Trbovlje weather in January

In January, Trbovlje sees average daytime highs of 3°C and overnight lows near -3°C, with 43 mm of precipitation across 7.4 wet days and about 8.8 hours of daylight. It is the 12th-warmest and 12th-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 27% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 30 min at the start of January to 9 h 18 min by month's end. Set against the rest of the year, January is Trbovlje's 10th-clearest and 5th-windiest month. For the whole year in context, see Trbovlje's year-round climate.

Daytime high
12th warmest
Overnight low
-3°
1st coldest
Precipitation
43 mm
7.4 wet days
Daylight
8 h 48 min
7:45 AM – 4:33 PM
Cloud cover
66%
10th clearest
Wind
6 km/h
5th windiest
Solar energy
1.32 kWh/m²
Travel score
0.0
out of 10

Trbovlje is town in Slovenia.

Air quality
Good
PM10 22.2 µg/m³ · 2019
Density
262/km²
people per km²
Founded
1220

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 Trbovlje reaches about 3°C in the afternoon and slips back to -3°C overnight — a 6°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 2°C cooler than February.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
13-3
23-3
33-3
43-3
53-3
63-3
73-3
83-3
93-3
103-3
113-3
123-3
133-3
143-3
153-3
163-3
173-3
183-3
193-3
203-3
213-3
223-3
233-3
243-3
253-3
263-3
273-3
283-3
293-3
304-3
314-3

How January really feels in Trbovlje

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.

Trbovlje weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°437.44.68.80.0
Feb / -3°567.54.5100.3
Mar10° / 6510.23.511.62.3
Apr15° / 84120.913.34.1
May19° / 10°10213.9014.75.6
Jun23° / 13°11514.4015.56.1
Jul25° / 15°12014.2015.26.4
Aug24° / 15°11012.80146.5
Sep20° / 11°10911.8012.35.9
Oct14° / 969.30.410.74.3
Nov / 92102.39.21.4
Dec / -2°708.94.98.50.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 12% of January, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23961
33961
43862
53862
63862
73862
83961
93961
103961
113961
123961
133961
143862
153961
163961
173961
183961
193961
203961
213961
223862
233862
243862
253862
263862
273862
283961
293862
303961
313961

Chance of precipitation in January

Any precipitationSnow

Trbovlje gets around 43 mm of rain and snow over 7.4 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 24% and peaks near 27% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12715
22615
32615
42514
52514
62514
72413
82413
92413
102413
112413
122413
132413
142414
152414
162414
172514
182515
192415
202415
212415
222416
232416
242416
252416
262416
272416
282416
292316
302316
312316

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 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 h 30 min at the start of January to 9 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:48 AM to 7:33 AM, and sunset from 4:18 PM to 4:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.57:484:18
28.57:484:18
38.57:484:19
48.57:484:20
58.57:484:21
68.67:484:22
78.67:484:23
88.67:484:24
98.67:484:25
108.67:474:26
118.77:474:27
128.77:474:29
138.77:464:30
148.77:464:31
158.87:454:32
168.87:454:33
178.87:444:35
188.97:444:36
198.97:434:37
208.97:424:38
219.07:424:40
229.07:414:41
239.07:404:42
249.17:394:44
259.17:394:45
269.17:384:46
279.27:374:48
289.27:364:49
299.37:354:51
309.37:344:52
319.37:334:54

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.32 kWh/m².

For context, solar energy here swings from a low near 1.06 kWh/m² to a high of 5.72 kWh/m² in June across the year — January's 1.32 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.1Dim
21.1Dim
31.1Dim
41.1Dim
51.1Dim
61.2Dim
71.2Dim
81.2Dim
91.2Dim
101.2Dim
111.2Dim
121.2Dim
131.3Dim
141.3Dim
151.3Dim
161.3Dim
171.3Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.4Dim
231.5Dim
241.5Dim
251.5Dim
261.6Dim
271.6Dim
281.6Dim
291.6Dim
301.7Dim
311.7Dim
Planning a trip in January

Is January a good time to visit Trbovlje?

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 Trbovlje.

What to pack for Trbovlje in January

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

In January, Trbovlje sees daytime highs around 3°C and nights near -3°C. Pack a warm layer and a heavy coat. About 7 days see rain.

a warm layera heavy coat

UV index in Trbovlje 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 Trbovlje peaks around July 15 at about 8 (very high) — sunscreen, a hat and midday shade are essential. 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 15UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Trbovlje 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 Trbovlje is worst in April — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateApr 917 µg/m³Sep 2012 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb15Moderate
Mar17Moderate
Apr17Moderate
May15Moderate
Jun15Moderate
Jul14Moderate
Aug13Moderate
Sep12Good
Oct12Good
Nov12Good
Dec14Moderate
Location & terrain

Where is Trbovlje?

Trbovlje sits at 46.2°N, 15.1°E, 409 m above sea level, in Slovenia. The nearest listed city is Celje, 18 km away.

CeljeVelenjeNovo MestoLjubljanaŽumberakKranjMariborSamobor

Topography around Trbovlje

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

Within 3 km, the terrain around Trbovlje has large variations in elevation — a maximum elevation change of 733 m around an average of 433 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,024 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,360 m.

The land around Trbovlje is covered by trees (74%) within 3 km, trees (74%) within 16 km, and trees (74%) within 80 km.

3 km
733 m
16 km
1,024 m
80 km
2,360 m
treesgrasslandcroplandartificial surfaces
January weather nearby: Celje 18 km · Velenje 23 km · Novo Mesto 40 km · Ljubljana 44 km · Žumberak 51 km · Kranj 54 km · Maribor 64 km · Samobor 65 km

Slovenia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 63% of US
price level, 2025
GDP per capita
$37,376
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
Religion
Catholic 69%atheist 14%Orthodox 4%non-believer/agnostic 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 Trbovlje (46.1541°, 15.0518°, elevation 409 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).