Jirkov weather in January

In January, Jirkov sees average daytime highs of 1°C and overnight lows near -3°C, with 43 mm of precipitation across 10.6 wet days and about 8.3 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 1°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 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 Jirkov's 10th-clearest and 1st-windiest month. For the whole year in context, see Jirkov's year-round climate.

Daytime high
12th warmest
Overnight low
-3°
1st coldest
Precipitation
43 mm
10.6 wet days
Daylight
8 h 12 min
8:08 AM – 4:23 PM
Cloud cover
76%
10th clearest
Wind
12 km/h
1st windiest
Solar energy
0.9 kWh/m²
Travel score
0.0
out of 10

Jirkov is town in the Czech Republic.

Density
1,123/km²
people per km²
Founded
1352

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 1°C through the month.

A typical January day in Jirkov reaches about 1°C in the afternoon and slips back to -3°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between -5°C and 7°C. Set against its neighbours, January runs about 1°C cooler than December and about 1°C cooler than February.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
12-3
22-3
32-3
42-3
52-3
62-3
72-3
82-3
92-3
102-3
112-3
122-3
132-3
142-3
151-3
161-3
171-3
181-3
191-3
201-3
211-3
221-3
231-3
241-4
251-4
261-4
271-4
281-4
291-4
301-4
311-4

How January really feels in Jirkov

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.

Jirkov weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°4310.67.18.30.0
Feb / -3°338.65.49.70.0
Mar / -0°45114.311.50.9
Apr13° / 399.91.313.53.4
May17° / 6012.5015.25.2
Jun21° / 11°7113016.15.8
Jul23° / 13°8113.5015.86.2
Aug23° / 13°7112.2014.36.5
Sep18° / 539.6012.45.6
Oct12° / 4710.30.510.42.9
Nov / 439.12.78.70.5
Dec / -2°4410.167.90.0

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 9% of January, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12278
22278
32278
42278
52278
62179
72278
82278
92278
102278
112377
122476
132476
142575
152575
162575
172476
182476
192476
202377
212377
222377
232377
242377
252377
262377
272377
282476
292476
302476
312476

Chance of precipitation in January

Any precipitationSnow

Jirkov gets around 43 mm of rain and snow over 10.6 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 33% and peaks near 35% on the wettest days, and about 7 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13320
23320
33420
43420
53420
63521
73521
83521
93521
103521
113521
123422
133422
143422
153422
163323
173323
183323
193324
203324
213324
223324
233325
243324
253324
263324
273323
283223
293222
303222
313121

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 11 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
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

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 8:14 AM to 7:53 AM, and sunset from 4:05 PM to 4:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.88:144:05
27.98:144:06
37.98:144:07
47.98:144:08
57.98:144:09
67.98:134:10
78.08:134:11
88.08:134:12
98.08:124:13
108.08:124:15
118.18:114:16
128.18:114:17
138.18:104:18
148.28:104:20
158.28:094:21
168.28:084:23
178.38:084:24
188.38:074:25
198.38:064:27
208.48:054:28
218.48:044:30
228.58:034:32
238.58:024:33
248.68:014:35
258.68:004:36
268.67:594:38
278.77:584:39
288.77:574:41
298.87:564:43
308.87:544:44
318.97:534:46

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.9 kWh/m².

For context, solar energy here swings from a low near 0.7 kWh/m² to a high of 5.37 kWh/m² in June across the year — January's 0.9 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.7Dim
20.7Dim
30.7Dim
40.7Dim
50.8Dim
60.8Dim
70.8Dim
80.8Dim
90.8Dim
100.8Dim
110.8Dim
120.8Dim
130.8Dim
140.9Dim
150.9Dim
160.9Dim
170.9Dim
180.9Dim
190.9Dim
201.0Dim
211.0Dim
221.0Dim
231.0Dim
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 Jirkov?

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 Jirkov.

What to pack for Jirkov in January

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

In January, Jirkov sees daytime highs around 1°C and nights near -3°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

UV index in Jirkov 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 Jirkov 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 Jirkov 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 Jirkov 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 Jirkov?

Jirkov sits at 50.5°N, 13.4°E, 305 m above sea level, in Czechia. The nearest listed city is Chomutov, 5.0 km away.

LounyTeplice

Topography around Jirkov

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

Within 3 km, the terrain around Jirkov has significant variations in elevation — a maximum elevation change of 318 m around an average of 362 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 864 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,205 m.

The land around Jirkov is covered by trees (47%) and grassland (21%) within 3 km, trees (47%), cropland (23%) and grassland (21%) within 16 km, and trees (45%) and cropland (32%) within 80 km.

3 km
318 m
16 km
864 m
80 km
1,205 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Chomutov 5.0 km · Most 13 km · Litvínov 17 km · Kadaň 18 km · Žatec 20 km · Marienberg 26 km · Louny 29 km · Teplice 31 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 Jirkov (50.4998°, 13.4477°, elevation 305 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).