December is one of the cooler months of the year in Gainesville, with average highs near 20.4°C and lows around 8.8°C (mean 14.6°C). It is one of the drier months, averaging 69 mm of rainfall and 81% relative humidity across the period.
December is one of the cooler months of the year in Gainesville. Across 45 years of records, the warmest December in Gainesville was 2015 — when the month averaged 19.9°C — while the coldest was 2010 at 8.9°C. Typical December days reach 20.4°C with nights near 8.8°C. The long-term trend is warming, about 0.5°C per decade.
December is one of the drier months in Gainesville, averaging 69 mm of rainfall. The wettest December on record was 2018 with 214 mm, while the driest was 1984 at 15 mm.
Relative humidity in Gainesville during December averages 81%. The most humid December was 1994 at 89%, and the least humid was 2010 at 65%.
December receives about 3 kWh/m²/day of solar energy in Gainesville. The sunniest December was 2010 at 3.5 kWh/m²/day, and the cloudiest was 2009 at 2.3.
Average wind speed in Gainesville during December is 1.1 m/s. The windiest Decembers were 1983, 2010 and 2019 at 1.3 m/s, while the calmest was 1984 at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.6°C | 14.5°C | 14.2°C | 15.6°C | 15.6°C | +2°C |
| Avg High | 19.2°C | 20.2°C | 20.1°C | 21.4°C | 21.8°C | +2.6°C |
| Avg Low | 8.0°C | 8.9°C | 8.2°C | 9.8°C | 9.4°C | +1.4°C |
| Avg Rain | 73 mm | 65 mm | 74 mm | 75 mm | 52 mm | -21 mm |
December temperatures in Gainesville have risen by about 2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -10.3°C (1989) to a record high of 29.1°C (2001).
Rainfall in December is one of the drier months, averaging 69 mm, with a wettest year of 214 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.7°C per decade while lows rose 0.4°C per decade, widening the gap between day and night.
A good time to visit Gainesville
December is a good time to visit Gainesville, with days averaging 20.4°C and nights around 8.8°C (mean 14.6°C, cooler than Gainesville's yearly average) and moderate rainfall. October and April are marginally more temperate, but December still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 22.6°C | 16.0°C | 9.5°C | 27.1°C | -0.3°C | 42 mm | 75% | 1.1 m/s | — |
| 2024 | 22.1°C | 15.5°C | 8.8°C | 28.4°C | -0.8°C | 27 mm | 76% | 1.1 m/s | 3.1 |
| 2023 | 20.3°C | 15.0°C | 9.8°C | 27.8°C | 1.9°C | 127 mm | 83% | 1.2 m/s | 2.8 |
| 2022 | 21.7°C | 15.3°C | 8.9°C | 28.7°C | -5.2°C | 28 mm | 76% | 1 m/s | 3.1 |
| 2021 | 24.3°C | 18.5°C | 12.8°C | 28.0°C | 2.3°C | 40 mm | 86% | 1 m/s | 3 |
| 2020 | 19.6°C | 13.0°C | 6.3°C | 26.7°C | -3.1°C | 47 mm | 77% | 1.1 m/s | 3.3 |
| 2019 | 21.7°C | 16.2°C | 10.8°C | 27.1°C | 0.6°C | 103 mm | 85% | 1.3 m/s | 2.9 |
| 2018 🌧️ | 19.9°C | 14.9°C | 9.9°C | 27.4°C | 0.6°C | 214 mm | 86% | 1.1 m/s | 2.8 |
| 2017 | 19.9°C | 14.5°C | 9.1°C | 25.7°C | -1.0°C | 64 mm | 86% | 1 m/s | 3.1 |
| 2016 | 23.9°C | 17.6°C | 11.4°C | 28.2°C | 2.0°C | 56 mm | 76% | 1.1 m/s | 3.1 |
| 2015 🔥 | 24.9°C | 19.9°C | 14.9°C | 28.6°C | 3.0°C | 40 mm | 85% | 1.1 m/s | 2.9 |
| 2014 | 20.8°C | 15.3°C | 9.8°C | 26.0°C | 1.8°C | 71 mm | 85% | 1 m/s | 3 |
| 2013 | 22.5°C | 16.5°C | 10.5°C | 28.2°C | 2.2°C | 79 mm | 83% | 1.1 m/s | 3.1 |
| 2012 | 21.5°C | 15.3°C | 9.2°C | 26.1°C | -0.2°C | 77 mm | 81% | 1.1 m/s | 2.9 |
| 2011 | 22.8°C | 16.5°C | 10.3°C | 27.1°C | 2.9°C | 24 mm | 80% | 1.2 m/s | 3 |
| 2010 ❄️ | 16.2°C | 8.9°C | 1.7°C | 24.7°C | -5.2°C | 24 mm | 65% | 1.3 m/s | 3.5 |
| 2009 | 18.8°C | 13.8°C | 8.9°C | 26.6°C | -0.5°C | 99 mm | 85% | 1.2 m/s | 2.3 |
| 2008 | 21.7°C | 15.6°C | 9.5°C | 27.0°C | -0.1°C | 26 mm | 79% | 1.1 m/s | 3.3 |
| 2007 | 23.3°C | 17.0°C | 10.6°C | 28.2°C | 0.0°C | 62 mm | 80% | 1 m/s | 3.2 |
| 2006 | 23.2°C | 17.4°C | 11.6°C | 27.4°C | 0.3°C | 88 mm | 78% | 1.1 m/s | 2.8 |
| 2005 | 17.5°C | 11.7°C | 6.0°C | 24.1°C | -1.4°C | 143 mm | 82% | 1.2 m/s | 3 |
| 2004 | 17.4°C | 11.9°C | 6.3°C | 25.9°C | -2.9°C | 63 mm | 85% | 1.2 m/s | 3 |
| 2003 | 19.2°C | 12.4°C | 5.6°C | 25.2°C | -2.8°C | 31 mm | 76% | 1.1 m/s | 3.3 |
| 2002 | 17.8°C | 12.0°C | 6.1°C | 24.5°C | 0.2°C | 176 mm | 85% | 1.2 m/s | 3 |
| 2001 | 23.3°C | 17.7°C | 12.1°C | 29.1°C | 0.4°C | 28 mm | 76% | 1 m/s | 3 |
| 2000 | 19.2°C | 12.3°C | 5.3°C | 28.0°C | -5.6°C | 20 mm | 71% | 1.2 m/s | 3.1 |
| 1999 | 20.5°C | 14.2°C | 7.8°C | 25.9°C | -2.7°C | 33 mm | 76% | 1.1 m/s | 3.1 |
| 1998 | 23.1°C | 17.4°C | 11.6°C | 27.5°C | 1.4°C | 22 mm | 81% | 1 m/s | 3.1 |
| 1997 | 17.7°C | 13.0°C | 8.3°C | 25.4°C | -1.7°C | 214 mm | 88% | 1.2 m/s | 2.7 |
| 1996 | 19.2°C | 13.7°C | 8.3°C | 25.6°C | -4.3°C | 120 mm | 85% | 1 m/s | 2.9 |
| 1995 | 18.6°C | 12.7°C | 6.9°C | 25.7°C | -4.1°C | 65 mm | 78% | 1.1 m/s | 3 |
| 1994 | 20.1°C | 15.1°C | 10.1°C | 26.2°C | 3.6°C | 48 mm | 89% | 1.1 m/s | 3 |
| 1993 | 17.6°C | 11.8°C | 6.0°C | 25.0°C | -1.3°C | 57 mm | 79% | 1.2 m/s | 3 |
| 1992 | 20.0°C | 14.7°C | 9.3°C | 25.0°C | 1.5°C | 22 mm | 87% | 1.1 m/s | 2.8 |
| 1991 | 21.7°C | 15.8°C | 9.9°C | 28.9°C | 0.6°C | 29 mm | 77% | 1.1 m/s | 3 |
| 1990 | 23.0°C | 16.9°C | 10.9°C | 28.2°C | 2.1°C | 36 mm | 76% | 1.1 m/s | 3 |
| 1989 | 14.9°C | 9.1°C | 3.3°C | 23.3°C | -10.3°C | 96 mm | 80% | 1.1 m/s | 2.9 |
| 1988 | 18.6°C | 12.7°C | 6.8°C | 24.0°C | -3.4°C | 35 mm | 84% | 1 m/s | 3.1 |
| 1987 | 21.1°C | 15.3°C | 9.5°C | 26.5°C | -1.0°C | 28 mm | 79% | 1.1 m/s | 2.9 |
| 1986 | 19.4°C | 15.0°C | 10.6°C | 26.5°C | 3.5°C | 129 mm | 88% | 1.2 m/s | 2.4 |
| 1985 | 16.8°C | 10.9°C | 5.0°C | 25.0°C | -6.9°C | 44 mm | 81% | 1.1 m/s | 3.3 |
| 1984 | 24.1°C | 17.9°C | 11.6°C | 27.5°C | -1.2°C | 15 mm | 77% | 0.9 m/s | 3 |
| 1983 | 17.4°C | 12.3°C | 7.2°C | 26.4°C | -8.0°C | 162 mm | 84% | 1.3 m/s | — |
| 1982 | 21.6°C | 16.6°C | 11.5°C | 27.0°C | 0.0°C | 58 mm | 84% | 1.2 m/s | — |
| 1981 | 18.5°C | 12.7°C | 6.8°C | 27.0°C | -5.3°C | 90 mm | 76% | 1.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 20.4°C with lows near 8.8°C (mean 14.6°C), based on 45 years of NASA POWER data.
December averages 69 mm of rainfall in Gainesville, one of the drier months. The wettest on record was 214 mm in 2018.
The hottest December reached 29.1°C in 2001. The coldest dipped to -10.3°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2°C. Daytime highs moved from 19.7°C to 22.2°C and overnight lows from 8.4°C to 10°C over the same span.
December is one of the cooler months of the year in Gainesville and one of the drier months, so plan for around 20.4°C daytime highs and 8.8°C at night.
Not quite — December is the 2nd coolest month in Gainesville, averaging 14.6°C.
For December in Gainesville, pack light layers you can adjust through the day, with typical highs of 20.4°C and lows of 8.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 81% — quite humid.
Average wind speed in December is 1.1 m/s. The windiest December on record averaged 1.3 m/s (1983).
The wettest December on record was 2018 with 214 mm. On average, December sees 69 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 Gainesville 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.
