Třinec weather in July

In July, Třinec sees average daytime highs of 23°C and overnight lows near 13°C, with 134 mm of rain across 15.9 wet days and about 15.7 hours of daylight. It is the 1st-warmest and 1st-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 July, and the air most often feels dry.

Daylight stretches from about 16 hours at the start of July to 15 h 06 min by month's end. Set against the rest of the year, July is Třinec's 2nd-clearest and 11th-windiest month. For the whole year in context, see Třinec's year-round climate.

Daytime high
23°
1st warmest
Overnight low
13°
12th coldest
Rainfall
134 mm
15.9 wet days
Daylight
15 h 42 min
4:00 AM – 7:42 PM
Cloud cover
58%
2nd clearest
Wind
9 km/h
11th windiest
Solar energy
5.13 kWh/m²
Travel score
6.0
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 July

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 July day in Třinec reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 29°C. Set against its neighbours, July runs about 2°C warmer than June and on par with August.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12213
22213
32213
42213
52213
62213
72213
82213
92213
102313
112313
122313
132313
142313
152313
162313
172313
182313
192314
202314
212314
222314
232314
242314
252414
262414
272414
282414
292414
302414
312414

How July really feels in Třinec

Once humidity and wind are folded in, July 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

July 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 July compares with the rest of the year at a glance. July is the 1st-warmest and 1st-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 July

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 20% of July, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
25050
34951
44951
54951
64951
74951
84951
94951
104852
114951
124951
134852
144852
154852
164852
174852
184951
194951
205050
214951
225149
235149
245149
255149
265248
275248
285248
295248
305248
315347

Chance of precipitation in July

Any precipitation

Třinec gets around 134 mm of rain over 15.9 wet days in July, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 51% and peaks near 54% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
149
249
349
450
551
652
752
853
953
1054
1154
1254
1354
1454
1554
1654
1753
1853
1952
2052
2151
2250
2349
2449
2548
2647
2747
2846
2946
3046
3145

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the dry band about 38% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15230171
25230171
35131171
45031181
54931181
64932191
74832191
84733191
94633201
104534201
114434211
124334211
134235221
144135232
153936232
163836242
173737242
183637252
193538252
203339262
213239262
223140272
233040283
242940283
252840293
262740303
272640313
282640323
292540323
302540333
312440333

Wind in July

Winds average 9 km/h in July.

Across July, 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.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 hours at the start of July to 15 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over July. Sunrise moves from 3:47 AM to 4:19 AM, and sunset from 7:50 PM to 7:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.03:477:50
216.03:487:50
316.03:497:49
416.03:497:49
516.03:507:49
616.03:517:48
715.93:527:48
815.93:527:47
915.93:537:47
1015.93:547:46
1115.83:557:46
1215.83:567:45
1315.83:577:44
1415.83:587:44
1515.73:597:43
1615.74:007:42
1715.74:017:41
1815.64:027:40
1915.64:037:39
2015.64:057:38
2115.54:067:37
2215.54:077:36
2315.44:087:35
2415.44:097:33
2515.44:117:32
2615.34:127:31
2715.34:137:30
2815.24:157:28
2915.24:167:27
3015.14:177:26
3115.14:197:24

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.13 kWh/m².

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 — July's 5.13 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
284.9Bright
294.9Bright
304.9Bright
314.9Bright
Planning a trip in July

Is July a good time to visit Třinec?

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

6.0
Sightseeing
2nd-best month of the year
4.6
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Třinec for sightseeing.

What to pack for Třinec in July

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

In July, Třinec sees daytime highs around 23°C and nights near 13°C. Pack rain gear. Worth having: light clothes and sun protection. About 16 days see rain.

rain gearlight clothessun protection

UV index in Třinec in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July 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 July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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
July 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).