December is one of the cooler months of the year in Miami, with average highs near 23.8°C and lows around 21.2°C (mean 22.5°C). It is one of the drier months, averaging 53 mm of rainfall and 77% relative humidity across the period.
December is one of the cooler months of the year in Miami. Across 45 years of records, the warmest December in Miami was 2015 — when the month averaged 25.3°C — while the coldest was 2010 at 18°C. Typical December days reach 23.8°C with nights near 21.2°C. The long-term trend is warming, about 0.4°C per decade.
December is one of the drier months in Miami, averaging 53 mm of rainfall. The wettest December on record was 1994 with 142 mm, while the driest was 2008 at 13 mm.
Relative humidity in Miami during December averages 77%. The most humid December was 2015 at 83%, and the least humid was 2010 at 72%.
December receives about 3.4 kWh/m²/day of solar energy in Miami. The sunniest Decembers were 2010 and 2017 at 3.9 kWh/m²/day, and the cloudiest was 2023 at 2.8.
Average wind speed in Miami during December is 4.7 m/s. The windiest December was 1982 at 5.7 m/s, while the calmest was 2021 at 3.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.9°C | 22.3°C | 22.4°C | 23.0°C | 23.2°C | +1.3°C |
| Avg High | 23.3°C | 23.5°C | 23.8°C | 24.3°C | 24.5°C | +1.2°C |
| Avg Low | 20.5°C | 21.0°C | 21.1°C | 21.7°C | 21.9°C | +1.4°C |
| Avg Rain | 53 mm | 57 mm | 51 mm | 53 mm | 51 mm | -1 mm |
December temperatures in Miami have risen by about 1.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 3.5°C (1989) to a record high of 27.9°C (2023).
Rainfall in December is one of the drier months, averaging 53 mm, with a wettest year of 142 mm.
One of the best times to visit Miami
December is one of the best times to visit Miami. Expect days averaging 23.8°C and nights around 21.2°C (mean 22.5°C) — cooler than Miami's yearly average — with moderate rainfall (53 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 25.2°C | 23.8°C | 22.5°C | 27.6°C | 13.4°C | 42 mm | 77% | 4.1 m/s | — |
| 2024 | 24.3°C | 23.0°C | 21.7°C | 26.4°C | 17.4°C | 43 mm | 77% | 4.9 m/s | 3.5 |
| 2023 | 24.0°C | 22.9°C | 21.7°C | 27.9°C | 16.9°C | 107 mm | 78% | 5.5 m/s | 2.8 |
| 2022 | 24.5°C | 23.3°C | 22.0°C | 26.7°C | 11.7°C | 61 mm | 78% | 4.4 m/s | 3.3 |
| 2021 | 25.7°C | 24.5°C | 23.3°C | 27.1°C | 17.7°C | 23 mm | 76% | 3.5 m/s | 3.7 |
| 2020 | 23.3°C | 21.6°C | 19.9°C | 26.3°C | 13.7°C | 33 mm | 77% | 4.8 m/s | 3.7 |
| 2019 | 24.8°C | 23.4°C | 22.0°C | 27.2°C | 15.1°C | 108 mm | 79% | 5.3 m/s | 3.2 |
| 2018 | 24.4°C | 23.0°C | 21.6°C | 27.7°C | 14.6°C | 35 mm | 77% | 5.1 m/s | 3.5 |
| 2017 | 23.9°C | 22.5°C | 21.1°C | 26.9°C | 13.1°C | 18 mm | 75% | 3.7 m/s | 3.9 |
| 2016 | 25.7°C | 24.7°C | 23.7°C | 27.2°C | 18.4°C | 73 mm | 80% | 4.7 m/s | 3.6 |
| 2015 🔥 | 26.1°C | 25.3°C | 24.5°C | 27.5°C | 22.2°C | 135 mm | 83% | 4.8 m/s | 3 |
| 2014 | 24.0°C | 22.8°C | 21.5°C | 26.5°C | 15.3°C | 32 mm | 74% | 3.8 m/s | 3.6 |
| 2013 | 25.3°C | 24.4°C | 23.5°C | 27.1°C | 21.3°C | 54 mm | 79% | 4.8 m/s | 3.3 |
| 2012 | 24.4°C | 23.0°C | 21.6°C | 26.8°C | 13.7°C | 21 mm | 76% | 4.7 m/s | 3.5 |
| 2011 | 24.2°C | 23.0°C | 21.8°C | 25.8°C | 16.4°C | 31 mm | 75% | 4.7 m/s | 3.6 |
| 2010 ❄️ | 20.2°C | 18.0°C | 15.9°C | 26.4°C | 7.0°C | 24 mm | 72% | 4.8 m/s | 3.9 |
| 2009 | 24.6°C | 23.1°C | 21.6°C | 27.8°C | 14.1°C | 125 mm | 80% | 4.7 m/s | 3.1 |
| 2008 | 23.6°C | 22.4°C | 21.1°C | 25.4°C | 16.4°C | 13 mm | 75% | 4.5 m/s | 3.4 |
| 2007 | 25.1°C | 23.8°C | 22.6°C | 27.0°C | 15.4°C | 21 mm | 78% | 4.2 m/s | 3.6 |
| 2006 | 24.7°C | 23.7°C | 22.8°C | 26.3°C | 16.2°C | 75 mm | 79% | 5.3 m/s | 3 |
| 2005 | 23.3°C | 21.7°C | 20.2°C | 26.0°C | 14.1°C | 23 mm | 78% | 4.2 m/s | 3.6 |
| 2004 | 23.3°C | 21.8°C | 20.2°C | 27.1°C | 13.6°C | 26 mm | 74% | 4.9 m/s | 3.3 |
| 2003 | 22.5°C | 20.8°C | 19.1°C | 26.0°C | 12.6°C | 38 mm | 74% | 5.1 m/s | 3.3 |
| 2002 | 23.8°C | 22.2°C | 20.5°C | 26.6°C | 15.4°C | 87 mm | 78% | 4.7 m/s | 3.4 |
| 2001 | 24.5°C | 23.4°C | 22.2°C | 26.1°C | 14.4°C | 51 mm | 78% | 4.7 m/s | 3.3 |
| 2000 | 22.9°C | 21.5°C | 20.2°C | 26.3°C | 10.6°C | 57 mm | 77% | 5.4 m/s | 3.3 |
| 1999 | 23.2°C | 22.1°C | 20.9°C | 25.6°C | 14.6°C | 34 mm | 76% | 4.4 m/s | 3.3 |
| 1998 | 24.7°C | 23.6°C | 22.5°C | 26.1°C | 16.2°C | 49 mm | 77% | 4.8 m/s | 3.6 |
| 1997 | 23.0°C | 21.4°C | 19.8°C | 26.4°C | 14.0°C | 138 mm | 80% | 5 m/s | 3.2 |
| 1996 | 23.6°C | 22.3°C | 20.9°C | 25.9°C | 12.1°C | 36 mm | 76% | 4.5 m/s | 3.5 |
| 1995 | 22.1°C | 20.9°C | 19.6°C | 25.3°C | 9.8°C | 33 mm | 77% | 4.7 m/s | 3.3 |
| 1994 🌧️ | 23.9°C | 22.7°C | 21.5°C | 26.6°C | 15.4°C | 142 mm | 80% | 4.6 m/s | 3.3 |
| 1993 | 22.9°C | 21.3°C | 19.7°C | 25.7°C | 13.5°C | 24 mm | 77% | 4.5 m/s | 3.5 |
| 1992 | 23.6°C | 22.5°C | 21.4°C | 25.3°C | 14.3°C | 43 mm | 75% | 4.4 m/s | 3.2 |
| 1991 | 23.7°C | 22.7°C | 21.7°C | 26.2°C | 17.8°C | 34 mm | 78% | 4.6 m/s | 3.3 |
| 1990 | 24.1°C | 23.1°C | 22.1°C | 25.5°C | 15.3°C | 39 mm | 75% | 4.9 m/s | 3.4 |
| 1989 | 22.0°C | 19.9°C | 17.8°C | 25.7°C | 3.5°C | 28 mm | 76% | 4.3 m/s | 3.2 |
| 1988 | 23.4°C | 22.0°C | 20.5°C | 25.0°C | 12.6°C | 18 mm | 75% | 4.4 m/s | 3.4 |
| 1987 | 23.2°C | 21.8°C | 20.4°C | 25.5°C | 14.7°C | 58 mm | 75% | 4.9 m/s | 3.2 |
| 1986 | 24.7°C | 23.7°C | 22.7°C | 26.5°C | 19.0°C | 125 mm | 80% | 4.7 m/s | 2.9 |
| 1985 | 22.5°C | 20.8°C | 19.1°C | 25.8°C | 8.7°C | 72 mm | 76% | 4.5 m/s | 3 |
| 1984 | 23.9°C | 22.9°C | 21.9°C | 26.0°C | 13.6°C | 13 mm | 74% | 4.9 m/s | 3.3 |
| 1983 | 24.1°C | 22.5°C | 21.0°C | 26.7°C | 7.1°C | 116 mm | 81% | 4.8 m/s | — |
| 1982 | 23.7°C | 22.7°C | 21.6°C | 26.1°C | 14.0°C | 31 mm | 76% | 5.7 m/s | — |
| 1981 | 22.5°C | 20.9°C | 19.3°C | 26.3°C | 10.4°C | 13 mm | 76% | 4.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 23.8°C with lows near 21.2°C (mean 22.5°C), based on 45 years of NASA POWER data.
December averages 53 mm of rainfall in Miami, one of the drier months. The wettest on record was 142 mm in 1994.
The hottest December reached 27.9°C in 2023. The coldest dipped to 3.5°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.5°C. Daytime highs moved from 23.3°C to 24.7°C and overnight lows from 20.6°C to 22.2°C over the same span.
December is one of the cooler months of the year in Miami and one of the drier months, so plan for around 23.8°C daytime highs and 21.2°C at night.
Not quite — December is the 3rd coolest month in Miami, averaging 22.5°C.
For December in Miami, pack light layers you can adjust through the day, with typical highs of 23.8°C and lows of 21.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 77% — quite humid.
Average wind speed in December is 4.7 m/s. The windiest December on record averaged 5.7 m/s (1982).
The wettest December on record was 1994 with 142 mm. On average, December sees 53 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 Miami 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.
