St. Johns weather in January

In January, St. Johns sees average daytime highs of 65°F and overnight lows near 49°F, with 2.5 in of rain across 7.7 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 36% 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 St. Johns's 7th-clearest and 2nd-windiest month. For the whole year in context, see St. Johns's year-round climate.

Daytime high
65°
12th warmest
Overnight low
49°
1st coldest
Rainfall
2.5 in
7.7 wet days
Daylight
10 h 18 min
7:28 AM – 5:43 PM
Cloud cover
55%
7th clearest
Wind
8 mph
2nd windiest
Solar energy
3.14 kWh/m²
Travel score
6.4
out of 10

St. Johns is unincorporated community in St. Johns County, Florida, United States.

Founded
2005

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 St. Johns reaches about 65°F in the afternoon and slips back to 49°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 75°F. Set against its neighbours, January runs about 2°F cooler than December and about 3°F cooler than February.

30°40°50°60°70°80°151015202531
Avg high (°F)Avg low (°F)
16551
26551
36551
46550
56550
66550
76550
86550
96550
106550
116549
126549
136549
146549
156549
166549
176549
186549
196549
206549
216549
226549
236549
246549
256549
266549
276549
286549
296549
306549
316550

How January really feels in St. Johns

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.

St. Johns 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° / 49°2.57.710.36.4
Feb67° / 52°2.56.910.96.6
Mar72° / 56°2.87.311.87.2
Apr77° / 62°2.16.712.77.5
May83° / 69°2.58.713.56.3
Jun86° / 74°5.017.613.94.0
Jul88° / 76°4.820.113.73.4
Aug87° / 76°5.721.213.13.4
Sep84° / 74°5.517.212.24.5
Oct79° / 67°3.29.811.36.8
Nov72° / 58°1.76.210.57.4
Dec67° / 53°2.26.710.16.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% 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
24555
34555
44654
54654
64654
74654
84753
94753
104753
114852
124951
134951
145149
155149
165149
175248
185248
195248
205347
215248
225347
235248
245248
255149
265149
275050
284951
294951
304951
314852

Chance of precipitation in January

Any precipitation

St. Johns gets around 2.5 in of rain over 7.7 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 24% and peaks near 28% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
120
220
320
420
520
621
721
822
922
1022
1123
1223
1323
1424
1524
1624
1725
1825
1925
2026
2126
2226
2327
2427
2527
2627
2728
2828
2928
3028
3128

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 67% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15920138
25920138
35920138
45920138
56020137
66020137
76020137
86219136
96219136
106319135
116518125
126618124
136618124
146817123
156817123
166917122
176917122
186917122
197017112
207117111
217117111
227117111
237117111
247117111
257117111
267117111
277117111
287017121
297017121
307017121
317017121

Wind in January

Winds average 8 mph in January.

Across January, 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 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 7:27 AM to 7:23 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)
110.17:275:32
210.17:275:33
310.17:275:33
410.17:275:34
510.17:275:35
610.17:285:36
710.17:285:36
810.27:285:37
910.27:285:38
1010.27:285:39
1110.27:285:39
1210.27:285:40
1310.27:285:41
1410.27:285:42
1510.27:285:42
1610.37:285:43
1710.37:285:44
1810.37:275:45
1910.37:275:46
2010.37:275:47
2110.37:275:47
2210.47:275:48
2310.47:265:49
2410.47:265:50
2510.47:265:51
2610.47:255:52
2710.57:255:52
2810.57:255:53
2910.57:245:54
3010.57:245:55
3110.57:235:56

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 3.14 kWh/m².

For context, solar energy here swings from a low near 2.83 kWh/m² to a high of 6.44 kWh/m² in May across the year — January's 3.14 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.9Moderate
42.9Moderate
53.0Moderate
63.0Moderate
73.0Moderate
83.0Moderate
93.0Moderate
103.0Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.2Moderate
173.2Moderate
183.2Moderate
193.2Moderate
203.2Moderate
213.3Moderate
223.3Moderate
233.3Moderate
243.3Moderate
253.3Moderate
263.3Moderate
273.3Moderate
283.3Moderate
293.4Moderate
303.4Moderate
313.4Moderate
Planning a trip in January

Hazard calendar for St. Johns

In seasonPeak

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

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

St. Johns'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 January a good time to visit St. Johns?

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

6.4
Sightseeing
7th-best month of the year
2.3
Beach & pool
12th-best month of the year

January is a reasonable time to visit St. Johns for sightseeing.

What to pack for St. Johns in January

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

In January, St. Johns sees daytime highs around 65°F and nights near 49°F. Little to plan around — just the basics. About 8 days see rain.

Sea temperature near St. Johns 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 23 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 St. Johns 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 St. Johns 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
May9Very high
Jun11Extreme
Jul10Extreme
Aug10Very high
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in St. Johns 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 St. Johns 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 St. Johns?

St. Johns sits at 30.1°N, 81.5°W, 33 ft above sea level, in United States. The nearest listed city is Fruit Cove, 6.2 mi away.

Topography around St. Johns

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

Within 2 miles, the terrain around St. Johns has only modest variations in elevation — a maximum elevation change of 118 ft around an average of 39 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 144 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 308 ft.

The land around St. Johns is covered by trees (65%) within 2 miles, trees (62%) within 10 miles, and trees (59%) and water (28%) within 50 miles.

2 miles
118 ft
10 miles
144 ft
50 miles
308 ft
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Fruit Cove 6.2 mi · Fleming Island 11 mi · Palm Valley 12 mi · Lakeside 14 mi · Ponte Vedra Beach 15 mi · Jacksonville Beach 17 mi · Oakleaf Plantation 18 mi · Jacksonville 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 St. Johns (30.0815°, -81.5477°, elevation 33 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).