Třinec weather in June

In June, Třinec sees average daytime highs of 21°C and overnight lows near 12°C, with 115 mm of rain across 15 wet days and about 16 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 22°C by the end. The sky is clear or mostly clear about 23% of the time in June, and the air most often feels dry.

Daylight stretches from about 15 h 48 min at the start of June to 16 h 06 min by month's end. Set against the rest of the year, June is Třinec's 5th-clearest and 10th-windiest month. For the whole year in context, see Třinec's year-round climate.

Daytime high
21°
3rd warmest
Overnight low
12°
10th coldest
Rainfall
115 mm
15 wet days
Daylight
16 h 06 min
3:44 AM – 7:47 PM
Cloud cover
63%
5th clearest
Wind
10 km/h
10th windiest
Solar energy
5.24 kWh/m²
Travel score
5.6
out of 10

Třinec is town in the Czech Republic.

Air quality
Elevated
PM2.5 18.4 µg/m³ · 2019
Density
450/km²
people per km²
Founded
1444

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 20°C in the first days to 22°C by the end.

A typical June day in Třinec reaches about 21°C in the afternoon and slips back to 12°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 27°C. Set against its neighbours, June runs about 3°C warmer than May and about 2°C cooler than July.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12010
22010
32010
42011
52011
62011
72111
82111
92111
102111
112111
122112
132112
142112
152112
162112
172112
182112
192112
202112
212112
222112
232112
242112
252212
262212
272212
282212
292212
302212

How June really feels in Třinec

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.

Třinec 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 / -4°6312.79.88.40.0
Feb / -4°6112.29.39.80.0
Mar / -1°6913.16.211.50.9
Apr13° / 6811.72.413.43.6
May18° / 11015.80.115.15.0
Jun21° / 12°115150165.6
Jul23° / 13°13415.9015.76.0
Aug23° / 13°9812.5014.26.5
Sep18° / 9412.3012.45.4
Oct13° / 7211.4110.53.4
Nov / 6411.84.38.80.9
Dec / -3°6212.18.180.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 21% of June, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44555
54357
64456
74456
84456
94456
104357
114258
124258
134258
144258
154159
164159
174159
184159
194159
204159
214357
224357
234456
244555
254555
264555
274753
284753
294852
304852

Chance of precipitation in June

Any precipitation

Třinec gets around 115 mm of rain over 15 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 50% and peaks near 52% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
152
252
352
452
552
652
752
851
951
1051
1151
1251
1351
1451
1550
1650
1750
1850
1950
2050
2149
2249
2349
2449
2549
2649
2748
2848
2948
3048

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 59% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1732340
2712450
3702550
4682660
5662770
6642880
7632890
86228100
96129100
106029110
115929120
125829121
135729131
145729131
155629141
165629141
175728141
185728141
195727151
205727151
215627152
225627152
235627152
245527162
255527162
265527162
275428162
285428162
295329162
305329171

Wind in June

Winds average 10 km/h in June.

Across June, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
89calm
99calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 15 h 48 min at the start of June to 16 h 06 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 3:50 AM to 3:47 AM, and sunset from 7:36 PM to 7:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
115.83:507:36
215.83:497:37
315.83:497:38
415.83:487:39
515.93:477:40
615.93:477:40
715.93:467:41
815.93:467:42
916.03:457:43
1016.03:457:44
1116.03:457:44
1216.03:447:45
1316.03:447:46
1416.03:447:46
1516.13:447:47
1616.13:447:47
1716.13:447:48
1816.13:447:48
1916.13:447:49
2016.13:447:49
2116.13:447:49
2216.13:447:50
2316.13:447:50
2416.13:447:50
2516.13:457:50
2616.13:457:50
2716.13:457:50
2816.13:467:50
2916.13:467:50
3016.13:477:50

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 5.24 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 0.76 kWh/m² to a high of 5.24 kWh/m² in June across the year — June's 5.24 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in June

Is June a good time to visit Třinec?

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

5.6
Sightseeing
3rd-best month of the year
3.4
Beach & pool
3rd-best month of the year

June is a reasonable time to visit Třinec for sightseeing.

What to pack for Třinec in June

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

In June, Třinec sees daytime highs around 21°C and nights near 12°C. Pack rain gear. Worth having: sun protection. About 15 days see rain.

rain gearsun protection

UV index in Třinec in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Třinec peaks around June 23 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 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 23UV 7Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May6High
Jun7Very high
Jul7Very high
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Třinec 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 Třinec is worst in June — around 23 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Třinec's WHO annual average of 18.4 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1722 µg/m³Dec 1313 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar20Moderate
Apr21Moderate
May21Moderate
Jun23Moderate
Jul21Moderate
Aug21Moderate
Sep18Moderate
Oct15Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Třinec?

Třinec sits at 49.7°N, 18.7°E, 312 m above sea level, in Czechia. The nearest listed city is Český Těšín, 8.0 km away.

Čadca

Topography around Třinec

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

Within 3 km, the terrain around Třinec has only modest variations in elevation — a maximum elevation change of 243 m around an average of 349 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 846 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,545 m.

The land around Třinec is covered by trees (52%) and grassland (23%) within 3 km, trees (60%) and grassland (23%) within 16 km, and trees (59%) and cropland (21%) within 80 km.

3 km
243 m
16 km
846 m
80 km
1,545 m
treesgrasslandcroplandartificial surfaceswater
June weather nearby: Český Těšín 8.0 km · Cieszyn 9.0 km · Ustroń 11 km · Havířov 20 km · Karviná 22 km · Frýdek-Místek 23 km · Orlová 25 km · Čadca 28 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 Třinec (49.6776°, 18.6708°, elevation 312 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).