Bosanska Krupa weather in September

In September, Bosanska Krupa sees average daytime highs of 22°C and overnight lows near 11°C, with 111 mm of rain across 11 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 20°C by the end. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Bosanska Krupa's 4th-clearest and 9th-windiest month. For the whole year in context, see Bosanska Krupa's year-round climate.

Daytime high
22°
4th warmest
Overnight low
11°
9th coldest
Rainfall
111 mm
11 wet days
Daylight
12 h 18 min
5:40 AM – 5:59 PM
Cloud cover
55%
4th clearest
Wind
6 km/h
9th windiest
Solar energy
3.72 kWh/m²
Travel score
6.5
out of 10

Bosanska Krupa is place in the Federation of Bosnia and Herzegovina.

Density
27/km²
people per km²

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 20°C by the end.

A typical September day in Bosanska Krupa reaches about 22°C in the afternoon and slips back to 11°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 28°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12413
22413
32413
42413
52413
62312
72312
82312
92312
102312
112312
122212
132211
142211
152211
162211
172211
182111
192111
202111
212110
222110
232110
242010
252010
262010
272010
282010
29209
30209

How September really feels in Bosanska Krupa

Once humidity and wind are folded in, September 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

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

Bosanska Krupa weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°7410.26.790.0
Feb / -2°7610.56.310.10.8
Mar12° / 8211.64.511.63.0
Apr17° / 9713.31.213.24.8
May21° / 10°12014.30.114.65.9
Jun25° / 14°9912.8015.36.5
Jul27° / 15°8811.40156.6
Aug27° / 15°839.8013.96.8
Sep22° / 11°11111012.36.5
Oct17° / 9010.10.610.75.3
Nov11° / 10011.339.42.4
Dec / -1°8911.75.98.70.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15941
25743
35743
45644
55545
65545
75545
85545
95545
105446
115446
125446
135347
145347
155347
165347
175347
185347
195347
205248
215248
225248
235347
245347
255248
265248
275347
285248
295248
305149

Chance of precipitation in September

Any precipitation

Bosanska Krupa gets around 111 mm of rain over 11 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
437
537
638
738
838
938
1038
1138
1238
1338
1438
1538
1637
1737
1837
1936
2036
2136
2235
2335
2435
2535
2635
2735
2835
2935
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13735262
23835252
34035231
44136221
54236211
64237201
74338191
84438180
94439170
104539160
114639150
124739140
134839130
145039120
155138110
165337100
17553690
18573580
19603370
20623170
21643060
22662860
23682750
24702550
25722440
26722440
27732340
28752230
29752230
30762130

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 5:22 AM to 5:58 AM, and sunset from 6:28 PM to 5:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:226:28
213.05:236:26
313.05:256:24
412.95:266:22
512.95:276:20
612.85:286:19
712.85:296:17
812.75:316:15
912.75:326:13
1012.65:336:11
1112.65:346:09
1212.55:366:07
1312.55:376:05
1412.45:386:03
1512.45:396:01
1612.35:405:59
1712.35:425:57
1812.25:435:55
1912.15:445:53
2012.15:455:51
2112.05:475:49
2212.05:485:47
2311.95:495:45
2411.95:505:43
2511.85:525:41
2611.85:535:39
2711.75:545:37
2811.75:555:35
2911.65:575:33
3011.65:585:31

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.72 kWh/m².

For context, solar energy here swings from a low near 1.12 kWh/m² to a high of 6.03 kWh/m² in July across the year — September's 3.72 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.4Bright
34.3Bright
44.3Bright
54.2Bright
64.2Bright
74.1Bright
84.1Bright
94.0Bright
104.0Moderate
113.9Moderate
123.9Moderate
133.8Moderate
143.8Moderate
153.7Moderate
163.7Moderate
173.6Moderate
183.6Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.4Moderate
233.4Moderate
243.4Moderate
253.3Moderate
263.3Moderate
273.3Moderate
283.2Moderate
293.2Moderate
303.1Moderate
Planning a trip in September

Is September a good time to visit Bosanska Krupa?

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

6.5
Sightseeing
3rd-best month of the year
4.4
Beach & pool
4th-best month of the year

September is a reasonable time to visit Bosanska Krupa for sightseeing.

What to pack for Bosanska Krupa in September

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

In September, Bosanska Krupa sees daytime highs around 22°C and nights near 11°C. Worth packing: rain gear. About 11 days see rain.

rain gear

UV index in Bosanska Krupa in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bosanska Krupa peaks around July 14 at about 9 (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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighHighVery highModerateLowJul 14UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar5Moderate
Apr7Very high
May6High
Jun9Very high
Jul9Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Bosanska Krupa in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Bosanska Krupa is worst in March — around 16 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodMar 2216 µg/m³Dec 1110 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb13Moderate
Mar16Moderate
Apr16Moderate
May14Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep10Good
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Bosanska Krupa?

Bosanska Krupa sits at 44.9°N, 16.2°E, 153 m above sea level, in Bosnia and Herzegovina. The nearest listed city is Cazin, 19 km away.

CazinBihaćVelika KladušaPrijedorBanja Luka

Topography around Bosanska Krupa

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

Within 3 km, the terrain around Bosanska Krupa has significant variations in elevation — a maximum elevation change of 261 m around an average of 264 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,077 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,885 m.

The land around Bosanska Krupa is covered by trees (66%) and grassland (24%) within 3 km, trees (72%) and grassland (22%) within 16 km, and trees (74%) and grassland (21%) within 80 km.

3 km
261 m
16 km
1,077 m
80 km
1,885 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Cazin 19 km · Bihać 23 km · Velika Kladuša 43 km · Prijedor 46 km · Sisak 67 km · Karlovac 83 km · Banja Luka 84 km · Velika Gorica 92 km

Bosnia and Herzegovina travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 40% of US
price level, 2025
GDP per capita
$10,382
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
86%
of population, 2024
Homicide rate
1.2
per 100k, 2023
Road deaths
13.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 591
Religion
Muslim 51%Orthodox 31%Roman Catholic 15%other 1%

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 Bosanska Krupa (44.8825°, 16.1514°, elevation 153 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).