Jacksonville weather in December

In December, Jacksonville sees average daytime highs of 67°F and overnight lows near 48°F, with 2.3 in of rain across 6.5 wet days and about 10.1 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 70°F in the first days to 66°F by the end. The sky is clear or mostly clear about 35% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 12 min at the start of December to 10 h 06 min by month's end. Set against the rest of the year, December is Jacksonville's 8th-clearest and 6th-windiest month. For the whole year in context, see Jacksonville's year-round climate.

Daytime high
67°
11th warmest
Overnight low
48°
3rd coldest
Rainfall
2.3 in
6.5 wet days
Daylight
10 h 06 min
7:21 AM – 5:24 PM
Cloud cover
56%
8th clearest
Wind
6 mph
6th windiest
Solar energy
2.77 kWh/m²
Travel score
6.8
out of 10

Jacksonville is city in Duval County, and largest city in State of Florida, United States.

Density
446/km²
people per km²
Founded
1791

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 70°F in the first days to 66°F by the end.

A typical December day in Jacksonville reaches about 67°F in the afternoon and slips back to 48°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 78°F. Set against its neighbours, December runs about 5°F cooler than November and about 2°F warmer than January.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
17050
27050
37050
46949
56949
66949
76949
86949
96849
106849
116848
126848
136848
146748
156748
166748
176747
186747
196747
206747
216747
226647
236647
246647
256647
266647
276647
286647
296647
306646
316646

How December really feels in Jacksonville

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Jacksonville weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan65° / 45°2.67.310.36.5
Feb69° / 48°2.56.910.96.8
Mar74° / 52°3.07.511.87.4
Apr80° / 59°2.36.912.77.2
May85° / 66°2.68.913.55.4
Jun89° / 72°5.118.913.93.4
Jul90° / 74°4.920.413.82.9
Aug89° / 74°5.521.613.12.9
Sep86° / 72°4.815.912.24.2
Oct80° / 63°2.89.211.36.7
Nov73° / 53°1.6610.57.5
Dec67° / 48°2.36.510.16.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35446
45446
55347
65248
75248
85149
95149
105149
115050
125050
135050
144951
154951
164951
174852
184852
194951
204951
214852
224852
234753
244753
254654
264654
274555
284456
294456
304456
314555

Chance of precipitation in December

Any precipitation

Jacksonville gets around 2.3 in of rain over 6.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 22% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
118
218
318
418
518
619
719
820
920
1021
1121
1222
1322
1423
1523
1624
1724
1824
1924
2024
2124
2224
2323
2423
2523
2623
2723
2822
2922
3022
3121

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 63% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15519188
25619178
35719177
45719177
55819167
65819167
75819167
85819167
95919157
106018157
116118156
126118156
136317146
146317146
156317146
166516136
176615136
186615136
196714136
206814126
216814126
226913126
236913126
246813127
256813127
266714127
276714127
286714127
296615127
306715117
316815116

Wind in December

Winds average 6 mph in December.

Across December, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 12 min at the start of December to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:11 AM to 7:28 AM, and sunset from 5:22 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.27:115:22
210.27:125:22
310.27:125:22
410.17:135:22
510.17:145:22
610.17:155:22
710.17:155:22
810.17:165:22
910.17:175:23
1010.17:175:23
1110.17:185:23
1210.17:195:23
1310.17:195:23
1410.17:205:24
1510.17:215:24
1610.17:215:24
1710.07:225:25
1810.07:225:25
1910.07:235:25
2010.07:235:26
2110.07:245:26
2210.07:245:27
2310.07:255:27
2410.07:255:28
2510.07:265:28
2610.07:265:29
2710.07:265:29
2810.17:275:30
2910.17:275:31
3010.17:275:31
3110.17:285:32

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.77 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.77 kWh/m² to a high of 6.31 kWh/m² in May across the year — December's 2.77 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.9Moderate
42.9Moderate
52.9Moderate
62.8Moderate
72.8Moderate
82.8Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.8Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in December

Hazard calendar for Jacksonville

In seasonPeak

None of Jacksonville's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Jacksonville sits in the Atlantic hurricane belt; the season peaks August–October.

Jacksonville's rainy season runs May–October, when most of the year's rain falls.

Atlantic hurricane
Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Jacksonville?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.8
Sightseeing
4th-best month of the year
3.4
Beach & pool
11th-best month of the year

December is a reasonable time to visit Jacksonville for sightseeing.

What to pack for Jacksonville in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Jacksonville sees daytime highs around 67°F and nights near 48°F. Little to plan around — just the basics. About 7 days see rain.

Sea temperature near Jacksonville in December

The nearest coast averages about 65°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 mi away) is warmest in August at about 82°F and coldest in February near 61°F.

It's comfortable for a long swim from Apr 13 to Nov 28 — about 7.6 months when the water holds above 68°F.

60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan62Cool
Feb61Cool
Mar63Cool
Apr69Refreshing
May75Refreshing
Jun80Warm
Jul82Warm
Aug82Tropical
Sep82Warm
Oct78Warm
Nov70Refreshing
Dec65Cool

UV index in Jacksonville in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jacksonville peaks around June 22 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 22UV 10Dec 19UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr7High
May8Very high
Jun11Extreme
Jul10Extreme
Aug10Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Jacksonville in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Jacksonville is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (December, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1618 µg/m³Dec 138 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb13Moderate
Mar12Moderate
Apr13Moderate
May14Moderate
Jun16Moderate
Jul18Moderate
Aug16Moderate
Sep12Good
Oct8Good
Nov8Good
Dec7Good
Location & terrain

Where is Jacksonville?

Jacksonville sits at 30.3°N, 81.7°W, 16 ft above sea level, in United States. The nearest listed city is Fruit Cove, 16 mi away.

Topography around Jacksonville

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Jacksonville.

Within 2 miles, the terrain around Jacksonville has only modest variations in elevation — a maximum elevation change of 72 ft around an average of 20 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 154 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 308 ft.

The land around Jacksonville is covered by artificial surfaces (51%) and trees (23%) within 2 miles, trees (49%) and artificial surfaces (23%) within 10 miles, and trees (62%) and water (26%) within 50 miles.

2 miles
72 ft
10 miles
154 ft
50 miles
308 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Fruit Cove 16 mi · Oakleaf Plantation 16 mi · Lakeside 16 mi · Jacksonville Beach 16 mi · Fleming Island 17 mi · Ponte Vedra Beach 17 mi · St. Johns 19 mi · Palm Valley 19 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Jacksonville (30.3322°, -81.6556°, elevation 16 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).