Radzymin climate — normals and trends
Radzymin (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.2 °C and it receives 635 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 (-2.8 °C). Rainfall peaks in July.
Radzymin averages 102 frost days, 5 hot days (≥ 30 °C) and 130 rainy days per year.
Radzymin 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 120 to 84 per year over the period.
The hottest day of the period reached 36.1 °C (on 8 August 2013) and the coldest -32.2 °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
RadzyminMazovia
- coords
- 52.42°, 21.18°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.2°C
Average daily high
11.8°C
Average daily low
4.5°C
Annual rainfall
635mm
Sunshine / day
7.3h
Mean relative humidity
78%
Average peak wind
17.5km/h
Seasonal range
21.6°C
Frost days (< 0 °C)
102 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
62.3 cm
Average feels-like high
9.1 °C
Average feels-like low
1.4 °C
Average peak gust
35.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.43 · 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
36.1 °C
8 August 2013
Coldest day
-32.2 °C
30 January 1987
Wettest day
56 mm
3 September 1995
Windiest day
51.4 km/h
3 November 1981
Strongest gust
103.3 km/h
20 February 1943
Hottest feels-like
37.0 °C
22 June 1954
Coldest feels-like
-37.4 °C
30 January 1987
Snowiest day
24.0 cm
30 January 1979
Sunniest day
15.9 h
20 June 2025
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 | 4.3 °C | +4.9 °C | 46 mm | +5 mm |
| Feb | 2.2 °C | +1.3 °C | 11 mm | -28 mm |
| Mar | 11.6 °C | +6.0 °C | 31 mm | -6 mm |
| Apr | 16.8 °C | +4.3 °C | 29 mm | -19 mm |
| May | 16.1 °C | -2.1 °C | 69 mm | +7 mm |
| Jun | 23.0 °C | +1.3 °C | 52 mm | -20 mm |
| Jul | 24.6 °C | +1.3 °C | 97 mm | +15 mm |
| Aug | 24.6 °C | +1.6 °C | 32 mm | -34 mm |
| Sep | 20.4 °C | +2.2 °C | 67 mm | +14 mm |
| Oct | 12.0 °C | 0.0 °C | 52 mm | +9 mm |
| Nov | 6.3 °C | +0.8 °C | 47 mm | +1 mm |
| Dec | 3.9 °C | +2.5 °C | 18 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 Radzymin?
Radzymin has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.2 °C and it receives 635 mm of precipitation per year.
What is the hottest day ever recorded in Radzymin?
The hottest day measured in Radzymin between 1940 and 2025 was 8 August 2013, reaching 36.1 °C.
What is the coldest day in Radzymin?
The coldest day measured in Radzymin between 1940 and 2025 was 30 January 1987, at -32.2 °C.
Does it snow in Radzymin?
Yes. Radzymin gets on average 62.3 cm of snow per year and has around 102 frost days.
Has the climate of Radzymin warmed?
Yes: Radzymin warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Radzymin?
The wettest day measured in Radzymin between 1940 and 2025 was 3 September 1995, with 56 mm of rain in 24 hours.
What was the windiest day in Radzymin?
The windiest day measured in Radzymin between 1940 and 2025 was 3 November 1981, with winds reaching 51.4 km/h.
What is the warmest month in Radzymin?
The warmest month in Radzymin is July (18.8 °C on average); the coldest is January (-2.8 °C).
How much does it rain in Radzymin?
Radzymin receives on average 635 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Radzymin?
Radzymin gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Radzymin?
The heaviest 24-hour snowfall measured in Radzymin between 1940 and 2025 was 30 January 1979, with 24.0 cm.
Are there tropical nights in Radzymin?
Yes: Radzymin has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Radzymin?
In Radzymin, between 1940 and 2025, the highest apparent temperature reached 37.0 °C on 22 June 1954, and the lowest was -37.4 °C on 30 January 1987.
Compare Radzymin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Radzymin