Monthly climate guide
Jacksonville weather in December
With highs near 21°C (69°F) and lows around 9°C (49°F), December feels mild in Jacksonville. Rainfall averages about 81 mm (some rain) and the sky is often cloudy. Daytime highs are 2°C cooler than November and 3°C warmer than January.
What stands out in December
- Just 140 km apart, but Jacksonville runs about 3°C cooler than Daytona Beach this month.
- Expect more cloud than at any other time of year.
- December brings early winter to Jacksonville.
- Only one month is cooler in Jacksonville than December.
Avg high
21°C
69°F
Avg low
9°C
49°F
Rainfall
81 mm
some rain
Humidity
84%
relative
Sky
67%
cloud · often cloudy
Jacksonville weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 18°C / 64°F | 6°C / 43°F | 79 mm | 80% | 66% |
| February | 21°C / 70°F | 9°C / 48°F | 78 mm | 81% | 62% |
| March | 24°C / 75°F | 11°C / 52°F | 67 mm | 75% | 52% |
| April | 28°C / 82°F | 15°C / 59°F | 90 mm | 73% | 48% |
| May | 31°C / 88°F | 19°C / 66°F | 106 mm | 69% | 45% |
| June | 32°C / 90°F | 22°C / 72°F | 194 mm | 76% | 58% |
| July | 33°C / 92°F | 23°C / 74°F | 155 mm | 78% | 55% |
| August | 33°C / 91°F | 24°C / 74°F | 173 mm | 81% | 59% |
| September | 31°C / 87°F | 22°C / 71°F | 148 mm | 82% | 60% |
| October | 27°C / 81°F | 17°C / 63°F | 83 mm | 80% | 51% |
| November | 23°C / 73°F | 12°C / 53°F | 65 mm | 80% | 60% |
| December | 21°C / 69°F | 9°C / 49°F | 81 mm | 84% | 67% |
What to pack for December
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is December a good time to visit Jacksonville?
Compare the months in the chart above to find your ideal window.
Best time to visit Jacksonville →Other United States cities in December
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Jacksonville weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/jacksonville/december
<a href="https://weathercompare.eu/weather/usa/jacksonville/december">Jacksonville weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/jacksonville" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Jacksonville weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/jacksonville/december">Jacksonville weather in December</a> – WeatherCompare</p>
Jacksonville in December: quick answers
Is December a good time to visit Jacksonville?
December is a reasonable time for Jacksonville: highs around 21°C and about 81 mm of rain, though not one of the three best months.
How warm is Jacksonville in December?
Average highs are about 21°C (69°F) and average lows about 9°C (49°F), based on 10 years of daily data.
Does it rain a lot in Jacksonville in December?
Jacksonville typically gets around 81 mm of rain in December — some rain.
Figures are long-term averages for the area around Jacksonville (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.