Ostrov weather in July

In July, Ostrov sees average daytime highs of 22°C and overnight lows near 12°C, with 90 mm of rain across 14 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 21°C in the first days to 22°C by the end. The sky is clear or mostly clear about 22% of the time in July, and the air most often feels dry.

Daylight stretches from about 16 h 06 min at the start of July to 15 h 12 min by month's end. Set against the rest of the year, July is Ostrov's 2nd-clearest and 10th-windiest month. For the whole year in context, see Ostrov's year-round climate.

Daytime high
22°
1st warmest
Overnight low
12°
12th coldest
Rainfall
90 mm
14 wet days
Daylight
15 h 48 min
4:20 AM – 8:07 PM
Cloud cover
63%
2nd clearest
Wind
10 km/h
10th windiest
Solar energy
5.3 kWh/m²
Travel score
5.9
out of 10

Ostrov is town in the Czech Republic.

Density
311/km²
people per km²
Founded
1331

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 21°C in the first days to 22°C by the end.

A typical July day in Ostrov reaches about 22°C in the afternoon and slips back to 12°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 27°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)
12111
22111
32111
42111
52111
62111
72111
82111
92112
102112
112112
122112
132112
142112
152112
162112
172112
182212
192212
202212
212212
222212
232212
242212
252212
262212
272213
282213
292313
302313
312313

How July really feels in Ostrov

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.

Ostrov 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°5011.58.78.30.0
Feb / -4°398.96.79.70.0
Mar / -1°5211.96.111.50.5
Apr11° / 4711.41.813.52.8
May16° / 70140.115.24.6
Jun19° / 10°8213.9016.15.5
Jul22° / 12°9014015.75.9
Aug21° / 12°7812.8014.36.1
Sep17° / 6010.4012.45.0
Oct11° / 5210.50.810.52.5
Nov / 499.548.80.3
Dec / -3°5210.68.17.90.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14060
24060
33961
44060
53961
63961
73862
83862
93862
103763
113763
123862
133862
143862
153961
164060
174159
184159
194258
204357
214357
224456
234555
244654
254654
264753
274753
284852
294852
304852
314951

Chance of precipitation in July

Any precipitation

Ostrov gets around 90 mm of rain over 14 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 45% and peaks near 48% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
145
245
346
446
547
647
748
848
948
1048
1148
1248
1347
1447
1546
1646
1745
1845
1944
2044
2143
2243
2343
2442
2542
2642
2742
2842
2942
3042
3142

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 69% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
175223
274233
374233
474233
573243
673243
772244
872244
972244
1071254
1171254
1271254
1371254
1470264
1569265
1669265
1768275
1868275
1968275
2067285
2167285
2266295
2366295
2465305
2565305
2663316
2763316
2863316
2963316
3062326
3162326

Wind in July

Winds average 10 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
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 16 h 06 min at the start of July to 15 h 12 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 4:07 AM to 4:39 AM, and sunset from 8:16 PM to 7:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
116.14:078:16
216.14:088:16
316.14:098:15
416.14:098:15
516.14:108:15
616.14:118:14
716.04:128:14
816.04:128:13
916.04:138:13
1016.04:148:12
1115.94:158:11
1215.94:168:11
1315.94:178:10
1415.94:188:09
1515.84:198:08
1615.84:208:07
1715.84:218:07
1815.74:228:06
1915.74:248:05
2015.64:258:04
2115.64:268:02
2215.64:278:01
2315.54:298:00
2415.54:307:59
2515.44:317:58
2615.44:337:56
2715.44:347:55
2815.34:357:54
2915.34:377:52
3015.24:387:51
3115.24:397:49

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.3 kWh/m².

For context, solar energy here swings from a low near 0.73 kWh/m² to a high of 5.4 kWh/m² in June across the year — July's 5.3 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.1Bright
Planning a trip in July

Is July a good time to visit Ostrov?

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

5.9
Sightseeing
2nd-best month of the year
3.9
Beach & pool
1st-best month of the year

July is a reasonable time to visit Ostrov for sightseeing.

What to pack for Ostrov in July

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

In July, Ostrov sees daytime highs around 22°C and nights near 12°C. Pack rain gear. Worth having: sun protection. About 14 days see rain.

rain gearsun protection

UV index in Ostrov 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 Ostrov peaks around June 22 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 highHighModerateLowJun 22UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun7Very high
Jul7Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Ostrov 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 Ostrov is worst in April — around 18 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1518 µg/m³Dec 1311 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar17Moderate
Apr18Moderate
May16Moderate
Jun18Moderate
Jul16Moderate
Aug16Moderate
Sep16Moderate
Oct13Moderate
Nov12Good
Dec11Good
Location & terrain

Where is Ostrov?

Ostrov sits at 50.3°N, 12.9°E, 398 m above sea level, in Czechia. The nearest listed city is Karlovy Vary, 9.0 km away.

SchwarzenbergAnnaberg-BuchholzAueChomutovSchneeberg

Topography around Ostrov

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

Within 3 km, the terrain around Ostrov has only modest variations in elevation — a maximum elevation change of 239 m around an average of 441 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 947 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,205 m.

The land around Ostrov is covered by trees (41%), grassland (26%) and cropland (22%) within 3 km, trees (71%) and grassland (22%) within 16 km, and trees (48%) and cropland (30%) within 80 km.

3 km
239 m
16 km
947 m
80 km
1,205 m
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Karlovy Vary 9.0 km · Kadaň 25 km · Sokolov 25 km · Schwarzenberg 28 km · Annaberg-Buchholz 31 km · Aue 36 km · Chomutov 38 km · Schneeberg 38 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 Ostrov (50.3059°, 12.9391°, elevation 398 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).