Celje weather in June

In June, Celje sees average daytime highs of 23°C and overnight lows near 14°C, with 104 mm of rain across 14 wet days and about 15.5 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 30% of the time in June, and the air most often feels dry.

Daylight stretches from about 15 h 18 min at the start of June to 15 h 36 min by month's end. Set against the rest of the year, June is Celje's 3rd-clearest and 8th-windiest month. For the whole year in context, see Celje's year-round climate.

Daytime high
23°
3rd warmest
Overnight low
14°
10th coldest
Rainfall
104 mm
14 wet days
Daylight
15 h 36 min
4:12 AM – 7:46 PM
Cloud cover
57%
3rd clearest
Wind
6 km/h
8th windiest
Solar energy
5.72 kWh/m²
Travel score
6.3
out of 10

Celje is city in Slovenia.

Air quality
Good
PM10 27.4 µg/m³ · 2019
Density
1,676/km²
people per km²
Founded
1451

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 24°C by the end.

A typical June day in Celje reaches about 23°C in the afternoon and slips back to 14°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 29°C. Set against its neighbours, June runs about 4°C warmer than May and about 2°C cooler than July.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12212
22212
32212
42212
52213
62213
72313
82313
92313
102313
112313
122314
132314
142314
152414
162414
172414
182414
192414
202414
212414
222414
232414
242414
252414
262415
272415
282515
292515
302515

How June really feels in Celje

Once humidity and wind are folded in, June averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

June sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Celje weather by month

How June compares with the rest of the year at a glance. June is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°417.24.38.80.0
Feb / -2°537.44.3100.4
Mar11° / 639.93.211.62.6
Apr15° / 7611.40.813.34.4
May20° / 10°9513014.75.8
Jun23° / 14°10414015.56.3
Jul25° / 15°10513.3015.26.4
Aug25° / 15°10112.10146.6
Sep20° / 11°10311.2012.36.1
Oct15° / 889.10.310.74.5
Nov / 869.82.39.21.6
Dec / -2°668.94.58.50.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 22% of June, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24654
34654
44753
54654
64654
74654
84753
94852
104852
114951
125050
135050
145149
155248
165248
175347
185347
195347
205446
215545
225545
235644
245644
255743
265743
275842
285842
295941
305941

Chance of precipitation in June

Any precipitation

Celje gets around 104 mm of rain over 14 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 46% and peaks near 49% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
148
248
349
449
549
649
749
848
948
1047
1147
1246
1346
1446
1545
1645
1745
1845
1945
2045
2145
2244
2344
2444
2544
2644
2744
2844
2944
3044

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

Most of June feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, June lands in the dry band about 43% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1633160
2603370
3583480
4553690
5543790
65238100
75039110
84840120
94740130
104641130
114441140
124341151
134241161
144140171
154140181
164039191
173939202
183938212
193837222
203837232
213736243
223736253
233636253
243535263
253535273
263435283
273335293
283235293
293136303
303136303

Wind in June

Winds average 6 km/h in June.

Across June, 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.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 15 h 18 min at the start of June to 15 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over June. Sunrise moves from 4:17 AM to 4:16 AM, and sunset from 7:35 PM to 7:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
115.34:177:35
215.34:177:36
315.34:167:37
415.44:167:38
515.44:157:39
615.44:157:40
715.44:147:41
815.54:147:41
915.54:147:42
1015.54:137:43
1115.54:137:43
1215.54:137:44
1315.54:137:45
1415.54:137:45
1515.64:127:46
1615.64:127:46
1715.64:127:46
1815.64:127:47
1915.64:127:47
2015.64:137:48
2115.64:137:48
2215.64:137:48
2315.64:137:48
2415.64:137:48
2515.64:147:49
2615.64:147:49
2715.64:147:49
2815.64:157:49
2915.64:157:49
3015.64:167:49

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.72 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.08 kWh/m² to a high of 5.72 kWh/m² in June across the year — June's 5.72 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
Planning a trip in June

Is June a good time to visit Celje?

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

6.3
Sightseeing
3rd-best month of the year
5.0
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Celje for sightseeing.

What to pack for Celje in June

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

In June, Celje sees daytime highs around 23°C and nights near 14°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

UV index in Celje in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Celje 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr7High
May7High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Celje in June

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where June falls, not just the annual average.

Air quality in Celje 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 Celje?

Celje sits at 46.2°N, 15.3°E, 240 m above sea level, in Slovenia. The nearest listed city is Velenje, 18 km away.

VelenjeTrbovljeMariborNovo MestoPtujŽumberakSamoborZaprešić

Topography around Celje

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

Within 3 km, the terrain around Celje has significant variations in elevation — a maximum elevation change of 368 m around an average of 283 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 915 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,391 m.

The land around Celje is covered by trees (42%), artificial surfaces (25%) and grassland (24%) within 3 km, trees (62%) and grassland (27%) within 16 km, and trees (70%) within 80 km.

3 km
368 m
16 km
915 m
80 km
2,391 m
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Velenje 18 km · Trbovlje 18 km · Maribor 47 km · Novo Mesto 48 km · Ptuj 51 km · Žumberak 53 km · Samobor 59 km · Zaprešić 59 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 Celje (46.2309°, 15.2604°, elevation 240 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).