Radziejów climate — normals and trends
Radziejów (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.4 °C and it receives 596 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 (18.6 °C on average) and the coldest is January (-1.9 °C). Rainfall peaks in July.
Radziejów averages 94 frost days, 4 hot days (≥ 30 °C) and 126 rainy days per year.
Radziejów has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 113 to 75 per year over the period.
The hottest day of the period reached 38.3 °C (on 22 August 1943) and the coldest -30.1 °C (on 30 January 1987).
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
RadziejówKujawsko-Pomorskie
- coords
- 52.62°, 18.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.4°C
Average daily high
12.0°C
Average daily low
4.9°C
Annual rainfall
596mm
Sunshine / day
7.4h
Mean relative humidity
79%
Average peak wind
18.9km/h
Seasonal range
20.5°C
Frost days (< 0 °C)
94 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
49.9 cm
Average feels-like high
9.2 °C
Average feels-like low
1.7 °C
Average peak gust
36.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.44 · 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
38.3 °C
22 August 1943
Coldest day
-30.1 °C
30 January 1987
Wettest day
66 mm
10 July 1980
Windiest day
56.6 km/h
20 January 1986
Strongest gust
111.6 km/h
13 November 1972
Hottest feels-like
38.1 °C
11 July 1959
Coldest feels-like
-35.2 °C
30 January 1987
Snowiest day
15.0 cm
4 April 1970
Sunniest day
16.0 h
24 June 1942
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 | 4.6 °C | +4.4 °C | 49 mm | +11 mm |
| Feb | 2.9 °C | +1.2 °C | 11 mm | -24 mm |
| Mar | 11.5 °C | +5.3 °C | 27 mm | -11 mm |
| Apr | 16.7 °C | +4.2 °C | 26 mm | -15 mm |
| May | 16.2 °C | -1.5 °C | 62 mm | +5 mm |
| Jun | 22.9 °C | +1.7 °C | 55 mm | -9 mm |
| Jul | 23.6 °C | +0.6 °C | 146 mm | +63 mm |
| Aug | 23.5 °C | +0.7 °C | 56 mm | -8 mm |
| Sep | 20.3 °C | +2.0 °C | 60 mm | +12 mm |
| Oct | 12.0 °C | -0.5 °C | 68 mm | +27 mm |
| Nov | 6.5 °C | +0.5 °C | 50 mm | +6 mm |
| Dec | 3.9 °C | +1.9 °C | 12 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 Radziejów?
Radziejów has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.4 °C and it receives 596 mm of precipitation per year.
What is the hottest day ever recorded in Radziejów?
The hottest day measured in Radziejów between 1940 and 2025 was 22 August 1943, reaching 38.3 °C.
What is the coldest day in Radziejów?
The coldest day measured in Radziejów between 1940 and 2025 was 30 January 1987, at -30.1 °C.
Does it snow in Radziejów?
Yes. Radziejów gets on average 49.9 cm of snow per year and has around 94 frost days.
Has the climate of Radziejów warmed?
Yes: Radziejów warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Radziejów?
The wettest day measured in Radziejów between 1940 and 2025 was 10 July 1980, with 66 mm of rain in 24 hours.
What was the windiest day in Radziejów?
The windiest day measured in Radziejów between 1940 and 2025 was 20 January 1986, with winds reaching 56.6 km/h.
What is the warmest month in Radziejów?
The warmest month in Radziejów is July (18.6 °C on average); the coldest is January (-1.9 °C).
How much does it rain in Radziejów?
Radziejów receives on average 596 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Radziejów?
Radziejów gets on average 7.4 hours of sunshine per day, roughly 2,701 hours per year over 1940-2025.
What is the biggest single-day snowfall in Radziejów?
The heaviest 24-hour snowfall measured in Radziejów between 1940 and 2025 was 4 April 1970, with 15.0 cm.
Are there tropical nights in Radziejów?
Yes: Radziejów has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Radziejów?
In Radziejów, between 1940 and 2025, the highest apparent temperature reached 38.1 °C on 11 July 1959, and the lowest was -35.2 °C on 30 January 1987.
Compare Radziejów with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Radziejów