Jacksonville Beach weather in December

In December, Jacksonville Beach sees average daytime highs of 66°F and overnight lows near 52°F, with 2.3 in of rain across 7 wet days and about 10.1 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 68°F in the first days to 65°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 Beach's 8th-clearest and 6th-windiest month. For the whole year in context, see Jacksonville Beach's year-round climate.

Daytime high
66°
10th warmest
Overnight low
52°
3rd coldest
Rainfall
2.3 in
7 wet days
Daylight
10 h 06 min
7:20 AM – 5:23 PM
Cloud cover
56%
8th clearest
Wind
8 mph
6th windiest
Solar energy
2.8 kWh/m²
Travel score
6.6
out of 10

Jacksonville Beach is city in Duval County, Florida, United States.

Density
405/km²
people per km²
Founded
1831

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 68°F in the first days to 65°F by the end.

A typical December day in Jacksonville Beach reaches about 66°F in the afternoon and slips back to 52°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 76°F. Set against its neighbours, December runs about 5°F cooler than November and about 2°F warmer than January.

30°40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
16954
26954
36854
46854
56853
66853
76853
86753
96753
106753
116752
126752
136752
146652
156652
166651
176651
186651
196651
206651
216551
226551
236551
246551
256550
266550
276550
286550
296550
306550
316550

How December really feels in Jacksonville Beach

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 Beach weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan64° / 49°2.57.310.36.3
Feb66° / 51°2.56.810.96.6
Mar71° / 55°2.97.311.87.2
Apr76° / 61°2.26.712.77.5
May82° / 68°2.48.113.56.5
Jun86° / 74°5.016.613.94.2
Jul88° / 76°4.718.513.83.6
Aug87° / 76°5.720.513.13.6
Sep84° / 74°5.516.312.24.7
Oct78° / 67°3.29.611.36.9
Nov71° / 57°1.86.410.57.3
Dec66° / 52°2.3710.16.6

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 14% of December, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35545
45446
55347
65347
75248
85149
95050
105050
114951
124951
134951
144852
154852
164852
174852
184753
194753
204753
214753
224753
234654
244654
254654
264456
274456
284456
294456
304456
314456

Chance of precipitation in December

Any precipitation

Jacksonville Beach gets around 2.3 in of rain over 7 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 23% and peaks near 25% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
119
219
319
420
520
621
721
822
922
1023
1123
1223
1324
1424
1524
1625
1725
1825
1925
2025
2125
2224
2324
2424
2524
2623
2723
2823
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 56% of days. Sticky, muggy-or-worse air turns up on roughly 8% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
149192111
249192110
349202110
450202010
550202010
65021209
75021209
85121199
95121199
105220199
115420188
125420188
135420188
145519188
155719177
165719177
175818177
185818177
196017167
206017167
216017167
226117157
236117157
246117157
256117157
266018157
276118147
286118147
296118147
306119137
316119137

Wind in December

Winds average 8 mph in December.

Across December, daily wind ranges from about 8 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

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 7:10 AM to 7:27 AM, and sunset from 5:21 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.27:105:21
210.27:115:21
310.27:115:21
410.17:125:21
510.17:135:21
610.17:135:21
710.17:145:21
810.17:155:21
910.17:165:22
1010.17:165:22
1110.17:175:22
1210.17:185:22
1310.17:185:22
1410.17:195:23
1510.17:195:23
1610.17:205:23
1710.17:215:24
1810.07:215:24
1910.07:225:25
2010.07:225:25
2110.07:235:25
2210.07:235:26
2310.07:245:26
2410.07:245:27
2510.07:255:27
2610.07:255:28
2710.17:255:28
2810.17:265:29
2910.17:265:30
3010.17:265:30
3110.17:275:31

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.8 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.8 kWh/m² to a high of 6.46 kWh/m² in May across the year — December's 2.8 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
32.9Moderate
42.9Moderate
52.9Moderate
62.9Moderate
72.9Moderate
82.8Moderate
92.8Moderate
102.8Moderate
112.8Moderate
122.8Moderate
132.8Moderate
142.8Moderate
152.8Moderate
162.8Moderate
172.8Moderate
182.8Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.8Moderate
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 Beach

In seasonPeak

None of Jacksonville Beach'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 Beach sits in the Atlantic hurricane belt; the season peaks August–October.

Jacksonville Beach's rainy season runs June–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 Beach?

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

6.6
Sightseeing
5th-best month of the year
2.9
Beach & pool
11th-best month of the year

December is a reasonable time to visit Jacksonville Beach for sightseeing.

What to pack for Jacksonville Beach in December

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

In December, Jacksonville Beach sees daytime highs around 66°F and nights near 52°F. Little to plan around — just the basics. About 7 days see rain.

Sea temperature near Jacksonville Beach 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 offshore 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 Beach 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 Beach peaks around June 21 at about 11 (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 21UV 11Dec 19UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7Very high
Apr7High
May8Very high
Jun11Extreme
Jul10Extreme
Aug10Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Jacksonville Beach 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 Beach 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 Beach?

Jacksonville Beach sits at 30.3°N, 81.4°W, 10 ft above sea level, in United States. The nearest listed city is Ponte Vedra Beach, 3.7 mi away.

Topography around Jacksonville Beach

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

Within 2 miles, the terrain around Jacksonville Beach has only modest variations in elevation — a maximum elevation change of 59 ft around an average of 10 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 128 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 308 ft.

The land around Jacksonville Beach is covered by water (47%) and artificial surfaces (21%) within 2 miles, water (52%) and trees (27%) within 10 miles, and trees (52%) and water (35%) within 50 miles.

2 miles
59 ft
10 miles
128 ft
50 miles
308 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Ponte Vedra Beach 3.7 mi · Palm Valley 8.1 mi · Jacksonville 16 mi · St. Johns 17 mi · Fruit Cove 19 mi · Fleming Island 24 mi · Lakeside 25 mi · Oakleaf Plantation 28 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 Beach (30.2947°, -81.3931°, elevation 10 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).