Jacksonville weather in January

In January, Jacksonville sees average daytime highs of 55°F and overnight lows near 37°F, with 3.6 in of precipitation across 9 wet days and about 9.9 hours of daylight. It is the 12th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 55°F through the month. The sky is clear or mostly clear about 40% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 42 min at the start of January to 10 h 18 min by month's end. Set against the rest of the year, January is Jacksonville's 4th-clearest and 4th-windiest month. For the whole year in context, see Jacksonville's year-round climate.

Daytime high
55°
12th warmest
Overnight low
37°
1st coldest
Precipitation
3.6 in
9 wet days
Daylight
9 h 54 min
7:22 AM – 5:16 PM
Cloud cover
54%
4th clearest
Wind
7 mph
4th windiest
Solar energy
2.67 kWh/m²
Travel score
3.7
out of 10

Jacksonville is city in Onslow County, North Carolina, United States.

Density
513/km²
people per km²
Founded
1757

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 55°F through the month.

A typical January day in Jacksonville reaches about 55°F in the afternoon and slips back to 37°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 40°F and 69°F. Set against its neighbours, January runs about 3°F cooler than December and about 3°F cooler than February.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
15638
25638
35638
45638
55638
65638
75638
85638
95638
105638
115537
125537
135537
145537
155537
165537
175536
185536
195536
205436
215436
225436
235436
245436
255436
265536
275536
285536
295536
305536
315536

How January really feels in Jacksonville

Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 21 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
21
wind chill below the day's low

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Jacksonville weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan55° / 37°3.690.69.93.7
Feb58° / 39°3.38.90.510.74.4
Mar64° / 44°3.69.40.111.76.0
Apr73° / 53°3.38.8012.87.0
May79° / 61°4.111013.86.5
Jun85° / 69°5.615.5014.34.5
Jul87° / 73°6.719.8014.13.6
Aug86° / 72°6.817.3013.34.1
Sep82° / 66°6.513.3012.25.7
Oct74° / 56°4.08.5011.17.1
Nov65° / 45°3.67.9010.26.4
Dec58° / 40°3.69.40.19.74.5

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
35050
45050
55050
64951
74951
85050
94951
105050
115050
125149
135050
145050
155149
165149
175149
185149
195149
205248
215248
225149
235149
245248
255248
265149
275149
285248
295149
305149
315149

Chance of precipitation in January

Any precipitationSnow

Jacksonville gets around 3.6 in of rain and snow over 9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 29% and peaks near 30% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1281
2281
3281
4271
5271
6271
7271
8281
9281
10282
11282
12282
13292
14292
15292
16302
17302
18302
19302
20302
21302
22302
23302
24302
25302
26292
27292
28291
29291
30291
31291

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 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
186752
287751
387751
488741
588741
688741
787841
887841
987841
1087841
1188831
1288831
1389731
1489731
1590721
1690721
1791621
1891621
1992620
2092620
2193520
2293520
2394510
2494510
2594510
2695410
2794420
2893520
2993520
3093520
3193520

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 9 h 42 min at the start of January to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:22 AM to 7:15 AM, and sunset from 5:04 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.77:225:04
29.77:225:05
39.77:225:05
49.77:225:06
59.77:225:07
69.87:225:08
79.87:235:09
89.87:235:09
99.87:235:10
109.87:235:11
119.87:225:12
129.87:225:13
139.97:225:14
149.97:225:14
159.97:225:15
169.97:225:16
179.97:225:17
189.97:215:18
1910.07:215:19
2010.07:215:20
2110.07:205:21
2210.07:205:22
2310.17:205:23
2410.17:195:24
2510.17:195:25
2610.17:185:26
2710.17:185:27
2810.27:175:28
2910.27:175:29
3010.27:165:30
3110.37:155:31

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.67 kWh/m².

For context, solar energy here swings from a low near 2.38 kWh/m² to a high of 6.04 kWh/m² in May across the year — January's 2.67 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.4Moderate
32.4Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.5Moderate
92.5Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.8Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.9Moderate
282.9Moderate
293.0Moderate
303.0Moderate
313.0Moderate
Planning a trip in January

Hazard calendar for Jacksonville

In seasonPeak

None of Jacksonville's seasonal hazards are active in January. 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.

Atlantic hurricane
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).

3.7
Sightseeing
11th-best month of the year
0.0
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Jacksonville.

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 55°F and nights near 37°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

Sea temperature near Jacksonville in January

The nearest coast averages about 60°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 19 mi away) is warmest in August at about 82°F and coldest in February near 58°F.

It's comfortable for a long swim from May 6 to Nov 13 — about 6.3 months when the water holds above 68°F.

60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan60Cool
Feb58Bracing
Mar60Cool
Apr64Cool
May70Refreshing
Jun77Warm
Jul81Warm
Aug82Warm
Sep80Warm
Oct74Refreshing
Nov67Cool
Dec63Cool

UV index in Jacksonville in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJul 14UV 9Dec 19UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr7Very high
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7Very high
Oct5Moderate
Nov4Moderate
Dec2Moderate

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 March — around 21 µg/m³ PM2.5 (moderate), about 3.3× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMar 1720 µg/m³Dec 136 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb13Moderate
Mar21Moderate
Apr14Moderate
May13Moderate
Jun17Moderate
Jul17Moderate
Aug14Moderate
Sep10Good
Oct8Good
Nov7Good
Dec6Good
Location & terrain

Where is Jacksonville?

Jacksonville sits at 34.8°N, 77.4°W, 13 ft above sea level, in United States. The nearest listed city is Havelock, 31 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 85 ft around an average of 26 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 246 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 289 ft.

The land around Jacksonville is covered by trees (55%) within 2 miles, trees (69%) within 10 miles, and trees (56%) and water (25%) within 50 miles.

2 miles
85 ft
10 miles
246 ft
50 miles
289 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Havelock 31 mi · New Bern 33 mi · Kinston 36 mi · Wilmington 47 mi · Leland 49 mi · Goldsboro 54 mi · Greenville 60 mi · Wilson 72 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 (34.754°, -77.4302°, elevation 13 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).