Wieluń weather in September

In September, Wieluń sees average daytime highs of 19°C and overnight lows near 10°C, with 58 mm of rain across 10 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 17°C by the end. The sky is clear or mostly clear about 25% 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 24 min by month's end. Set against the rest of the year, September is Wieluń's 4th-clearest and 8th-windiest month. For the whole year in context, see Wieluń's year-round climate.

Daytime high
19°
4th warmest
Overnight low
10°
9th coldest
Rainfall
58 mm
10 wet days
Daylight
12 h 24 min
5:29 AM – 5:52 PM
Cloud cover
63%
4th clearest
Wind
13 km/h
8th windiest
Solar energy
3.1 kWh/m²
Travel score
6.0
out of 10

Wieluń is city of Poland.

Air quality
Good
PM10 28 µg/m³ · 2019
Density
1,280/km²
people per km²
Founded
1217

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 17°C by the end.

A typical September day in Wieluń reaches about 19°C in the afternoon and slips back to 10°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)
12212
22212
32112
42111
52111
62111
72111
82011
92011
102011
112010
122010
132010
141910
151910
161910
17199
18199
19199
20189
21189
22189
23189
24189
25178
26178
27178
28178
29178
30178

How September really feels in Wieluń

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.

Wieluń 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 / -3°4110.75.88.20.0
Feb / -3°379.25.19.60.0
Mar / 4810.93.311.51.1
Apr14° / 409.30.913.54.1
May19° / 6511.6015.35.9
Jun22° / 12°7212.5016.36.2
Jul25° / 14°9213.4015.96.4
Aug24° / 14°6210.7014.46.7
Sep19° / 10°5810012.46.0
Oct13° / 478.90.210.43.7
Nov / 418.82.18.71.0
Dec / -2°4310.14.67.70.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34357
44357
54456
64456
74357
84357
94258
104258
114258
124258
134159
144060
154060
164060
174159
184159
194060
203961
213961
223961
233961
243961
253961
263961
273862
283862
293862
303763

Chance of precipitation in September

Any precipitation

Wieluń gets around 58 mm of rain over 10 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 33% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
436
536
636
736
836
935
1034
1134
1233
1333
1432
1532
1631
1731
1831
1931
2030
2130
2230
2330
2431
2531
2631
2731
2832
2932
3032

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 84% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
172235
273234
374224
474224
576213
676213
777203
878202
979192
1080182
1181172
1281172
1382162
1484151
1585141
1686131
1786131
1887121
1988111
2089101
219091
229190
239280
249370
259370
269370
279460
289460
299460
309460

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 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
113light breeze
213light breeze
313light breeze
413light 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 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 120 minutes over September. Sunrise moves from 5:04 AM to 5:52 AM, and sunset from 6:27 PM to 5:18 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:046:27
213.35:066:24
313.25:076:22
413.25:096:20
513.15:116:18
613.05:126:15
713.05:146:13
812.95:156:11
912.95:176:08
1012.85:196:06
1112.75:206:03
1212.75:226:01
1312.65:245:59
1412.55:255:56
1512.55:275:54
1612.45:295:52
1712.35:305:49
1812.35:325:47
1912.25:335:44
2012.15:355:42
2112.15:375:40
2212.05:385:37
2311.95:405:35
2411.85:425:33
2511.85:435:30
2611.75:455:28
2711.65:475:26
2811.65:485:23
2911.55:505:21
3011.45:525:18

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 0.64 kWh/m² to a high of 5.41 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
83.4Moderate
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
242.8Moderate
252.7Moderate
262.7Moderate
272.6Moderate
282.6Moderate
292.5Moderate
302.5Moderate
Planning a trip in September

Is September a good time to visit Wieluń?

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

6.0
Sightseeing
4th-best month of the year
2.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Wieluń for sightseeing.

What to pack for Wieluń in September

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

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

rain gear

UV index in Wieluń 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 Wieluń peaks around June 19 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 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 19UV 7Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low

Air quality in Wieluń 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 Wieluń is worst in June — around 17 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJun 1717 µg/m³Dec 1610 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar16Moderate
Apr16Moderate
May16Moderate
Jun17Moderate
Jul16Moderate
Aug16Moderate
Sep14Moderate
Oct12Good
Nov12Good
Dec10Good
Location & terrain

Where is Wieluń?

Wieluń sits at 51.2°N, 18.6°E, 180 m above sea level, in Poland. The nearest listed city is Kluczbork, 37 km away.

SieradzZduńska WolaŁaskBełchatówCzęstochowaNamysłówLubliniec

Topography around Wieluń

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

Within 3 km, the terrain around Wieluń has only modest variations in elevation — a maximum elevation change of 44 m around an average of 186 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 113 m; within 80 km, significant variations in elevation — a maximum elevation change of 507 m.

The land around Wieluń is covered by cropland (50%) and artificial surfaces (20%) within 3 km, cropland (55%) and trees (30%) within 16 km, and cropland (43%) and trees (39%) within 80 km.

3 km
44 m
16 km
113 m
80 km
507 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Kluczbork 37 km · Sieradz 43 km · Zduńska Wola 49 km · Łask 57 km · Bełchatów 57 km · Częstochowa 61 km · Namysłów 61 km · Lubliniec 62 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 Wieluń (51.221°, 18.5696°, elevation 180 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).