Arlon weather in January

In January, Arlon sees average daytime highs of 3°C and overnight lows near -1°C, with 82 mm of precipitation across 12.7 wet days and about 8.4 hours of daylight. It is the 12th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 3°C through the month. The sky is clear or mostly clear about 13% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 hours at the start of January to 9 hours by month's end. Set against the rest of the year, January is Arlon's 10th-clearest and 1st-windiest month. For the whole year in context, see Arlon's year-round climate.

Daytime high
12th warmest
Overnight low
-1°
2nd coldest
Precipitation
82 mm
12.7 wet days
Daylight
8 h 24 min
8:35 AM – 4:57 PM
Cloud cover
78%
10th clearest
Wind
16 km/h
1st windiest
Solar energy
0.86 kWh/m²
Travel score
0.0
out of 10

Arlon is town in Arlon municipality, Belgium.

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 3°C through the month.

A typical January day in Arlon reaches about 3°C in the afternoon and slips back to -1°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -2°C and 9°C. Set against its neighbours, January runs on par with December and about 1°C cooler than February.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
140
240
340
440
540
640
740
840
940
1040
1140
1240
1340
1440
1540
1630
173-1
183-1
193-1
203-1
213-1
223-1
233-1
243-1
253-1
263-1
273-1
283-1
293-1
303-1
313-1

How January really feels in Arlon

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
wind chill below the day's low

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

Arlon weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°8212.748.40.0
Feb / -1°6811.14.69.80.1
Mar / 7112.62.211.51.6
Apr13° / 6312.10.613.43.3
May17° / 7613.9015.14.7
Jun20° / 11°7612.20165.7
Jul22° / 13°7612.9015.76.2
Aug22° / 13°7712.4014.26.2
Sep18° / 10°6910.5012.45.4
Oct13° / 7411.70.110.53.3
Nov / 7512.81.58.80.9
Dec / 98144.280.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 8% of January, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21783
31783
41783
51783
61882
71882
81882
91981
101981
111981
122179
132179
142179
152179
162278
172278
182278
192179
202278
212278
222278
232278
242278
252278
262377
272377
282377
292377
302476
312476

Chance of precipitation in January

Any precipitationSnow

Arlon gets around 82 mm of rain and snow over 12.7 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 41% and peaks near 45% on the wettest days, and about 4 days bring snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14513
24512
34512
44511
54511
64511
74411
84411
94311
104311
114211
124211
134111
144112
154012
164012
173913
183913
193914
203914
213815
223815
233815
243816
253816
263816
273816
283716
293716
303717
313717

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 16 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 16 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 hours at the start of January to 9 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over January. Sunrise moves from 8:41 AM to 8:21 AM, and sunset from 4:39 PM to 5:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.08:414:39
28.08:414:40
38.08:404:41
48.08:404:42
58.08:404:43
68.18:404:44
78.18:404:45
88.18:394:46
98.18:394:48
108.28:394:49
118.28:384:50
128.28:384:51
138.38:374:53
148.38:374:54
158.38:364:55
168.48:354:57
178.48:354:58
188.48:344:59
198.58:335:01
208.58:325:02
218.58:325:04
228.68:315:05
238.68:305:07
248.78:295:08
258.78:285:10
268.78:275:11
278.88:255:13
288.88:245:15
298.98:235:16
308.98:225:18
319.08:215:19

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.86 kWh/m².

For context, solar energy here swings from a low near 0.66 kWh/m² to a high of 5.46 kWh/m² in June across the year — January's 0.86 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.7Dim
20.7Dim
30.7Dim
40.7Dim
50.7Dim
60.7Dim
70.7Dim
80.7Dim
90.7Dim
100.8Dim
110.8Dim
120.8Dim
130.8Dim
140.8Dim
150.8Dim
160.9Dim
170.9Dim
180.9Dim
190.9Dim
200.9Dim
210.9Dim
221.0Dim
231.0Dim
241.0Dim
251.0Dim
261.1Dim
271.1Dim
281.1Dim
291.1Dim
301.2Dim
311.2Dim
Planning a trip in January

Is January a good time to visit Arlon?

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

0.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
8th-best month of the year

January is a weaker month for outdoor sightseeing in Arlon.

What to pack for Arlon in January

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

In January, Arlon sees daytime highs around 3°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 13 days see rain.

a warm layera heavy coatrain gear

UV index in Arlon in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arlon peaks around July 16 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr5Moderate
May6High
Jun7High
Jul7Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Arlon 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 Arlon is worst in April — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1516 µg/m³Dec 109 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar15Moderate
Apr16Moderate
May14Moderate
Jun14Moderate
Jul12Moderate
Aug12Moderate
Sep12Moderate
Oct10Good
Nov9Good
Dec9Good
Location & terrain

Where is Arlon?

Arlon sits at 49.7°N, 5.8°E, 421 m above sea level, in Belgium. The nearest listed city is Esch-sur-Alzette, 24 km away.

Esch-sur-AlzetteLuxembourgDudelangeThionvilleYutzKonz

Topography around Arlon

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arlon.

Within 3 km, the terrain around Arlon has only modest variations in elevation — a maximum elevation change of 176 m around an average of 382 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 288 m; within 80 km, large variations in elevation — a maximum elevation change of 613 m.

The land around Arlon is covered by trees (40%) and grassland (30%) within 3 km, trees (46%) and grassland (34%) within 16 km, and trees (49%), grassland (25%) and cropland (22%) within 80 km.

3 km
176 m
16 km
288 m
80 km
613 m
treesgrasslandcroplandartificial surfaces
January weather nearby: Esch-sur-Alzette 24 km · Luxembourg 24 km · Dudelange 30 km · Hayange 43 km · Thionville 44 km · Yutz 45 km · Konz 55 km · Trier 60 km

Belgium travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 81% of US
price level, 2025
GDP per capita
$60,750
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
5.8
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 608
Religion
Roman Catholic 57%nonbeliever/agnostic 20%atheist 9%Muslim 7%

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 Arlon (49.6833°, 5.8167°, elevation 421 m), 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. 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).