Luxembourg weather in December

In December, Luxembourg sees average daytime highs of 5°C and overnight lows near 1°C, with 85 mm of precipitation across 13.8 wet days and about 8 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 5°C through the month. The sky is clear or mostly clear about 11% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 12 min at the start of December to 8 hours by month's end. Set against the rest of the year, December is Luxembourg's 11th-clearest and 2nd-windiest month. For the whole year in context, see Luxembourg's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
85 mm
13.8 wet days
Daylight
7 h 54 min
8:33 AM – 4:30 PM
Cloud cover
79%
11th clearest
Wind
14 km/h
2nd windiest
Solar energy
0.67 kWh/m²
Travel score
0.1
out of 10

Luxembourg is capital and largest city of Luxembourg.

Air quality
Good
PM2.5 9.1 µg/m³ · 2019
Density
1,490/km²
people per km²
Founded
~963 CE

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 5°C through the month.

A typical December day in Luxembourg reaches about 5°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 -0°C and 10°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
162
262
362
461
561
651
751
851
951
1051
1151
1251
1351
1451
1551
1651
1751
1851
1951
2051
2151
2251
2351
2451
2550
2650
2750
2850
2940
3040
3140

How December really feels in Luxembourg

Once humidity and wind are folded in, December 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 December is cold — wind chill drags the overnight "feels like" below the raw low.

Luxembourg weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°68122.48.40.0
Feb / -0°5710.52.99.80.3
Mar10° / 6011.51.211.52.2
Apr14° / 5210.60.213.44.1
May18° / 6712.4015.15.4
Jun21° / 12°6210.50166.3
Jul24° / 14°5810.9015.66.8
Aug23° / 13°6210.4014.26.8
Sep19° / 10°609.4012.46.0
Oct14° / 6711.3010.53.8
Nov / 6812.70.88.91.3
Dec / 8513.8380.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 80%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31981
41981
52080
62080
72080
82179
92278
102278
112278
122278
132278
142278
152278
162179
172179
182080
192080
202080
212080
222080
232080
242080
251981
261882
271981
281981
291981
301981
312080

Chance of precipitation in December

Any precipitationSnow

Luxembourg gets around 85 mm of rain and snow over 13.8 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 44% and peaks near 47% on the wettest days, and about 3 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1417
2417
3417
4417
5427
6427
7427
8427
9427
10427
11428
12438
13438
14449
15449
16459
174510
184610
194611
204611
214611
224712
234712
244712
254712
264711
274611
284611
294610
304610
31459

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 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 December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 12 min at the start of December to 8 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 8:18 AM to 8:39 AM, and sunset from 4:32 PM to 4:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.28:184:32
28.28:194:32
38.28:214:31
48.28:224:31
58.18:234:31
68.18:244:30
78.18:254:30
88.18:264:30
98.08:274:30
108.08:284:30
118.08:294:30
128.08:304:29
138.08:314:30
148.08:324:30
158.08:334:30
167.98:334:30
177.98:344:30
187.98:354:30
197.98:354:31
207.98:364:31
217.98:364:31
227.98:374:32
237.98:374:32
247.98:384:33
257.98:384:34
267.98:394:34
277.98:394:35
287.98:394:36
298.08:394:36
308.08:394:37
318.08:394:38

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.67 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.67 kWh/m² to a high of 5.56 kWh/m² in June across the year — December's 0.67 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.8Dim
20.8Dim
30.8Dim
40.8Dim
50.7Dim
60.7Dim
70.7Dim
80.7Dim
90.7Dim
100.7Dim
110.7Dim
120.7Dim
130.7Dim
140.7Dim
150.7Dim
160.7Dim
170.7Dim
180.7Dim
190.7Dim
200.7Dim
210.6Dim
220.6Dim
230.6Dim
240.6Dim
250.6Dim
260.7Dim
270.7Dim
280.7Dim
290.7Dim
300.7Dim
310.7Dim
Planning a trip in December

Is December a good time to visit Luxembourg?

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

0.1
Sightseeing
11th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Luxembourg.

What to pack for Luxembourg in December

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

In December, Luxembourg sees daytime highs around 5°C and nights near 1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 14 days see rain.

a warm layera heavy coatrain gear

UV index in Luxembourg in December

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Luxembourg 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
Location & terrain

Where is Luxembourg?

Luxembourg sits at 49.6°N, 6.1°E, 259 m above sea level, in Luxembourg. The nearest listed city is Dudelange, 15 km away.

DudelangeEsch-sur-AlzetteArlon

Topography around Luxembourg

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

Within 3 km, the terrain around Luxembourg has only modest variations in elevation — a maximum elevation change of 124 m around an average of 301 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 304 m; within 80 km, large variations in elevation — a maximum elevation change of 718 m.

The land around Luxembourg is covered by artificial surfaces (46%) and trees (43%) within 3 km, trees (43%) and grassland (30%) within 16 km, and trees (49%), grassland (24%) and cropland (23%) within 80 km.

3 km
124 m
16 km
304 m
80 km
718 m
treesgrasslandcroplandartificial surfaces
December weather nearby: Dudelange 15 km · Esch-sur-Alzette 17 km · Arlon 24 km · Thionville 28 km · Yutz 29 km · Hayange 32 km · Konz 33 km · Trier 40 km

Luxembourg travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 94% of US
price level, 2025
GDP per capita
$147,252
2025
Happiness
7.1 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.5
per 100k, 2022
Road deaths
4.1
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 71%unaffiliated 27%Muslim 2%other 0%

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 Luxembourg (49.6098°, 6.1327°, elevation 259 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).