Trier weather in December

In December, Trier sees average daytime highs of 4°C and overnight lows near 0°C, with 99 mm of precipitation across 14.4 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 4°C through the month. The sky is clear or mostly clear about 10% 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 Trier's 12th-clearest and 2nd-windiest month. For the whole year in context, see Trier's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
99 mm
14.4 wet days
Daylight
7 h 54 min
8:32 AM – 4:27 PM
Cloud cover
80%
12th clearest
Wind
14 km/h
2nd windiest
Solar energy
0.66 kWh/m²
Travel score
0.0
out of 10
Air quality
Moderate
PM2.5 11.1 µg/m³ · 2019

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 4°C through the month.

A typical December day in Trier reaches about 4°C in the afternoon and slips back to 0°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -1°C and 9°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
151
251
351
451
551
651
751
851
941
1041
1141
1241
1340
1440
1540
1640
1740
1840
1940
2040
2140
2240
2340
2440
2540
2640
2740
2840
2940
3040
3140

How December really feels in Trier

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.

Trier 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 / -1°8213.13.78.40.0
Feb / -1°6711.23.99.80.1
Mar / 7012.7211.51.7
Apr13° / 5711.60.413.53.6
May17° / 7312.9015.15.1
Jun20° / 11°72120165.9
Jul23° / 13°7112.3015.76.4
Aug22° / 13°7011.2014.26.5
Sep18° / 10°6710.4012.45.6
Oct13° / 7311.9010.53.4
Nov / 77131.38.81.0
Dec / 9914.44.180.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11882
21882
31981
41981
51981
61981
72179
82179
92179
102179
112080
122080
132080
142080
152080
161981
171981
181981
191981
201882
211882
221882
231783
241783
251783
261882
271882
281783
291783
301783
311783

Chance of precipitation in December

Any precipitationSnow

Trier gets around 99 mm of rain and snow over 14.4 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 46% and peaks near 49% on the wettest days, and about 4 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14210
24210
34210
44310
54310
64310
74310
84310
94411
104411
114411
124512
134512
144612
154713
164713
174813
184814
194914
204914
214915
224915
234915
244915
254915
264915
274914
284814
294814
304813
314713

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 14 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
413light breeze
513light breeze
613light breeze
713light breeze
813light 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
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light 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 8:17 AM to 8:38 AM, and sunset from 4:30 PM to 4:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.28:174:30
28.28:184:29
38.28:194:29
48.18:204:28
58.18:224:28
68.18:234:28
78.18:244:27
88.08:254:27
98.08:264:27
108.08:274:27
118.08:284:27
128.08:294:27
138.08:304:27
147.98:304:27
157.98:314:27
167.98:324:27
177.98:334:27
187.98:334:28
197.98:344:28
207.98:354:28
217.98:354:29
227.98:364:29
237.98:364:30
247.98:374:30
257.98:374:31
267.98:374:31
277.98:374:32
287.98:384:33
297.98:384:34
307.98:384:34
318.08:384:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.66 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.66 kWh/m² to a high of 5.49 kWh/m² in June across the year — December's 0.66 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.8Dim
20.8Dim
30.8Dim
40.7Dim
50.7Dim
60.7Dim
70.7Dim
80.7Dim
90.7Dim
100.7Dim
110.7Dim
120.7Dim
130.7Dim
140.7Dim
150.7Dim
160.7Dim
170.6Dim
180.6Dim
190.6Dim
200.6Dim
210.6Dim
220.6Dim
230.6Dim
240.6Dim
250.6Dim
260.6Dim
270.6Dim
280.6Dim
290.6Dim
300.7Dim
310.7Dim
Planning a trip in December

Is December a good time to visit Trier?

Our two travel scores rate December 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

December is a weaker month for outdoor sightseeing in Trier.

What to pack for Trier in December

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

In December, Trier sees daytime highs around 4°C and nights near 0°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 14 days see rain.

a warm layerrain geara heavy coat

UV index in Trier 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 Trier 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
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Trier?

Trier sits at 49.8°N, 6.6°E, 141 m above sea level, in Germany. The nearest listed city is Konz, 8.0 km away.

Topography around Trier

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

Within 3 km, the terrain around Trier has significant variations in elevation — a maximum elevation change of 269 m around an average of 196 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 601 m; within 80 km, large variations in elevation — a maximum elevation change of 747 m.

The land around Trier is covered by trees (55%) and artificial surfaces (29%) within 3 km, trees (55%) and grassland (21%) within 16 km, and trees (52%) and grassland (24%) within 80 km.

3 km
269 m
16 km
601 m
80 km
747 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Konz 8.0 km · Losheim 28 km · Wadern 30 km · Wittlich 31 km · Merzig 35 km · Schmelz 39 km · Beckingen 40 km · Luxembourg 40 km

Germany travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 80% of US
price level, 2025
GDP per capita
$60,496
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.9
per 100k, 2023
Road deaths
3.8
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 615
Religion
none 44%Roman Catholic 25%Protestant 23%other 5%

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 Trier (49.7557°, 6.6394°, elevation 141 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).