December is one of the cooler months of the year in Florence, with average highs near 10.5°C and lows around 0.2°C (mean 5.4°C). It is a relatively wet time of year, averaging 142 mm of rainfall and 84% relative humidity across the period.
December is one of the cooler months of the year in Florence. Across 45 years of records, the warmest December in Florence was 2021 — when the month averaged 11.3°C — while the coldest was 1989 at -1.1°C. Typical December days reach 10.5°C with nights near 0.2°C. The long-term trend is warming, about 0.7°C per decade.
December is a relatively wet time of year in Florence, averaging 142 mm of rainfall. The wettest December on record was 1990 with 393 mm, while the driest was 2010 at 44 mm.
Relative humidity in Florence during December averages 84%. The most humid December was 1984 at 90%, and the least humid was 2023 at 75%.
December receives about 2.2 kWh/m²/day of solar energy in Florence. The sunniest December was 2004 at 2.6 kWh/m²/day, and the cloudiest was 1992 at 1.7.
Average wind speed in Florence during December is 1.6 m/s. The windiest Decembers were 1982 and 2008 at 1.9 m/s, while the calmest were 1986 and 2014 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.9°C | 5.5°C | 4.7°C | 6.4°C | 7.1°C | +3.2°C |
| Avg High | 8.8°C | 10.6°C | 9.9°C | 11.4°C | 12.6°C | +3.8°C |
| Avg Low | -1.1°C | 0.4°C | -0.6°C | 1.4°C | 1.5°C | +2.6°C |
| Avg Rain | 137 mm | 166 mm | 131 mm | 148 mm | 115 mm | -22 mm |
December temperatures in Florence have risen by about 3.2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -20.1°C (1989) to a record high of 24.3°C (1998).
Rainfall in December is a relatively wet time of year, averaging 142 mm, with a wettest year of 393 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 Florence
If your dates are flexible, the more temperate months of September and June tend to be the most comfortable for visiting Florence. That said, December — with days averaging 10.5°C and nights around 0.2°C (mean 5.4°C) and higher rainfall (142 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 | 11.8°C | 6.2°C | 0.5°C | 22.6°C | -8.2°C | 53 mm | 79% | 1.5 m/s | — |
| 2024 | 11.9°C | 6.7°C | 1.5°C | 18.5°C | -6.9°C | 136 mm | 79% | 1.6 m/s | 2.3 |
| 2023 | 13.5°C | 7.4°C | 1.3°C | 22.1°C | -5.9°C | 77 mm | 75% | 1.4 m/s | 2.5 |
| 2022 | 10.7°C | 5.8°C | 1.0°C | 22.5°C | -15.2°C | 164 mm | 85% | 1.6 m/s | 2 |
| 2021 🔥 | 17.0°C | 11.3°C | 5.7°C | 22.6°C | -3.9°C | 128 mm | 86% | 1.6 m/s | 2 |
| 2020 | 10.6°C | 4.9°C | -0.8°C | 18.9°C | -7.7°C | 133 mm | 84% | 1.4 m/s | 2.5 |
| 2019 | 12.9°C | 8.1°C | 3.3°C | 19.7°C | -5.0°C | 132 mm | 87% | 1.6 m/s | 2.1 |
| 2018 | 10.4°C | 6.0°C | 1.7°C | 20.2°C | -6.2°C | 189 mm | 89% | 1.5 m/s | 1.9 |
| 2017 | 9.8°C | 4.6°C | -0.5°C | 18.8°C | -10.3°C | 139 mm | 78% | 1.4 m/s | 2.2 |
| 2016 | 11.5°C | 5.8°C | 0.2°C | 22.1°C | -12.8°C | 149 mm | 81% | 1.7 m/s | 2.1 |
| 2015 | 16.0°C | 11.1°C | 6.2°C | 23.6°C | -3.4°C | 191 mm | 87% | 1.6 m/s | 2.1 |
| 2014 | 10.9°C | 6.5°C | 2.0°C | 19.3°C | -4.6°C | 149 mm | 88% | 1.3 m/s | 1.9 |
| 2013 | 10.1°C | 5.1°C | 0.1°C | 21.9°C | -7.4°C | 155 mm | 84% | 1.5 m/s | 2 |
| 2012 | 13.6°C | 8.1°C | 2.5°C | 21.5°C | -5.6°C | 175 mm | 84% | 1.7 m/s | 2 |
| 2011 | 11.8°C | 6.5°C | 1.3°C | 18.9°C | -5.3°C | 160 mm | 85% | 1.4 m/s | 2.1 |
| 2010 | 6.5°C | 1.8°C | -2.9°C | 16.8°C | -12.9°C | 44 mm | 78% | 1.7 m/s | 2.3 |
| 2009 | 8.3°C | 3.6°C | -1.2°C | 17.9°C | -6.0°C | 127 mm | 87% | 1.7 m/s | 2 |
| 2008 | 10.2°C | 4.7°C | -0.8°C | 20.7°C | -9.6°C | 223 mm | 82% | 1.9 m/s | 2 |
| 2007 | 13.3°C | 8.1°C | 2.8°C | 22.7°C | -5.2°C | 92 mm | 82% | 1.6 m/s | 2.3 |
| 2006 | 12.7°C | 6.8°C | 1.0°C | 20.3°C | -8.0°C | 92 mm | 82% | 1.5 m/s | 2.4 |
| 2005 | 8.6°C | 3.1°C | -2.5°C | 16.6°C | -7.0°C | 105 mm | 82% | 1.5 m/s | 2.4 |
| 2004 | 8.9°C | 4.1°C | -0.7°C | 19.6°C | -11.3°C | 193 mm | 87% | 1.6 m/s | 2.6 |
| 2003 | 9.7°C | 4.0°C | -1.8°C | 15.1°C | -5.5°C | 81 mm | 81% | 1.6 m/s | 2.4 |
| 2002 | 9.5°C | 4.8°C | 0.1°C | 17.7°C | -6.0°C | 161 mm | 87% | 1.7 m/s | 2.2 |
| 2001 | 12.3°C | 7.2°C | 2.0°C | 20.7°C | -5.9°C | 134 mm | 85% | 1.5 m/s | 2.5 |
| 2000 | 5.4°C | 0.1°C | -5.1°C | 19.3°C | -11.7°C | 102 mm | 81% | 1.6 m/s | 2.2 |
| 1999 | 11.9°C | 5.8°C | -0.3°C | 20.2°C | -6.5°C | 73 mm | 78% | 1.6 m/s | 2.5 |
| 1998 | 11.6°C | 6.4°C | 1.2°C | 24.3°C | -12.0°C | 194 mm | 85% | 1.6 m/s | 2 |
| 1997 | 8.8°C | 4.0°C | -0.7°C | 15.7°C | -5.9°C | 96 mm | 86% | 1.4 m/s | 2.2 |
| 1996 | 11.2°C | 6.1°C | 1.0°C | 19.5°C | -8.0°C | 167 mm | 87% | 1.6 m/s | 2.2 |
| 1995 | 8.4°C | 3.6°C | -1.2°C | 18.9°C | -9.3°C | 113 mm | 83% | 1.6 m/s | 2.2 |
| 1994 | 12.4°C | 7.3°C | 2.2°C | 19.3°C | -5.0°C | 98 mm | 86% | 1.4 m/s | 2.1 |
| 1993 | 9.5°C | 4.7°C | -0.2°C | 17.6°C | -7.9°C | 164 mm | 85% | 1.5 m/s | 2.2 |
| 1992 | 9.2°C | 4.6°C | -0.1°C | 17.4°C | -5.8°C | 113 mm | 88% | 1.4 m/s | 1.7 |
| 1991 | 11.2°C | 6.2°C | 1.2°C | 22.7°C | -5.5°C | 253 mm | 89% | 1.5 m/s | 2.2 |
| 1990 🌧️ | 12.2°C | 6.6°C | 1.0°C | 21.3°C | -10.2°C | 393 mm | 86% | 1.7 m/s | 1.9 |
| 1989 ❄️ | 3.8°C | -1.1°C | -6.1°C | 17.3°C | -20.1°C | 90 mm | 84% | 1.7 m/s | 2.2 |
| 1988 | 10.1°C | 4.5°C | -1.2°C | 18.8°C | -6.2°C | 140 mm | 83% | 1.6 m/s | 2.5 |
| 1987 | 11.9°C | 6.4°C | 0.9°C | 18.4°C | -5.5°C | 168 mm | 84% | 1.7 m/s | 2.1 |
| 1986 | 8.2°C | 3.7°C | -0.7°C | 17.6°C | -4.9°C | 146 mm | 89% | 1.3 m/s | 1.9 |
| 1985 | 6.5°C | 1.2°C | -4.1°C | 19.4°C | -12.4°C | 46 mm | 80% | 1.5 m/s | 2.5 |
| 1984 | 14.1°C | 9.3°C | 4.6°C | 21.9°C | -8.1°C | 72 mm | 90% | 1.5 m/s | 2 |
| 1983 | 5.2°C | 0.5°C | -4.2°C | 20.3°C | -19.6°C | 240 mm | 86% | 1.7 m/s | — |
| 1982 | 12.2°C | 7.9°C | 3.6°C | 21.8°C | -6.5°C | 258 mm | 89% | 1.9 m/s | — |
| 1981 | 7.6°C | 2.4°C | -2.7°C | 16.6°C | -12.9°C | 70 mm | 81% | 1.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 10.5°C with lows near 0.2°C (mean 5.4°C), based on 45 years of NASA POWER data.
December averages 142 mm of rainfall in Florence, a relatively wet time of year. The wettest on record was 393 mm in 1990.
The hottest December reached 24.3°C in 1998. The coldest dipped to -20.1°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 3.2°C. Daytime highs moved from 9.1°C to 13°C and overnight lows from -0.6°C to 2°C over the same span.
December is one of the cooler months of the year in Florence and a relatively wet time of year, so plan for around 10.5°C daytime highs and 0.2°C at night.
Not quite — December is the 2nd coolest month in Florence, averaging 5.4°C.
For December in Florence, pack warm layers and a jacket for chilly mornings, with typical highs of 10.5°C and lows of 0.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 84% — quite humid.
Average wind speed in December is 1.6 m/s. The windiest December on record averaged 1.9 m/s (1982).
The wettest December on record was 1990 with 393 mm. On average, December sees 142 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 Florence 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.
