Wetzlar weather in January

In January, Wetzlar sees average daytime highs of 3°C and overnight lows near -1°C, with 60 mm of precipitation across 11.8 wet days and about 8.3 hours of daylight. It is the 12th-warmest and 7th-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 7 h 48 min at the start of January to 8 h 54 min by month's end. Set against the rest of the year, January is Wetzlar's 10th-clearest and 1st-windiest month. For the whole year in context, see Wetzlar's year-round climate.

Daytime high
12th warmest
Overnight low
-1°
1st coldest
Precipitation
60 mm
11.8 wet days
Daylight
8 h 12 min
8:28 AM – 4:42 PM
Cloud cover
77%
10th clearest
Wind
13 km/h
1st windiest
Solar energy
0.82 kWh/m²
Travel score
0.0
out of 10
Air quality
Good
PM10 18.1 µg/m³ · 2019

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 Wetzlar 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
74-1
84-1
94-1
104-1
114-1
124-1
134-1
144-1
153-1
163-1
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 Wetzlar

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.

Wetzlar 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 (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°6011.83.98.30.0
Feb / -1°499.83.79.70.1
Mar / 5511.51.811.51.7
Apr14° / 5010.30.413.53.9
May18° / 6411.3015.25.4
Jun21° / 12°6611.3016.16.1
Jul23° / 14°7212.7015.86.4
Aug23° / 13°6711.2014.36.6
Sep18° / 10°609.5012.45.8
Oct13° / 5811.30.110.43.4
Nov / 5911.818.70.9
Dec / 7213.24.17.80.0

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 9% of January, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11981
21981
31981
41981
51981
62080
72179
82278
92278
102278
112278
122278
132377
142377
152377
162377
172377
182377
192377
202377
212377
222278
232278
242179
252278
262278
272278
282278
292278
302278
312377

Chance of precipitation in January

Any precipitationSnow

Wetzlar gets around 60 mm of rain and snow over 11.8 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 38% and peaks near 44% on the wettest days, and about 4 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
14412
24412
34311
44311
54210
64210
74110
84010
94010
103910
113810
123710
133711
143611
153612
163512
173513
183513
193514
203514
213515
223615
233616
243616
253716
263717
273717
283717
293617
303616
313616

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 13 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 7 h 48 min at the start of January to 8 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over January. Sunrise moves from 8:34 AM to 8:13 AM, and sunset from 4:24 PM to 5:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.88:344:24
27.98:344:25
37.98:344:26
47.98:344:27
57.98:344:28
67.98:334:29
78.08:334:30
88.08:334:32
98.08:324:33
108.08:324:34
118.18:314:35
128.18:314:37
138.18:304:38
148.28:304:39
158.28:294:41
168.28:284:42
178.38:284:44
188.38:274:45
198.38:264:46
208.48:254:48
218.48:244:49
228.58:234:51
238.58:224:53
248.58:214:54
258.68:204:56
268.68:194:57
278.78:184:59
288.78:175:01
298.88:165:02
308.88:145:04
318.98:135:06

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.82 kWh/m².

For context, solar energy here swings from a low near 0.61 kWh/m² to a high of 5.48 kWh/m² in June across the year — January's 0.82 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.6Dim
20.6Dim
30.6Dim
40.7Dim
50.7Dim
60.7Dim
70.7Dim
80.7Dim
90.7Dim
100.7Dim
110.7Dim
120.8Dim
130.8Dim
140.8Dim
150.8Dim
160.8Dim
170.8Dim
180.8Dim
190.9Dim
200.9Dim
210.9Dim
220.9Dim
230.9Dim
241.0Dim
251.0Dim
261.0Dim
271.0Dim
281.1Dim
291.1Dim
301.1Dim
311.1Dim
Planning a trip in January

Is January a good time to visit Wetzlar?

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 Wetzlar.

What to pack for Wetzlar in January

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

In January, Wetzlar sees daytime highs around 3°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

UV index in Wetzlar 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 Wetzlar peaks around July 14 at about 7 (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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 14UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Wetzlar?

Wetzlar sits at 50.6°N, 8.5°E, 169 m above sea level, in Germany. The nearest listed city is Gießen, 12 km away.

Topography around Wetzlar

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

Within 3 km, the terrain around Wetzlar has only modest variations in elevation — a maximum elevation change of 163 m around an average of 194 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 371 m; within 80 km, large variations in elevation — a maximum elevation change of 850 m.

The land around Wetzlar is covered by trees (42%) and artificial surfaces (27%) within 3 km, trees (55%) and grassland (20%) within 16 km, and trees (56%) and grassland (20%) within 80 km.

3 km
163 m
16 km
371 m
80 km
850 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Gießen 12 km · Butzbach 18 km · Herborn 20 km · Dillenburg 25 km · Neu-Anspach 27 km · Bad Nauheim 27 km · Haiger 29 km · Friedberg 31 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 Wetzlar (50.5611°, 8.5049°, elevation 169 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).