Jacksonville weather in January

In January, Jacksonville sees average daytime highs of 65°F and overnight lows near 45°F, with 2.6 in of rain across 7.3 wet days and about 10.3 hours of daylight. It is the 12th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 65°F through the month. The sky is clear or mostly clear about 35% of the time in January, and the air most often feels dry.

Daylight stretches from about 10 h 06 min at the start of January to 10 h 30 min by month's end. Set against the rest of the year, January is Jacksonville's 7th-clearest and 3rd-windiest month. For the whole year in context, see Jacksonville's year-round climate.

Daytime high
65°
12th warmest
Overnight low
45°
1st coldest
Rainfall
2.6 in
7.3 wet days
Daylight
10 h 12 min
7:29 AM – 5:43 PM
Cloud cover
55%
7th clearest
Wind
7 mph
3rd windiest
Solar energy
3.08 kWh/m²
Travel score
6.5
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 65°F through the month.

A typical January day in Jacksonville reaches about 65°F in the afternoon and slips back to 45°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 77°F. Set against its neighbours, January runs about 2°F cooler than December and about 3°F cooler than February.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16646
26646
36646
46646
56546
66546
76546
86545
96545
106545
116545
126545
136545
146545
156544
166544
176544
186544
196544
206544
216544
226544
236544
246544
256544
266545
276545
286545
296545
306645
316645

How January really feels in Jacksonville

Once humidity and wind are folded in, January 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

January 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 January compares with the rest of the year at a glance. January is the 12th-warmest and 8th-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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14555
24456
34555
44555
54555
64555
74654
84852
94852
104852
115050
125149
135149
145248
155248
165248
175248
185248
195248
205248
215248
225149
235149
245050
255050
264951
274852
284852
294852
304753
314753

Chance of precipitation in January

Any precipitation

Jacksonville gets around 2.6 in of rain over 7.3 wet days in January. 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 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
121
220
320
420
520
621
721
821
921
1021
1122
1222
1322
1422
1522
1623
1723
1823
1923
2024
2124
2224
2325
2425
2525
2626
2726
2826
2926
3026
3126

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 73% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16716116
26716116
36716116
46617116
56717115
66618115
76618115
86917104
96917104
106917104
117116103
127215103
13731593
14751492
15751492
16751492
17761491
18771481
19781381
20781381
21781381
22781381
23771481
24771481
25771481
26771481
27761581
28761581
29761581
30761581
31761581

Wind in January

Winds average 7 mph in January.

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

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 06 min at the start of January to 10 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over January. Sunrise moves from 7:28 AM to 7:24 AM, and sunset from 5:32 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.17:285:32
210.17:285:33
310.17:285:33
410.17:285:34
510.17:285:35
610.17:295:35
710.17:295:36
810.17:295:37
910.17:295:38
1010.27:295:38
1110.27:295:39
1210.27:295:40
1310.27:295:41
1410.27:295:42
1510.27:295:42
1610.27:295:43
1710.37:295:44
1810.37:285:45
1910.37:285:46
2010.37:285:46
2110.37:285:47
2210.37:285:48
2310.47:275:49
2410.47:275:50
2510.47:275:51
2610.47:265:52
2710.47:265:52
2810.57:255:53
2910.57:255:54
3010.57:255:55
3110.57:245:56

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.08 kWh/m².

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 — January's 3.08 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.9Moderate
42.9Moderate
52.9Moderate
62.9Moderate
72.9Moderate
83.0Moderate
93.0Moderate
103.0Moderate
113.0Moderate
123.0Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.2Moderate
193.2Moderate
203.2Moderate
213.2Moderate
223.2Moderate
233.2Moderate
243.2Moderate
253.2Moderate
263.3Moderate
273.3Moderate
283.3Moderate
293.3Moderate
303.3Moderate
313.3Moderate
Planning a trip in January

Hazard calendar for Jacksonville

In seasonPeak

In January, Jacksonville sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

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 January a good time to visit Jacksonville?

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

6.5
Sightseeing
7th-best month of the year
2.5
Beach & pool
12th-best month of the year

January is a reasonable time to visit Jacksonville for sightseeing.

What to pack for Jacksonville in January

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

In January, Jacksonville sees daytime highs around 65°F and nights near 45°F. Worth packing: a warm layer. About 7 days see rain.

a warm layer

Sea temperature near Jacksonville in January

The nearest coast averages about 62°F in January — 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 January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 4 — 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 January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January 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
January 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).