Louny weather in January

In January, Louny sees average daytime highs of 2°C and overnight lows near -2°C, with 31 mm of precipitation across 8.7 wet days and about 8.3 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 2°C through the month. The sky is clear or mostly clear about 14% of the time in January, and the air most often feels dry.

Daylight stretches from about 7 h 54 min at the start of January to 8 h 54 min by month's end. Set against the rest of the year, January is Louny's 10th-clearest and 1st-windiest month. For the whole year in context, see Louny's year-round climate.

Daytime high
12th warmest
Overnight low
-2°
1st coldest
Precipitation
31 mm
8.7 wet days
Daylight
8 h 18 min
8:06 AM – 4:22 PM
Cloud cover
75%
10th clearest
Wind
12 km/h
1st windiest
Solar energy
0.92 kWh/m²
Travel score
0.0
out of 10

Louny is town in Czech Republic.

Density
748/km²
people per km²
Founded
1200

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 2°C through the month.

A typical January day in Louny reaches about 2°C in the afternoon and slips back to -2°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between -4°C and 8°C. Set against its neighbours, January runs about 1°C cooler than December and about 2°C cooler than February.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
12-2
22-2
32-2
42-2
52-2
62-2
73-2
83-2
93-2
103-2
113-2
122-2
132-2
142-2
152-2
162-2
172-2
182-2
192-2
202-2
212-3
222-3
232-3
242-3
252-3
262-3
272-3
282-3
292-3
302-3
312-3

How January really feels in Louny

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.

Louny weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°318.74.28.30.0
Feb / -2°257.13.19.70.0
Mar / 3692.211.51.5
Apr14° / 3690.413.54.0
May19° / 5711.5015.25.7
Jun22° / 12°6711.1016.16.3
Jul24° / 14°7311.5015.76.7
Aug24° / 14°649.8014.36.9
Sep19° / 10°488.6012.46.1
Oct13° / 418.60.110.53.6
Nov / 3781.38.80.8
Dec / -1°358.83.97.90.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 10% of January, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22575
32575
42575
52476
62476
72476
82476
92476
102476
112575
122575
132575
142674
152575
162575
172575
182575
192575
202476
212476
222476
232575
242575
252575
262575
272575
282575
292674
302674
312674

Chance of precipitation in January

Any precipitationSnow

Louny gets around 31 mm of rain and snow over 8.7 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 28% and peaks near 31% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13012
23112
33112
43112
53112
63112
73112
83112
93012
103012
112912
122912
132812
142813
152713
162713
172614
182614
192615
202615
212615
222615
232615
242615
252615
262615
272614
282614
292513
302513
312513

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 12 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 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712calm
1812calm
1912calm
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 54 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 60 minutes over January. Sunrise moves from 8:12 AM to 7:51 AM, and sunset from 4:04 PM to 4:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.98:124:04
27.98:124:05
37.98:124:06
47.98:124:07
57.98:114:08
68.08:114:09
78.08:114:10
88.08:114:11
98.08:104:13
108.18:104:14
118.18:094:15
128.18:094:16
138.28:084:18
148.28:084:19
158.28:074:20
168.38:064:22
178.38:064:23
188.38:054:25
198.48:044:26
208.48:034:28
218.48:024:29
228.58:014:31
238.58:004:32
248.67:594:34
258.67:584:35
268.77:574:37
278.77:564:39
288.87:554:40
298.87:544:42
308.97:524:44
318.97:514:45

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.92 kWh/m².

For context, solar energy here swings from a low near 0.72 kWh/m² to a high of 5.44 kWh/m² in June across the year — January's 0.92 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.7Dim
20.8Dim
30.8Dim
40.8Dim
50.8Dim
60.8Dim
70.8Dim
80.8Dim
90.8Dim
100.8Dim
110.8Dim
120.8Dim
130.9Dim
140.9Dim
150.9Dim
160.9Dim
170.9Dim
180.9Dim
191.0Dim
201.0Dim
211.0Dim
221.0Dim
231.1Dim
241.1Dim
251.1Dim
261.1Dim
271.1Dim
281.2Dim
291.2Dim
301.2Dim
311.3Dim
Planning a trip in January

Is January a good time to visit Louny?

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
8th-best month of the year

January is a weaker month for outdoor sightseeing in Louny.

What to pack for Louny in January

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

In January, Louny sees daytime highs around 2°C and nights near -2°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

UV index in Louny 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 Louny peaks around June 21 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 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 highHighModerateLowJun 21UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun7Very high
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Louny 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 Louny is worst in April — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1321 µg/m³Dec 1414 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb16Moderate
Mar20Moderate
Apr21Moderate
May18Moderate
Jun20Moderate
Jul18Moderate
Aug19Moderate
Sep18Moderate
Oct16Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Louny?

Louny sits at 50.4°N, 13.8°E, 185 m above sea level, in Czechia. The nearest listed city is Žatec, 18 km away.

RakovníkChomutovJirkovLitvínovTerezín

Topography around Louny

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

Within 3 km, the terrain around Louny has only modest variations in elevation — a maximum elevation change of 100 m around an average of 207 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 534 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,205 m.

The land around Louny is covered by cropland (60%) within 3 km, cropland (63%) and trees (24%) within 16 km, and trees (47%) and cropland (31%) within 80 km.

3 km
100 m
16 km
534 m
80 km
1,205 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Žatec 18 km · Most 20 km · Slaný 25 km · Rakovník 29 km · Chomutov 29 km · Jirkov 29 km · Litvínov 30 km · Terezín 30 km

Czechia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 59% of US
price level, 2025
GDP per capita
$35,917
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
5.9
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 582
Religion
none 48%believers unaffiliated with a religious society 9%Roman Catholic 7%other believers belonging to a church or religious society 6%

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 Louny (50.357°, 13.7967°, elevation 185 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).