Wieleń climate — normals and trends
Wieleń (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.5 °C and it receives 616 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 (18.3 °C on average) and the coldest is January (-1.4 °C). Rainfall peaks in July.
Wieleń averages 91 frost days, 4 hot days (≥ 30 °C) and 128 rainy days per year.
Wieleń has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 110 to 72 per year over the period.
The hottest day of the period reached 36.9 °C (on 10 August 1992) and the coldest -28.4 °C (on 26 January 1942).
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
WieleńGreater Poland
- coords
- 52.89°, 16.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.5°C
Average daily high
12.1°C
Average daily low
5.0°C
Annual rainfall
616mm
Sunshine / day
7.1h
Mean relative humidity
78%
Average peak wind
17.6km/h
Seasonal range
19.7°C
Frost days (< 0 °C)
91 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
47.8 cm
Average feels-like high
9.4 °C
Average feels-like low
1.9 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.45 · 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
36.9 °C
10 August 1992
Coldest day
-28.4 °C
26 January 1942
Wettest day
62 mm
31 July 1941
Windiest day
51.8 km/h
24 November 1984
Strongest gust
114.1 km/h
24 November 1984
Hottest feels-like
38.6 °C
11 July 1959
Coldest feels-like
-34.2 °C
26 January 1942
Snowiest day
16.8 cm
3 March 1965
Sunniest day
16.0 h
7 June 1940
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 | 4.0 °C | +3.3 °C | 61 mm | +17 mm |
| Feb | 3.4 °C | +1.2 °C | 19 mm | -19 mm |
| Mar | 11.4 °C | +4.9 °C | 18 mm | -25 mm |
| Apr | 17.0 °C | +4.5 °C | 14 mm | -29 mm |
| May | 17.2 °C | -0.6 °C | 41 mm | -15 mm |
| Jun | 23.5 °C | +2.3 °C | 61 mm | -3 mm |
| Jul | 23.3 °C | +0.6 °C | 101 mm | +21 mm |
| Aug | 23.4 °C | +1.0 °C | 60 mm | -4 mm |
| Sep | 20.2 °C | +2.0 °C | 49 mm | +0 mm |
| Oct | 12.1 °C | -0.3 °C | 62 mm | +19 mm |
| Nov | 6.8 °C | +0.7 °C | 30 mm | -15 mm |
| Dec | 4.4 °C | +2.0 °C | 19 mm | -28 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 Wieleń?
Wieleń has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.5 °C and it receives 616 mm of precipitation per year.
What is the hottest day ever recorded in Wieleń?
The hottest day measured in Wieleń between 1940 and 2025 was 10 August 1992, reaching 36.9 °C.
What is the coldest day in Wieleń?
The coldest day measured in Wieleń between 1940 and 2025 was 26 January 1942, at -28.4 °C.
Does it snow in Wieleń?
Yes. Wieleń gets on average 47.8 cm of snow per year and has around 91 frost days.
Has the climate of Wieleń warmed?
Yes: Wieleń warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Wieleń?
The wettest day measured in Wieleń between 1940 and 2025 was 31 July 1941, with 62 mm of rain in 24 hours.
What was the windiest day in Wieleń?
The windiest day measured in Wieleń between 1940 and 2025 was 24 November 1984, with winds reaching 51.8 km/h.
What is the warmest month in Wieleń?
The warmest month in Wieleń is July (18.3 °C on average); the coldest is January (-1.4 °C).
How much does it rain in Wieleń?
Wieleń receives on average 616 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Wieleń?
Wieleń gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.
What is the biggest single-day snowfall in Wieleń?
The heaviest 24-hour snowfall measured in Wieleń between 1940 and 2025 was 3 March 1965, with 16.8 cm.
Are there tropical nights in Wieleń?
Yes: Wieleń has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Wieleń?
In Wieleń, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 11 July 1959, and the lowest was -34.2 °C on 26 January 1942.
Compare Wieleń with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Wieleń