Jacksonville Weather in December
Jacksonville in December sees pleasant temperatures, with highs around 21°C (70°F) and overnight lows of 8°C (46°F). Rainfall is fairly high at around 62 mm (2.4 in) on average, so pack waterproofs just in case.
Rainfall in Jacksonville in December
Typically, you can expect about 8 days of rain this month, with 62 mm (2.4 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Jacksonville in December
Jacksonville has perfect weather in December, with days reaching 21°C (70°F) and nights cooling to 8°C (46°F). During December, the winter season is in full swing. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Jacksonville in December
The area experiences a moderate amount of sunshine, with approximately 181 hours of sunlight expected. This means a decent mix of sun and overcast.
Wind Speed in Jacksonville in December
December sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.
Average water temperature in December
The water is 20°C (68°F) this month — a comfortable temperature that most swimmers enjoy. Warm enough to stay in without getting cold quickly.If you're inclined towards comfortable temperatures and drier conditions, December is a good time to visit Jacksonville.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Jacksonville's climate page.
Jacksonville Temperature in December
Min Temperature
8°C (46°F)
Max Temperature
21°C (70°F)
Water Temperature
20°C (68°F)
Chance of Rain
28%
Precipitation
62 mm (2.4 in)
Rainy days
8 days
Humidity
76%
Windspeed
4 m/s (8 knots)
Sunshine
181 hours
Percentage Sunshine
58%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jacksonville typically stay consistent throughout December, with daily highs averaging around 21°C (70°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Jacksonville in December
Browse day-by-day weather records for Jacksonville spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jacksonville historical weather extremes in December
The extremes listed below come from historical weather data collected in Jacksonville from 1976 through 2025.
- On December 5, 2016, temperatures climbed to 29°C (84°F), marking the warmest December day on record.
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Jacksonville in December
Pleasant temperatures in December mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. The water temperature sits at about 20°C (68°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Jacksonville in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Jacksonville's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Jacksonville climate overview or explore weather in the United States of America.
