December is one of the cooler months of the year in Mobile, with average highs near 16.7°C and lows around 9.7°C (mean 13.2°C). It is about average for rainfall, averaging 131 mm of rainfall and 83% relative humidity across the period.
December is one of the cooler months of the year in Mobile. Across 45 years of records, the warmest December in Mobile was 2021 — when the month averaged 17.1°C — while the coldest was 1989 at 7.9°C. Typical December days reach 16.7°C with nights near 9.7°C. The long-term trend is warming, about 0.4°C per decade.
December is about average for rainfall in Mobile, averaging 131 mm of rainfall. The wettest December on record was 2009 with 380 mm, while the driest was 2010 at 34 mm.
Relative humidity in Mobile during December averages 83%. The most humid December was 2021 at 90%, and the least humid was 2010 at 75%.
December receives about 2.7 kWh/m²/day of solar energy in Mobile. The sunniest December was 2010 at 3.1 kWh/m²/day, and the cloudiest were 1992, 2009 and 2018, among others at 2.3.
Average wind speed in Mobile during December is 3.1 m/s. The windiest Decembers were 1982 and 1983 at 3.7 m/s, while the calmest was 1984 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.3°C | 13.4°C | 12.7°C | 13.8°C | 13.9°C | +1.6°C |
| Avg High | 15.7°C | 16.8°C | 16.3°C | 17.3°C | 17.4°C | +1.7°C |
| Avg Low | 8.9°C | 10.0°C | 9.0°C | 10.2°C | 10.5°C | +1.6°C |
| Avg Rain | 137 mm | 115 mm | 137 mm | 138 mm | 126 mm | -11 mm |
December temperatures in Mobile have risen by about 1.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -9.2°C (1989) to a record high of 25°C (2022).
Rainfall in December is about average for rainfall, averaging 131 mm, with a wettest year of 380 mm.
A quieter season to visit Mobile
If your dates are flexible, the more temperate months of October and May tend to be the most comfortable for visiting Mobile. That said, December — with days averaging 16.7°C and nights around 9.7°C (mean 13.2°C) and higher rainfall (131 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 | 16.9°C | 13.3°C | 9.6°C | 22.1°C | -0.2°C | 146 mm | 85% | 2.6 m/s | — |
| 2024 | 17.7°C | 13.9°C | 10.1°C | 22.6°C | 3.0°C | 142 mm | 82% | 2.8 m/s | 3 |
| 2023 | 16.4°C | 13.1°C | 9.8°C | 22.5°C | 4.2°C | 156 mm | 83% | 3 m/s | 2.9 |
| 2022 | 17.1°C | 13.9°C | 10.7°C | 25.0°C | -3.1°C | 147 mm | 85% | 2.5 m/s | 2.5 |
| 2021 🔥 | 20.2°C | 17.1°C | 14.1°C | 24.0°C | 6.5°C | 61 mm | 90% | 2.5 m/s | 2.6 |
| 2020 | 16.2°C | 12.3°C | 8.5°C | 21.4°C | 1.6°C | 102 mm | 82% | 2.9 m/s | 3 |
| 2019 | 17.3°C | 13.8°C | 10.4°C | 21.9°C | 2.5°C | 111 mm | 86% | 3.1 m/s | 2.5 |
| 2018 | 16.8°C | 13.7°C | 10.5°C | 23.6°C | 4.5°C | 223 mm | 85% | 3.2 m/s | 2.3 |
| 2017 | 15.5°C | 12.2°C | 8.8°C | 23.2°C | 0.9°C | 95 mm | 85% | 2.9 m/s | 2.4 |
| 2016 | 18.2°C | 14.6°C | 11.0°C | 23.1°C | 2.7°C | 247 mm | 83% | 2.9 m/s | 2.5 |
| 2015 | 19.8°C | 17.0°C | 14.2°C | 23.9°C | 4.8°C | 248 mm | 88% | 3 m/s | 2.5 |
| 2014 | 18.2°C | 14.5°C | 10.8°C | 23.5°C | 5.7°C | 126 mm | 83% | 2.6 m/s | 2.7 |
| 2013 | 16.6°C | 13.1°C | 9.5°C | 23.3°C | 1.2°C | 153 mm | 85% | 3 m/s | 2.4 |
| 2012 | 18.4°C | 14.6°C | 10.8°C | 22.6°C | 1.3°C | 84 mm | 83% | 2.9 m/s | 2.7 |
| 2011 | 17.7°C | 14.0°C | 10.3°C | 22.6°C | 3.4°C | 56 mm | 82% | 2.9 m/s | 2.6 |
| 2010 | 14.0°C | 10.0°C | 6.1°C | 21.1°C | -0.6°C | 34 mm | 75% | 3.5 m/s | 3.1 |
| 2009 🌧️ | 15.0°C | 11.7°C | 8.4°C | 21.4°C | 2.4°C | 380 mm | 84% | 3.6 m/s | 2.3 |
| 2008 | 17.9°C | 14.3°C | 10.7°C | 21.8°C | 0.0°C | 100 mm | 84% | 3.2 m/s | 2.6 |
| 2007 | 18.4°C | 14.9°C | 11.4°C | 23.1°C | 2.7°C | 154 mm | 85% | 2.8 m/s | 2.8 |
| 2006 | 17.1°C | 13.2°C | 9.2°C | 22.1°C | -1.7°C | 128 mm | 83% | 3.2 m/s | 2.7 |
| 2005 | 15.9°C | 12.2°C | 8.5°C | 23.3°C | 3.0°C | 83 mm | 77% | 3.3 m/s | 2.8 |
| 2004 | 15.6°C | 12.1°C | 8.7°C | 23.2°C | -0.7°C | 93 mm | 81% | 3.4 m/s | 2.9 |
| 2003 | 15.5°C | 11.6°C | 7.7°C | 20.4°C | 4.0°C | 104 mm | 79% | 3.5 m/s | 3 |
| 2002 | 15.6°C | 12.3°C | 9.1°C | 21.6°C | 2.9°C | 188 mm | 82% | 3.2 m/s | 2.9 |
| 2001 | 18.5°C | 14.7°C | 10.9°C | 23.6°C | 2.3°C | 65 mm | 79% | 2.9 m/s | 2.9 |
| 2000 | 13.9°C | 9.7°C | 5.4°C | 22.5°C | -2.5°C | 79 mm | 82% | 3.4 m/s | 2.7 |
| 1999 | 17.2°C | 13.2°C | 9.3°C | 22.8°C | 2.4°C | 109 mm | 77% | 3.1 m/s | 3 |
| 1998 | 18.7°C | 15.6°C | 12.4°C | 24.8°C | 4.5°C | 94 mm | 86% | 2.9 m/s | 2.6 |
| 1997 | 14.6°C | 11.4°C | 8.2°C | 20.5°C | 2.4°C | 98 mm | 84% | 3.3 m/s | 2.7 |
| 1996 | 17.5°C | 13.9°C | 10.2°C | 22.4°C | -0.9°C | 135 mm | 83% | 3 m/s | 2.8 |
| 1995 | 15.6°C | 12.2°C | 8.7°C | 22.5°C | -2.2°C | 208 mm | 84% | 3.1 m/s | 2.6 |
| 1994 | 17.0°C | 13.8°C | 10.5°C | 21.4°C | 4.1°C | 105 mm | 85% | 2.8 m/s | 2.5 |
| 1993 | 14.8°C | 11.5°C | 8.2°C | 21.9°C | 1.1°C | 105 mm | 82% | 3.1 m/s | 2.6 |
| 1992 | 17.3°C | 14.0°C | 10.7°C | 21.7°C | 5.8°C | 125 mm | 86% | 3 m/s | 2.3 |
| 1991 | 16.8°C | 13.5°C | 10.2°C | 23.3°C | 3.5°C | 73 mm | 82% | 2.9 m/s | 2.8 |
| 1990 | 18.1°C | 14.8°C | 11.5°C | 23.2°C | -0.7°C | 99 mm | 83% | 3.2 m/s | 2.3 |
| 1989 ❄️ | 11.6°C | 7.9°C | 4.2°C | 19.3°C | -9.2°C | 165 mm | 83% | 3.4 m/s | 2.6 |
| 1988 | 16.0°C | 12.6°C | 9.2°C | 20.3°C | 1.7°C | 61 mm | 83% | 2.8 m/s | 2.8 |
| 1987 | 17.4°C | 14.3°C | 11.2°C | 22.2°C | 1.9°C | 113 mm | 83% | 3.1 m/s | 2.4 |
| 1986 | 15.1°C | 12.2°C | 9.3°C | 22.3°C | 4.9°C | 114 mm | 86% | 3.2 m/s | 2.3 |
| 1985 | 14.5°C | 10.7°C | 6.9°C | 23.9°C | -2.7°C | 127 mm | 79% | 3 m/s | 3 |
| 1984 | 19.1°C | 15.9°C | 12.7°C | 22.6°C | -1.5°C | 73 mm | 88% | 2.4 m/s | 2.3 |
| 1983 | 14.2°C | 10.3°C | 6.4°C | 21.6°C | -6.7°C | 170 mm | 83% | 3.7 m/s | — |
| 1982 | 17.8°C | 14.9°C | 12.0°C | 24.1°C | 1.0°C | 240 mm | 86% | 3.7 m/s | — |
| 1981 | 15.7°C | 12.0°C | 8.2°C | 21.8°C | -3.0°C | 172 mm | 75% | 3.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 16.7°C with lows near 9.7°C (mean 13.2°C), based on 45 years of NASA POWER data.
December averages 131 mm of rainfall in Mobile, about average for rainfall. The wettest on record was 380 mm in 2009.
The hottest December reached 25°C in 2022. The coldest dipped to -9.2°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 16.3°C to 17.7°C and overnight lows from 9.2°C to 10.9°C over the same span.
December is one of the cooler months of the year in Mobile and about average for rainfall, so plan for around 16.7°C daytime highs and 9.7°C at night.
Not quite — December is the 2nd coolest month in Mobile, averaging 13.2°C.
For December in Mobile, pack light layers you can adjust through the day, with typical highs of 16.7°C and lows of 9.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 83% — quite humid.
Average wind speed in December is 3.1 m/s. The windiest December on record averaged 3.7 m/s (1982).
The wettest December on record was 2009 with 380 mm. On average, December sees 131 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 Mobile 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.
