Włocławek weather in September

In September, Włocławek sees average daytime highs of 18°C and overnight lows near 10°C, with 51 mm of rain across 8.8 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 21% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Włocławek's 6th-clearest and 8th-windiest month. For the whole year in context, see Włocławek's year-round climate.

Daytime high
18°
4th warmest
Overnight low
10°
9th coldest
Rainfall
51 mm
8.8 wet days
Daylight
12 h 24 min
5:26 AM – 5:50 PM
Cloud cover
65%
6th clearest
Wind
13 km/h
8th windiest
Solar energy
2.95 kWh/m²
Travel score
5.9
out of 10

Włocławek is city with powiat rights of Poland.

Air quality
Elevated
PM2.5 17.1 µg/m³ · 2019
Density
1,427/km²
people per km²
Founded
~950 CE

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 Włocławek reaches about 18°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 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)
12112
22112
32112
42011
52011
62011
72011
82011
92011
101911
111910
121910
131910
141910
151910
161810
17189
18189
19189
20189
21189
22179
23179
24179
25178
26178
27168
28168
29168
30168

How September really feels in Włocławek

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.

Włocławek 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°399.7580.0
Feb / -3°349.14.69.50.0
Mar / -0°41102.811.50.9
Apr13° / 378.80.613.63.9
May18° / 6111.4015.55.8
Jun21° / 12°6011.3016.56.2
Jul24° / 14°8012016.16.6
Aug23° / 14°5810.2014.56.8
Sep18° / 10°518.8012.45.9
Oct12° / 4390.110.33.4
Nov / 379.21.78.50.7
Dec / -2°42104.17.50.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% 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 62%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14060
23961
33961
43862
53862
63862
73763
83763
93763
103862
113862
123862
133862
143862
153862
163862
173862
183862
193862
203862
213862
223862
233862
243961
253862
263862
273862
283763
293664
303664

Chance of precipitation in September

Any precipitation

Włocławek gets around 51 mm of rain over 8.8 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 30% and peaks near 34% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
134
234
334
434
534
634
734
833
933
1033
1132
1232
1331
1430
1529
1629
1728
1827
1927
2026
2126
2226
2326
2427
2527
2628
2728
2829
2929
3030

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 (%)Muggy (%)
1662671
2672670
3692560
4702460
5702460
6722350
7732250
8742150
9762040
10771940
11791740
12811630
13821530
14821530
15831430
16851320
17861220
18871120
19891010
20891010
2190910
2290910
2391810
2492800
2593700
2693700
2793700
2893700
2993700
3093700

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
512light breeze
612light breeze
712light 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 30 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 126 minutes over September. Sunrise moves from 5:00 AM to 5:50 AM, and sunset from 6:27 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:006:27
213.45:026:25
313.35:036:22
413.25:056:20
513.25:076:17
613.15:096:15
713.05:106:12
813.05:126:10
912.95:146:08
1012.85:156:05
1112.85:176:03
1212.75:196:00
1312.65:215:58
1412.55:225:55
1512.55:245:53
1612.45:265:50
1712.35:285:48
1812.35:295:45
1912.25:315:43
2012.15:335:40
2112.15:355:38
2212.05:365:35
2311.95:385:33
2411.85:405:30
2511.85:425:28
2611.75:435:25
2711.65:455:23
2811.65:475:21
2911.55:495:18
3011.45:505:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.95 kWh/m².

For context, solar energy here swings from a low near 0.51 kWh/m² to a high of 5.43 kWh/m² in June across the year — September's 2.95 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.5Moderate
43.5Moderate
53.4Moderate
63.4Moderate
73.3Moderate
83.3Moderate
93.2Moderate
103.2Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.0Moderate
153.0Moderate
163.0Moderate
172.9Moderate
182.9Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.7Moderate
232.7Moderate
242.6Moderate
252.6Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.4Moderate
302.4Moderate
Planning a trip in September

Is September a good time to visit Włocławek?

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

5.9
Sightseeing
4th-best month of the year
2.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Włocławek for sightseeing.

What to pack for Włocławek in September

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

In September, Włocławek sees daytime highs around 18°C and nights near 10°C. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Włocławek 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 Włocławek peaks around June 18 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 18UV 6Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Air quality in Włocławek 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 Włocławek is worst in June — around 21 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (December, 12 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Włocławek's WHO annual average of 17.1 µg/m³.

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 1621 µg/m³Dec 1512 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb16Moderate
Mar21Moderate
Apr21Moderate
May19Moderate
Jun21Moderate
Jul19Moderate
Aug18Moderate
Sep16Moderate
Oct14Moderate
Nov14Moderate
Dec12Good
Location & terrain

Where is Włocławek?

Włocławek sits at 52.6°N, 19.1°E, 58 m above sea level, in Poland. The nearest listed city is Gostynin, 36 km away.

PłockSierpcKutnoTorunRypinInowrocławKoło

Topography around Włocławek

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

Within 3 km, the terrain around Włocławek has only modest variations in elevation — a maximum elevation change of 106 m around an average of 66 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 110 m; within 80 km, only modest variations in elevation — a maximum elevation change of 191 m.

The land around Włocławek is covered by trees (56%) and artificial surfaces (29%) within 3 km, cropland (42%) and trees (37%) within 16 km, and cropland (61%) and trees (25%) within 80 km.

3 km
106 m
16 km
110 m
80 km
191 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Gostynin 36 km · Płock 45 km · Sierpc 47 km · Kutno 51 km · Torun 51 km · Rypin 52 km · Inowrocław 57 km · Koło 58 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 Włocławek (52.6482°, 19.0678°, elevation 58 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).