Opava weather in August

In August, Opava sees average daytime highs of 24°C and overnight lows near 14°C, with 72 mm of rain across 10.9 wet days and about 14.3 hours of daylight. It is the 1st-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 22°C by the end. The sky is clear or mostly clear about 31% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 h 06 min at the start of August to 13 h 24 min by month's end. Set against the rest of the year, August is Opava's 1st-clearest and 12th-windiest month. For the whole year in context, see Opava's year-round climate.

Daytime high
24°
1st warmest
Overnight low
14°
11th coldest
Rainfall
72 mm
10.9 wet days
Daylight
14 h 18 min
4:44 AM – 7:01 PM
Cloud cover
56%
1st clearest
Wind
10 km/h
12th windiest
Solar energy
4.62 kWh/m²
Travel score
6.7
out of 10

Opava is city in Moravia-Silesian Region, Czechia.

Air quality
Elevated
PM2.5 16.8 µg/m³ · 2019
Density
665/km²
people per km²
Founded
1224

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 22°C by the end.

A typical August day in Opava reaches about 24°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 19°C and 30°C. Set against its neighbours, August runs on par with July and about 5°C warmer than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52515
62515
72515
82514
92514
102514
112514
122514
132514
142514
152414
162414
172414
182414
192414
202414
212413
222413
232313
242313
252313
262313
272313
282213
292212
302212
312212

How August really feels in Opava

Once humidity and wind are folded in, August 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

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

Opava weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°389.86.28.40.0
Feb / -3°339.15.89.70.0
Mar / 4510.83.711.51.2
Apr14° / 4710.1113.54.0
May19° / 7512.8015.15.6
Jun22° / 12°86130166.1
Jul24° / 14°9913.4015.76.4
Aug24° / 14°7210.9014.36.7
Sep19° / 10°7010.8012.45.9
Oct13° / 519.40.310.53.7
Nov / 449.32.68.81.0
Dec / -2°399.257.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55644
65545
75545
85446
95446
105545
115545
125545
135545
145545
155545
165545
175545
185446
195545
205545
215446
225545
235446
245347
255347
265248
275248
285149
295050
305050
314951

Chance of precipitation in August

Any precipitation

Opava gets around 72 mm of rain over 10.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
239
339
439
538
638
738
838
937
1037
1136
1236
1335
1435
1534
1634
1734
1834
1934
2034
2134
2234
2334
2434
2535
2635
2736
2836
2937
3037
3137

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 46% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13539242
23539242
33539242
43540232
53640232
63640222
73740212
83840211
93940201
103941191
114041181
124141171
134240171
144340161
154440161
164439161
174539151
184638151
194737151
204837151
214936141
225035141
235234131
245333131
255532121
265731111
275930101
28612991
29632881
30652771
31662770

Wind in August

Winds average 10 km/h in August, the calmest month.

Across August, daily wind ranges from about 10 km/h on the calmest days to 11 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
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3111calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 06 min at the start of August to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 102 minutes over August. Sunrise moves from 4:22 AM to 5:07 AM, and sunset from 7:27 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.14:227:27
215.04:247:25
315.04:257:24
414.94:267:22
514.94:287:20
614.84:297:19
714.84:317:17
814.74:327:15
914.74:347:14
1014.64:357:12
1114.64:377:10
1214.54:387:08
1314.44:407:06
1414.44:417:05
1514.34:437:03
1614.34:447:01
1714.24:466:59
1814.24:476:57
1914.14:496:55
2014.04:506:53
2114.04:526:51
2213.94:536:49
2313.94:556:47
2413.84:566:45
2513.74:586:43
2613.74:596:40
2713.65:016:38
2813.65:036:36
2913.55:046:34
3013.45:066:32
3113.45:076:30

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.62 kWh/m².

For context, solar energy here swings from a low near 0.74 kWh/m² to a high of 5.35 kWh/m² in June across the year — August's 4.62 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.5Bright
204.5Bright
214.4Bright
224.4Bright
234.3Bright
244.3Bright
254.2Bright
264.2Bright
274.1Bright
284.0Bright
294.0Moderate
303.9Moderate
313.9Moderate
Planning a trip in August

Is August a good time to visit Opava?

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

6.7
Sightseeing
1st-best month of the year
5.6
Beach & pool
1st-best month of the year

August is a reasonable time to visit Opava for sightseeing.

What to pack for Opava in August

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

In August, Opava sees daytime highs around 24°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Opava in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Opava peaks around June 20 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighModerateLowJun 20UV 7Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May6High
Jun7Very high
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Opava in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Opava is worst in June — around 20 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Opava's WHO annual average of 16.8 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1520 µg/m³Dec 1412 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb15Moderate
Mar19Moderate
Apr19Moderate
May19Moderate
Jun20Moderate
Jul19Moderate
Aug19Moderate
Sep17Moderate
Oct14Moderate
Nov13Moderate
Dec12Moderate
Location & terrain

Where is Opava?

Opava sits at 49.9°N, 17.9°E, 262 m above sea level, in Czechia. The nearest listed city is Krnov, 22 km away.

RacibórzOstravaStarý BohumínBruntálBohumínNový JičínRydułtowy

Topography around Opava

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

Within 3 km, the terrain around Opava has only modest variations in elevation — a maximum elevation change of 58 m around an average of 264 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 366 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,357 m.

The land around Opava is covered by cropland (47%) and artificial surfaces (27%) within 3 km, cropland (61%) and trees (27%) within 16 km, and trees (44%) and cropland (36%) within 80 km.

3 km
58 m
16 km
366 m
80 km
1,357 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Krnov 22 km · Racibórz 28 km · Ostrava 30 km · Starý Bohumín 31 km · Bruntál 32 km · Bohumín 33 km · Nový Jičín 39 km · Rydułtowy 39 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 Opava (49.9387°, 17.9026°, elevation 262 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).