Sisak weather in August

In August, Sisak sees average daytime highs of 29°C and overnight lows near 17°C, with 73 mm of rain across 8.6 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 29°C in the first days to 27°C by the end. The sky is clear or mostly clear about 49% of the time in August, and the air most often feels humid.

Daylight stretches from about 14 h 36 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Sisak's 1st-clearest and 12th-windiest month. For the whole year in context, see Sisak's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
17°
11th coldest
Rainfall
73 mm
8.6 wet days
Daylight
13 h 54 min
5:00 AM – 6:57 PM
Cloud cover
43%
1st clearest
Wind
7 km/h
12th windiest
Solar energy
5.29 kWh/m²
Travel score
6.2
out of 10
Air quality
Good
PM10 29.8 µg/m³ · 2019

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 29°C in the first days to 27°C by the end.

A typical August day in Sisak reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 34°C. Set against its neighbours, August runs on par with July and about 5°C warmer than September.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12918
22918
32918
42918
52918
62918
72918
82918
92918
102918
112918
122918
132917
142917
152917
162917
172917
182917
192917
202817
212817
222817
232816
242816
252816
262716
272716
282716
292715
302615
312615

How August really feels in Sisak

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.

Sisak weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°558.53.98.90.1
Feb / -1°578.83.510.11.3
Mar13° / 629.91.811.63.8
Apr18° / 6910.90.313.25.6
May23° / 12°8512.3014.76.5
Jun27° / 16°7710.8015.46.5
Jul29° / 17°719.3015.15.9
Aug29° / 17°738.6013.96.2
Sep23° / 13°909.8012.36.8
Oct18° / 768.7010.75.8
Nov11° / 799.31.49.32.8
Dec / -0°689.82.68.60.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 31%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26931
36931
47030
57129
67129
77228
87228
97228
107327
117327
127228
137327
147327
157327
167228
177228
187228
197129
207129
217030
226931
236832
246733
256733
266535
276436
286337
296238
306139
316139

Chance of precipitation in August

Any precipitation

Sisak gets around 73 mm of rain over 8.6 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 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
330
430
530
629
729
829
928
1028
1128
1228
1328
1428
1528
1628
1727
1827
1927
2027
2127
2227
2327
2427
2528
2628
2729
2829
2930
3030
3131

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 39% of days. Sticky, muggy-or-worse air turns up on roughly 14% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
172640261
272640251
382640251
482740241
582740241
692840231
792840221
8102940201
9103040191
10103140181
11113240170
12113340160
13113441150
14113441140
15113541130
16123641120
17123641110
18123641100
19133642100
2013364290
2114364290
2215364180
2316364180
2418354070
2519353970
2621353770
2722353660
2824353560
2926353350
3027363250
3129363140

Wind in August

Winds average 7 km/h in August, the calmest month.

Across August, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 36 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over August. Sunrise moves from 4:42 AM to 5:19 AM, and sunset from 7:19 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:427:19
214.64:437:17
314.54:457:16
414.54:467:15
514.44:477:13
614.44:487:12
714.44:497:11
814.34:517:09
914.34:527:08
1014.24:537:06
1114.24:547:05
1214.14:567:03
1314.14:577:02
1414.04:587:00
1514.04:596:58
1613.95:006:57
1713.95:026:55
1813.85:036:53
1913.85:046:52
2013.75:056:50
2113.75:076:48
2213.65:086:46
2313.65:096:45
2413.55:106:43
2513.55:126:41
2613.45:136:39
2713.45:146:37
2813.35:166:35
2913.35:176:34
3013.25:186:32
3113.25:196:30

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.29 kWh/m².

For context, solar energy here swings from a low near 1.08 kWh/m² to a high of 6.01 kWh/m² in July across the year — August's 5.29 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.4Bright
145.4Bright
155.4Bright
165.3Bright
175.3Bright
185.3Bright
195.2Bright
205.2Bright
215.1Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.8Bright
274.8Bright
284.7Bright
294.6Bright
304.6Bright
314.5Bright
Planning a trip in August

Is August a good time to visit Sisak?

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

6.2
Sightseeing
4th-best month of the year
7.3
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Sisak for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sisak in August

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

In August, Sisak sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Sisak in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Sisak peaks around July 14 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highHighModerateLowJul 14UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug7Very high
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Sisak 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 Sisak is worst in March — around 17 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 2317 µg/m³Sep 1912 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb15Moderate
Mar17Moderate
Apr17Moderate
May16Moderate
Jun15Moderate
Jul14Moderate
Aug14Moderate
Sep12Moderate
Oct13Moderate
Nov13Moderate
Dec13Moderate
Location & terrain

Where is Sisak?

Sisak sits at 45.5°N, 16.4°E, 108 m above sea level, in Croatia. The nearest listed city is Velika Gorica, 36 km away.

Velika GoricaSesveteCentarZagrebVelika KladušaPrijedorBjelovarZaprešić

Topography around Sisak

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

Within 3 km, the terrain around Sisak has only modest variations in elevation — a maximum elevation change of 43 m around an average of 102 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 334 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,248 m.

The land around Sisak is covered by trees (39%) within 3 km, trees (60%) within 16 km, and trees (68%) within 80 km.

3 km
43 m
16 km
334 m
80 km
1,248 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Velika Gorica 36 km · Sesvete 45 km · Centar 50 km · Zagreb 50 km · Velika Kladuša 55 km · Prijedor 60 km · Bjelovar 60 km · Zaprešić 62 km

Croatia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 53% of US
price level, 2025
GDP per capita
$27,104
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
87%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
7.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 617
Religion
Roman Catholic 79%other Christian 5%none or atheist 5%Orthodox 3%

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 Sisak (45.4661°, 16.3775°, elevation 108 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).