Krosno weather in September

In September, Krosno sees average daytime highs of 19°C and overnight lows near 9°C, with 77 mm of rain across 11 wet days and about 12.4 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 16°C by the end. The sky is clear or mostly clear about 27% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Krosno's 4th-clearest and 8th-windiest month. For the whole year in context, see Krosno's year-round climate.

Daytime high
19°
5th warmest
Overnight low
9th coldest
Rainfall
77 mm
11 wet days
Daylight
12 h 24 min
5:16 AM – 5:38 PM
Cloud cover
62%
4th clearest
Wind
11 km/h
8th windiest
Solar energy
3.16 kWh/m²
Travel score
5.7
out of 10

Krosno is city with powiat rights of Poland.

Air quality
Elevated
PM2.5 20.5 µg/m³ · 2019
Density
1,099/km²
people per km²
Founded
1342

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 21°C in the first days to 16°C by the end.

A typical September day in Krosno reaches about 19°C in the afternoon and slips back to 9°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 24°C. Set against its neighbours, September runs about 5°C cooler than August and about 6°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12111
22111
32111
42111
52011
62011
72010
82010
92010
102010
111910
121910
131910
14199
15199
16189
17189
18189
19189
20189
21178
22178
23178
24178
25178
26178
27168
28168
29168
30167

How September really feels in Krosno

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.

Krosno weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -5°4911.88.88.40.0
Feb / -4°4911.48.49.80.0
Mar / -0°5111.54.911.50.9
Apr14° / 6011.41.313.43.8
May19° / 9314.5015.15.4
Jun22° / 12°9013.40166.0
Jul24° / 14°10914.9015.76.2
Aug24° / 13°7511.6014.26.7
Sep19° / 7711012.45.7
Oct13° / 6210.30.410.53.5
Nov / 5210.63.78.80.8
Dec / -3°4811.27.180.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14852
24852
34753
44753
54654
64654
74555
84456
94456
104357
114357
124258
134159
144159
154159
164060
173961
183961
193961
203961
213961
223961
233961
243961
253961
264060
274060
284060
294159
304159

Chance of precipitation in September

Any precipitation

Krosno gets around 77 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
637
737
837
937
1038
1138
1238
1338
1437
1537
1637
1737
1837
1937
2037
2137
2236
2336
2436
2536
2635
2735
2835
2934
3034

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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
166268
267258
369247
470246
571236
672235
773225
875214
975214
1077203
1177203
1278193
1380182
1480182
1581172
1682162
1784151
1884151
1985141
2086131
2187121
2288111
2389101
2490100
259190
269190
279280
289280
299280
309370

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over September. Sunrise moves from 4:54 AM to 5:38 AM, and sunset from 6:12 PM to 5:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.34:546:12
213.24:556:10
313.24:576:07
413.14:586:05
513.15:006:03
613.05:016:01
712.95:035:58
812.95:045:56
912.85:065:54
1012.75:075:52
1112.75:095:49
1212.65:105:47
1312.65:125:45
1412.55:135:43
1512.45:155:40
1612.45:165:38
1712.35:185:36
1812.25:195:34
1912.25:215:31
2012.15:225:29
2112.05:245:27
2212.05:255:25
2311.95:275:22
2411.95:295:20
2511.85:305:18
2611.75:325:16
2711.75:335:13
2811.65:355:11
2911.55:365:09
3011.55:385:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.16 kWh/m².

For context, solar energy here swings from a low near 0.73 kWh/m² to a high of 5.34 kWh/m² in June across the year — September's 3.16 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.4Moderate
113.4Moderate
123.3Moderate
133.3Moderate
143.3Moderate
153.2Moderate
163.1Moderate
173.1Moderate
183.0Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.8Moderate
242.8Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.6Moderate
302.5Moderate
Planning a trip in September

Is September a good time to visit Krosno?

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

5.7
Sightseeing
4th-best month of the year
2.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Krosno for sightseeing.

What to pack for Krosno in September

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

In September, Krosno sees daytime highs around 19°C and nights near 9°C. Worth packing: rain gear. About 11 days see rain.

rain gear

UV index in Krosno in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Krosno peaks around June 23 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 highHighModerateLowJun 23UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May6High
Jun7Very high
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Krosno 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 Krosno is worst in June — around 27 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Krosno's WHO annual average of 20.5 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1927 µg/m³Dec 1613 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar24Moderate
Apr24Moderate
May24Moderate
Jun27Moderate
Jul26Moderate
Aug24Moderate
Sep19Moderate
Oct16Moderate
Nov16Moderate
Dec13Moderate
Location & terrain

Where is Krosno?

Krosno sits at 49.7°N, 21.8°E, 278 m above sea level, in Poland. The nearest listed city is Jasło, 22 km away.

RopczyceRzeszówGorliceDębicaŁańcutBardejov

Topography around Krosno

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

Within 3 km, the terrain around Krosno has only modest variations in elevation — a maximum elevation change of 79 m around an average of 280 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 384 m; within 80 km, large variations in elevation — a maximum elevation change of 1,098 m.

The land around Krosno is covered by trees (28%), grassland (27%) and artificial surfaces (24%) within 3 km, trees (44%), cropland (33%) and grassland (20%) within 16 km, and trees (61%) and cropland (21%) within 80 km.

3 km
79 m
16 km
384 m
80 km
1,098 m
treesgrasslandcroplandartificial surfaces
September weather nearby: Jasło 22 km · Sanok 35 km · Ropczyce 42 km · Rzeszów 42 km · Gorlice 44 km · Dębica 48 km · Łańcut 54 km · Bardejov 57 km

Poland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 52% of US
price level, 2025
GDP per capita
$28,420
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
9.4
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 600
Religion
Roman Catholic 71%refused to answer 21%no religion 7%

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 Krosno (49.6887°, 21.7706°, elevation 278 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).