Bieruń climate — normals and trends
Bieruń (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 851 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 (18.4 °C on average) and the coldest is January (-2.5 °C). Rainfall peaks in July.
Bieruń averages 97 frost days, 4 hot days (≥ 30 °C) and 152 rainy days per year.
Bieruń has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 118 to 76 per year over the period.
The hottest day of the period reached 36.5 °C (on 8 August 2013) and the coldest -28.3 °C (on 11 January 1940).
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
BieruńSilesia
- coords
- 50.09°, 19.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.5°C
Average daily high
12.3°C
Average daily low
4.7°C
Annual rainfall
851mm
Sunshine / day
7.5h
Mean relative humidity
79%
Average peak wind
17.1km/h
Seasonal range
20.9°C
Frost days (< 0 °C)
97 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
152 d/yr
Annual snowfall
90.4 cm
Average feels-like high
9.9 °C
Average feels-like low
1.8 °C
Average peak gust
33.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.56 · 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
36.5 °C
8 August 2013
Coldest day
-28.3 °C
11 January 1940
Wettest day
75 mm
8 July 1997
Windiest day
53.5 km/h
2 March 1956
Strongest gust
110.5 km/h
19 January 2007
Hottest feels-like
40.1 °C
8 July 1957
Coldest feels-like
-33.6 °C
11 January 1940
Snowiest day
19.5 cm
3 April 1970
Sunniest day
15.6 h
4 July 2019
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 | 5.2 °C | +5.2 °C | 55 mm | +2 mm |
| Feb | 4.2 °C | +2.2 °C | 23 mm | -29 mm |
| Mar | 12.3 °C | +5.3 °C | 52 mm | -2 mm |
| Apr | 16.5 °C | +3.3 °C | 42 mm | -21 mm |
| May | 16.3 °C | -1.7 °C | 82 mm | -8 mm |
| Jun | 23.8 °C | +2.6 °C | 76 mm | -23 mm |
| Jul | 23.9 °C | +1.0 °C | 167 mm | +58 mm |
| Aug | 24.8 °C | +1.9 °C | 45 mm | -43 mm |
| Sep | 20.2 °C | +1.5 °C | 108 mm | +37 mm |
| Oct | 12.5 °C | -0.9 °C | 89 mm | +33 mm |
| Nov | 7.6 °C | +0.8 °C | 85 mm | +25 mm |
| Dec | 4.3 °C | +2.3 °C | 13 mm | -44 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 Bieruń?
Bieruń has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.5 °C and it receives 851 mm of precipitation per year.
What is the hottest day ever recorded in Bieruń?
The hottest day measured in Bieruń between 1940 and 2025 was 8 August 2013, reaching 36.5 °C.
What is the coldest day in Bieruń?
The coldest day measured in Bieruń between 1940 and 2025 was 11 January 1940, at -28.3 °C.
Does it snow in Bieruń?
Yes. Bieruń gets on average 90.4 cm of snow per year and has around 97 frost days.
Has the climate of Bieruń warmed?
Yes: Bieruń warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bieruń?
The wettest day measured in Bieruń between 1940 and 2025 was 8 July 1997, with 75 mm of rain in 24 hours.
What was the windiest day in Bieruń?
The windiest day measured in Bieruń between 1940 and 2025 was 2 March 1956, with winds reaching 53.5 km/h.
What is the warmest month in Bieruń?
The warmest month in Bieruń is July (18.4 °C on average); the coldest is January (-2.5 °C).
How much does it rain in Bieruń?
Bieruń receives on average 851 mm of precipitation per year, spread over about 152 rainy days.
Is it sunny in Bieruń?
Bieruń 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 Bieruń?
The heaviest 24-hour snowfall measured in Bieruń between 1940 and 2025 was 3 April 1970, with 19.5 cm.
Are there tropical nights in Bieruń?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bieruń.
What was the most extreme apparent temperature in Bieruń?
In Bieruń, between 1940 and 2025, the highest apparent temperature reached 40.1 °C on 8 July 1957, and the lowest was -33.6 °C on 11 January 1940.
Compare Bieruń with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bieruń