Wieluń climate — normals and trends
Wieluń (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.7 °C and it receives 661 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (18.8 °C on average) and the coldest is January (-2.0 °C). Rainfall peaks in July.
Wieluń averages 95 frost days, 6 hot days (≥ 30 °C) and 132 rainy days per year.
Wieluń has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 114 to 76 per year over the period.
The hottest day of the period reached 37.0 °C (on 22 August 1943) and the coldest -29.4 °C (on 7 February 1947).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
WieluńŁódź Voivodeship
- coords
- 51.22°, 18.57°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
12.4°C
Average daily low
4.9°C
Annual rainfall
661mm
Sunshine / day
7.5h
Mean relative humidity
77%
Average peak wind
19.2km/h
Seasonal range
20.8°C
Frost days (< 0 °C)
95 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
58.8 cm
Average feels-like high
9.6 °C
Average feels-like low
1.7 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.48 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
37.0 °C
22 August 1943
Coldest day
-29.4 °C
7 February 1947
Wettest day
79 mm
6 July 1997
Windiest day
54.7 km/h
19 January 2007
Strongest gust
114.8 km/h
20 January 1986
Hottest feels-like
38.0 °C
5 July 1957
Coldest feels-like
-34.9 °C
7 February 1947
Snowiest day
12.3 cm
3 April 1970
Sunniest day
16.0 h
24 June 2008
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 5.0 °C | +4.7 °C | 48 mm | +7 mm |
| Feb | 3.5 °C | +1.5 °C | 11 mm | -29 mm |
| Mar | 11.9 °C | +5.2 °C | 31 mm | -11 mm |
| Apr | 16.9 °C | +3.9 °C | 30 mm | -16 mm |
| May | 16.5 °C | -1.7 °C | 52 mm | -13 mm |
| Jun | 23.7 °C | +1.9 °C | 69 mm | -5 mm |
| Jul | 24.1 °C | +0.6 °C | 147 mm | +57 mm |
| Aug | 24.4 °C | +1.1 °C | 39 mm | -31 mm |
| Sep | 20.3 °C | +1.5 °C | 96 mm | +42 mm |
| Oct | 12.0 °C | -1.0 °C | 73 mm | +29 mm |
| Nov | 6.9 °C | +0.4 °C | 63 mm | +15 mm |
| Dec | 4.2 °C | +2.0 °C | 15 mm | -31 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Wieluń?
Wieluń has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 661 mm of precipitation per year.
What is the hottest day ever recorded in Wieluń?
The hottest day measured in Wieluń between 1940 and 2025 was 22 August 1943, reaching 37.0 °C.
What is the coldest day in Wieluń?
The coldest day measured in Wieluń between 1940 and 2025 was 7 February 1947, at -29.4 °C.
Does it snow in Wieluń?
Yes. Wieluń gets on average 58.8 cm of snow per year and has around 95 frost days.
Has the climate of Wieluń warmed?
Yes: Wieluń warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wieluń?
The wettest day measured in Wieluń between 1940 and 2025 was 6 July 1997, with 79 mm of rain in 24 hours.
What was the windiest day in Wieluń?
The windiest day measured in Wieluń between 1940 and 2025 was 19 January 2007, with winds reaching 54.7 km/h.
What is the warmest month in Wieluń?
The warmest month in Wieluń is July (18.8 °C on average); the coldest is January (-2.0 °C).
How much does it rain in Wieluń?
Wieluń receives on average 661 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Wieluń?
Wieluń gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Wieluń?
The heaviest 24-hour snowfall measured in Wieluń between 1940 and 2025 was 3 April 1970, with 12.3 cm.
Are there tropical nights in Wieluń?
Yes: Wieluń has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wieluń?
In Wieluń, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 5 July 1957, and the lowest was -34.9 °C on 7 February 1947.
Compare Wieluń with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wieluń