Slagelse weather in January

In January, Slagelse sees average daytime highs of 3°C and overnight lows near 1°C, with 57 mm of precipitation across 12.3 wet days and about 7.5 hours of daylight. It is the 11th-warmest and 8th-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 12% of the time in January, and the air most often feels dry.

Daylight stretches from about 6 h 54 min at the start of January to 8 h 12 min by month's end. Set against the rest of the year, January is Slagelse's 10th-clearest and 1st-windiest month. For the whole year in context, see Slagelse's year-round climate.

Daytime high
11th warmest
Overnight low
2nd coldest
Precipitation
57 mm
12.3 wet days
Daylight
7 h 24 min
8:42 AM – 4:06 PM
Cloud cover
76%
10th clearest
Wind
24 km/h
1st windiest
Solar energy
0.56 kWh/m²
Travel score
0.0
out of 10

Slagelse is town in Denmark.

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 Slagelse reaches about 3°C in the afternoon and slips back to 1°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between -1°C and 7°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

-5°10°151015202531
Avg high (°C)Avg low (°C)
141
241
341
441
541
641
741
841
941
1041
1141
1241
1341
1431
1531
1631
1731
1831
1931
2031
2130
2230
2330
2430
2530
2630
2730
2830
2930
3030
3130

How January really feels in Slagelse

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.

Slagelse weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 5712.33.87.50.0
Feb / 449.73.69.20.0
Mar / 4510.22.211.40.3
Apr10° / 3790.413.82.2
May14° / 5210.2015.94.2
Jun18° / 12°6510.8017.15.5
Jul20° / 15°6711.1016.66.2
Aug20° / 15°6911.5014.86.1
Sep16° / 12°6010.4012.55.0
Oct12° / 6712.2010.12.9
Nov / 5812.30.88.11.0
Dec / 5911.92.36.90.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32377
42377
52377
62377
72476
82476
92377
102278
112377
122377
132377
142377
152278
162278
172377
182377
192377
202377
212377
222377
232377
242278
252377
262377
272476
282476
292476
302476
312476

Chance of precipitation in January

Any precipitationSnow

Slagelse gets around 57 mm of rain and snow over 12.3 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 39% and peaks near 42% 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 (%)
14110
24110
34110
44210
54210
64210
74210
84210
94210
104210
114110
124111
134111
144011
154011
163912
173912
183812
193813
203813
213713
223714
233714
243714
253614
263614
273614
283614
293514
303514
313514

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

Across January, daily wind ranges from about 23 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
124breezy
224breezy
324breezy
424breezy
524breezy
624breezy
724breezy
824breezy
924breezy
1024breezy
1124breezy
1224breezy
1324breezy
1424breezy
1524breezy
1624breezy
1724breezy
1824breezy
1923breezy
2023breezy
2123breezy
2223breezy
2323breezy
2423breezy
2523breezy
2623breezy
2723breezy
2823breezy
2923breezy
3023breezy
3123breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 6 h 54 min at the start of January to 8 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over January. Sunrise moves from 8:50 AM to 8:21 AM, and sunset from 3:45 PM to 4:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
16.98:503:45
26.98:503:46
37.08:503:47
47.08:503:48
57.08:493:50
67.08:493:51
77.18:483:52
87.18:483:54
97.18:473:55
107.28:473:57
117.28:463:58
127.28:454:00
137.38:444:01
147.38:434:03
157.48:434:04
167.48:424:06
177.58:414:08
187.58:394:10
197.68:384:11
207.68:374:13
217.78:364:15
227.78:354:17
237.88:334:19
247.88:324:21
257.98:304:23
267.98:294:25
278.08:274:27
288.08:264:29
298.18:244:31
308.28:234:33
318.28:214:35

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.56 kWh/m².

For context, solar energy here swings from a low near 0.4 kWh/m² to a high of 6.04 kWh/m² in June across the year — January's 0.56 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.4Dim
20.4Dim
30.4Dim
40.4Dim
50.4Dim
60.5Dim
70.5Dim
80.5Dim
90.5Dim
100.5Dim
110.5Dim
120.5Dim
130.5Dim
140.5Dim
150.5Dim
160.6Dim
170.6Dim
180.6Dim
190.6Dim
200.6Dim
210.6Dim
220.7Dim
230.7Dim
240.7Dim
250.7Dim
260.7Dim
270.8Dim
280.8Dim
290.8Dim
300.8Dim
310.9Dim
Planning a trip in January

Is January a good time to visit Slagelse?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
7th-best month of the year

January is a weaker month for outdoor sightseeing in Slagelse.

What to pack for Slagelse in January

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

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

a warm layera heavy coatrain geara windbreaker

Sea temperature near Slagelse in January

The nearest coast averages about 3°C 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 15 km away) is warmest in August at about 18°C and coldest in February near 2°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan3Bracing
Feb2Bracing
Mar3Bracing
Apr5Bracing
May11Bracing
Jun15Bracing
Jul18Cool
Aug18Cool
Sep16Cool
Oct12Bracing
Nov8Bracing
Dec5Bracing

UV index in Slagelse in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Slagelse peaks around June 22 at about 6 (high) — a little sun protection helps at midday. It bottoms out near December 20 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 22UV 6Dec 20UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5Moderate
Jun6High
Jul6High
Aug5Moderate
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Slagelse?

Slagelse sits at 55.4°N, 11.4°E, 51 m above sea level, in Denmark. The nearest listed city is Klinteby Frihed, 28 km away.

Klinteby FrihedRingstedNæstvedKalundborgNyborgHolbækKøgeRoskilde

Topography around Slagelse

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

Within 3 km, the terrain around Slagelse has only modest variations in elevation — a maximum elevation change of 90 m around an average of 47 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 111 m; within 80 km, only modest variations in elevation — a maximum elevation change of 145 m.

The land around Slagelse is covered by artificial surfaces (30%), grassland (24%) and cropland (24%) within 3 km, cropland (50%) within 16 km, and water (49%) and cropland (29%) within 80 km.

3 km
90 m
16 km
111 m
80 km
145 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Klinteby Frihed 28 km · Ringsted 28 km · Næstved 32 km · Kalundborg 35 km · Nyborg 37 km · Holbæk 42 km · Køge 53 km · Roskilde 53 km

Denmark travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / K
230 V · 50 Hz
Prices
≈ 92% of US
price level, 2025
GDP per capita
$76,970
2025
Happiness
7.5 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
3.7
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 611
Religion
Evangelical Lutheran 71%other/none/unspecified 24%Muslim 4%

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 Slagelse (55.4028°, 11.3546°, elevation 51 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. 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).