Kielce weather in September

In September, Kielce sees average daytime highs of 19°C and overnight lows near 9°C, with 63 mm of rain across 10.2 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 5th-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 24% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is Kielce's 4th-clearest and 8th-windiest month. For the whole year in context, see Kielce's year-round climate.

Daytime high
19°
4th warmest
Overnight low
9th coldest
Rainfall
63 mm
10.2 wet days
Daylight
12 h 24 min
5:20 AM – 5:43 PM
Cloud cover
63%
4th clearest
Wind
13 km/h
8th windiest
Solar energy
3.1 kWh/m²
Travel score
5.8
out of 10

Kielce is city and capital of the Świętokrzyskie Voivodeship in south-central Poland.

Air quality
Elevated
PM2.5 18.7 µg/m³ · 2019
Density
1,766/km²
people per km²
Founded
1050

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 Kielce 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 25°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
52111
62011
72011
82010
92010
102010
111910
121910
131910
14199
15199
16199
17189
18189
19189
20189
21188
22178
23178
24178
25178
26178
27178
28167
29167
30167

How September really feels in Kielce

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.

Kielce weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -4°3910.26.98.20.0
Feb / -4°369.25.99.70.0
Mar / -1°4410.53.711.50.9
Apr14° / 5010.31.313.53.8
May19° / 7413.1015.25.6
Jun22° / 12°7712.9016.26.1
Jul24° / 14°9013.6015.86.4
Aug24° / 13°6510.4014.36.8
Sep19° / 6310.2012.45.8
Oct13° / 4990.510.43.5
Nov / 399.52.58.70.8
Dec / -3°389.35.17.80.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% 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 59%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14654
24456
34456
44456
54456
64357
74357
84258
94258
104258
114159
124060
134060
144159
154060
164060
174060
184060
194060
204159
213961
223961
233961
243961
253961
263961
273862
283862
293862
303763

Chance of precipitation in September

Any precipitation

Kielce gets around 63 mm of rain over 10.2 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 34% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
135
235
335
435
535
635
735
835
934
1034
1134
1234
1333
1433
1533
1633
1733
1833
1933
2033
2133
2233
2333
2433
2533
2633
2733
2833
2933
3033

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
171245
272244
374233
474233
574233
676222
776222
876222
978211
1078211
1179201
1280191
1380191
1481181
1582171
1684160
1785150
1886140
1987130
2088120
2189110
2290100
239190
249190
259280
269280
279280
289370
299370
309370

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 24 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 114 minutes over September. Sunrise moves from 4:56 AM to 5:43 AM, and sunset from 6:18 PM to 5:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.44:566:18
213.34:586:16
313.25:006:13
413.25:016:11
513.15:036:09
613.05:046:07
713.05:066:04
812.95:086:02
912.85:096:00
1012.85:115:57
1112.75:125:55
1212.65:145:53
1312.65:165:50
1412.55:175:48
1512.45:195:46
1612.45:205:43
1712.35:225:41
1812.25:245:39
1912.25:255:36
2012.15:275:34
2112.05:285:31
2212.05:305:29
2311.95:325:27
2411.95:335:24
2511.85:355:22
2611.75:375:20
2711.75:385:17
2811.65:405:15
2911.55:425:13
3011.55:435:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.1 kWh/m².

For context, solar energy here swings from a low near 0.67 kWh/m² to a high of 5.45 kWh/m² in June across the year — September's 3.1 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.7Moderate
43.6Moderate
53.6Moderate
63.5Moderate
73.5Moderate
83.5Moderate
93.4Moderate
103.4Moderate
113.3Moderate
123.3Moderate
133.2Moderate
143.2Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.0Moderate
193.0Moderate
202.9Moderate
212.9Moderate
222.8Moderate
232.8Moderate
242.7Moderate
252.7Moderate
262.6Moderate
272.6Moderate
282.6Moderate
292.5Moderate
302.5Moderate
Planning a trip in September

Is September a good time to visit Kielce?

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

5.8
Sightseeing
4th-best month of the year
2.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Kielce for sightseeing.

What to pack for Kielce in September

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

In September, Kielce sees daytime highs around 19°C and nights near 9°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Kielce 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 Kielce peaks around June 23 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 7Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun7High
Jul7High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Kielce 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 Kielce is worst in June — around 23 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (December, 13 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Kielce's WHO annual average of 18.7 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1723 µg/m³Dec 1713 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar22Moderate
Apr22Moderate
May22Moderate
Jun23Moderate
Jul22Moderate
Aug21Moderate
Sep18Moderate
Oct15Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Kielce?

Kielce sits at 50.9°N, 20.6°E, 267 m above sea level, in Poland. The nearest listed city is Skarżysko-Kamienna, 32 km away.

KońskieBusko-ZdrójStaszówOstrowiec ŚwiętokrzyskiOpoczno

Topography around Kielce

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

Within 3 km, the terrain around Kielce has only modest variations in elevation — a maximum elevation change of 95 m around an average of 281 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 298 m; within 80 km, significant variations in elevation — a maximum elevation change of 493 m.

The land around Kielce is covered by artificial surfaces (55%) and trees (30%) within 3 km, trees (51%) and grassland (30%) within 16 km, and trees (42%) and cropland (37%) within 80 km.

3 km
95 m
16 km
298 m
80 km
493 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Skarżysko-Kamienna 32 km · Jędrzejów 34 km · Starachowice 36 km · Końskie 39 km · Busko-Zdrój 45 km · Staszów 51 km · Ostrowiec Świętokrzyski 54 km · Opoczno 61 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 Kielce (50.8703°, 20.6275°, elevation 267 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).