000 | 8.6°C | 3.3°C | -2.1°C | 17.6°C | -6.7°C | 50 mm | 75% | 1.7 m/s | 2.3 |
| 1999 | 15.1°C | 8.7°C | 2.4°C | 22.7°C | -4.1°C | 40 mm | 73% | 1.6 m/s | 2.7 |
| 1998 | 17.3°C | 11.5°C | 5.6°C | 26.4°C | -4.5°C | 61 mm | 72% | 1.7 m/s | 2.3 |
| 1997 | 12.1°C | 7.0°C | 1.9°C | 18.4°C | -5.3°C | 154 mm | 86% | 1.7 m/s | 2.5 |
| 1996 | 13.7°C | 8.2°C | 2.7°C | 22.6°C | -7.4°C | 65 mm | 83% | 1.7 m/s | 2.6 |
| 1995 | 11.4°C | 5.9°C | 0.4°C | 20.7°C | -6.1°C | 80 mm | 82% | 1.6 m/s | 2.7 |
| 1994 | 13.7°C | 9.0°C | 4.3°C | 22.0°C | -3.0°C | 109 mm | 85% | 1.9 m/s | 2.3 |
| 1993 | 11.4°C | 6.2°C | 1.0°C | 21.0°C | -5.4°C | 73 mm | 82% | 1.7 m/s | 2.6 |
| 1992 | 11.1°C | 6.5°C | 2.0°C | 21.1°C | -4.4°C | 88 mm | 88% | 1.7 m/s | 1.9 |
| 1991 | 15.2°C | 9.4°C | 3.6°C | 26.9°C | -5.2°C | 78 mm | 71% | 1.9 m/s | 2.6 |
| 1990 | 14.9°C | 9.7°C | 4.6°C | 22.3°C | -4.6°C | 56 mm | 87% | 1.8 m/s | 2.1 |
| 1989 ❄️ | 7.5°C | 2.7°C | -2.2°C | 18.5°C | -10.6°C | 131 mm | 81% | 1.9 m/s | 2.5 |
| 1988 | 13.1°C | 6.9°C | 0.8°C | 21.6°C | -5.9°C | 30 mm | 75% | 1.5 m/s | 2.7 |
| 1987 | 15.1°C | 9.3°C | 3.4°C | 23.9°C | -4.4°C | 48 mm | 74% | 1.8 m/s | 2.3 |
| 1986 | 11.7°C | 7.0°C | 2.3°C | 20.2°C | -5.4°C | 86 mm | 85% | 1.6 m/s | 2.2 |
| 1985 | 10.5°C | 5.0°C | -0.6°C | 20.2°C | -8.2°C | 55 mm | 81% | 1.6 m/s | 2.8 |
| 1984 | 18.8°C | 12.4°C | 6.1°C | 25.1°C | -6.6°C | 43 mm | 76% | 1.4 m/s | 2.5 |
| 1983 | 11.2°C | 6.0°C | 0.9°C | 22.7°C | -13.3°C | 153 mm | 81% | 1.9 m/s | — |
| 1982 | 16.2°C | 11.1°C | 6.0°C | 25.3°C | -5.1°C | 128 mm | 83% | 1.7 m/s | — |
| 1981 🌧️ | 10.8°C | 5.5°C | 0.2°C | 22.5°C | -6.3°C | 226 mm | 76% | 1.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 14°C with lows near 3°C (mean 8.5°C), based on 45 years of NASA POWER data.
December averages 98 mm of rainfall in Augusta, about average for rainfall. The wettest on record was 226 mm in 1981.
The hottest December reached 26.9°C in 1991. The coldest dipped to -13.3°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.8°C. Daytime highs moved from 13.5°C to 15.4°C and overnight lows from 2.5°C to 4.2°C over the same span.
December is one of the cooler months of the year in Augusta and about average for rainfall, so plan for around 14°C daytime highs and 3°C at night.
Not quite — December is the 2nd coolest month in Augusta, averaging 8.5°C.
For December in Augusta, pack warm layers and a jacket for chilly mornings, with typical highs of 14°C and lows of 3°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 79% — quite humid.
Average wind speed in December is 1.7 m/s. The windiest December on record averaged 1.9 m/s (1983).
The wettest December on record was 1981 with 226 mm. On average, December sees 98 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 Augusta 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.
