Karlštejn weather in August

In August, Karlštejn sees average daytime highs of 24°C and overnight lows near 14°C, with 78 mm of rain across 11 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 2nd-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 27% 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 Karlštejn's 1st-clearest and 12th-windiest month. For the whole year in context, see Karlštejn's year-round climate.

Daytime high
24°
2nd warmest
Overnight low
14°
11th coldest
Rainfall
78 mm
11 wet days
Daylight
14 h 18 min
4:59 AM – 7:16 PM
Cloud cover
58%
1st clearest
Wind
9 km/h
12th windiest
Solar energy
4.69 kWh/m²
Travel score
6.7
out of 10

Karlštejn is market town in Czech Republic.

Density
58/km²
people per km²
Founded
1348

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 Karlštejn 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 18°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
72514
82514
92514
102514
112514
122514
132514
142414
152414
162414
172414
182414
192414
202414
212413
222413
232313
242313
252313
262313
272313
282213
292212
302212
312212

How August really feels in Karlštejn

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.

Karlštejn weather by month

How August compares with the rest of the year at a glance. August is the 2nd-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°369.75.38.40.0
Feb / -2°318.13.89.70.0
Mar / 4310.82.911.51.5
Apr14° / 40100.713.54.0
May19° / 7113.3015.15.5
Jun22° / 12°77120166.2
Jul24° / 14°8112.8015.76.5
Aug24° / 14°7811014.36.7
Sep19° / 10°589.5012.45.9
Oct13° / 459.70.110.53.6
Nov / 398.71.58.80.9
Dec / -1°379.347.90.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% 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 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25446
35446
45446
55446
65446
75248
85248
95248
105248
115149
125149
135149
145149
155050
165050
175050
185050
195050
205050
214951
224852
234852
244852
254753
264654
274654
284555
294654
304654
314555

Chance of precipitation in August

Any precipitation

Karlštejn gets around 78 mm of rain over 11 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 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
136
236
336
436
537
637
737
837
937
1037
1138
1238
1337
1437
1537
1637
1737
1836
1936
2036
2135
2235
2335
2434
2534
2634
2734
2833
2933
3033
3132

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 57% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1483615
2493615
3493615
4503614
5513514
6523513
7523513
8543412
9543412
10553312
11563311
12563311
13563311
14573211
15573211
16563212
17573112
18573112
19583012
20573013
21582913
22582913
23602812
24602812
25622711
26632611
27642610
28652510
2967249
3069238
3170237

Wind in August

Winds average 9 km/h in August, the calmest month.

Across August, 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
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 4:37 AM to 5:22 AM, and sunset from 7:42 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.14:377:42
215.04:397:40
315.04:407:38
414.94:417:37
514.94:437:35
614.84:447:34
714.84:467:32
814.74:477:30
914.74:497:28
1014.64:507:27
1114.64:527:25
1214.54:537:23
1314.44:557:21
1414.44:567:19
1514.34:587:18
1614.34:597:16
1714.25:017:14
1814.25:027:12
1914.15:047:10
2014.05:057:08
2114.05:077:06
2213.95:087:04
2313.95:107:02
2413.85:117:00
2513.75:136:57
2613.75:146:55
2713.65:166:53
2813.65:176:51
2913.55:196:49
3013.45:206:47
3113.45:226:45

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.69 kWh/m².

For context, solar energy here swings from a low near 0.75 kWh/m² to a high of 5.47 kWh/m² in June across the year — August's 4.69 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.1Bright
45.1Bright
55.1Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.8Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.5Bright
234.4Bright
244.3Bright
254.3Bright
264.2Bright
274.2Bright
284.1Bright
294.1Bright
304.0Bright
313.9Moderate
Planning a trip in August

Is August a good time to visit Karlštejn?

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 Karlštejn for sightseeing.

What to pack for Karlštejn in August

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

In August, Karlštejn 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 Karlštejn 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 Karlštejn peaks around June 21 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 21UV 7Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr4Moderate
May6High
Jun7Very high
Jul7High
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Karlštejn 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 Karlštejn is worst in April — around 22 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateApr 1022 µg/m³Dec 1515 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb18Moderate
Mar21Moderate
Apr22Moderate
May19Moderate
Jun21Moderate
Jul18Moderate
Aug19Moderate
Sep19Moderate
Oct17Moderate
Nov16Moderate
Dec15Moderate
Location & terrain

Where is Karlštejn?

Karlštejn sits at 49.9°N, 14.2°E, 0 m above sea level, in Czechia. The nearest listed city is Beroun, 9.0 km away.

Topography around Karlštejn

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

Within 3 km, the terrain around Karlštejn has only modest variations in elevation — a maximum elevation change of 237 m around an average of 323 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 474 m; within 80 km, large variations in elevation — a maximum elevation change of 829 m.

The land around Karlštejn is covered by trees (52%), cropland (22%) and grassland (20%) within 3 km, trees (48%) and cropland (28%) within 16 km, and cropland (43%) and trees (39%) within 80 km.

3 km
237 m
16 km
474 m
80 km
829 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Beroun 9.0 km · Stodůlky 16 km · Řepy 17 km · Modřany 18 km · Košíře 19 km · Hlubočepy 19 km · Braník 20 km · Smíchov 22 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 Karlštejn (49.9374°, 14.186°, elevation 0 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).