Bychawa climate — normals and trends
Bychawa (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.9 °C and it receives 725 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 (18.5 °C on average) and the coldest is January (-3.4 °C). Rainfall peaks in July.
Bychawa averages 108 frost days, 4 hot days (≥ 30 °C) and 138 rainy days per year.
Bychawa 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 127 to 89 per year over the period.
The hottest day of the period reached 36.4 °C (on 1 July 2019) and the coldest -31.0 °C (on 11 January 1950).
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
BychawaLublin
- coords
- 51.02°, 22.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.9°C
Average daily high
11.6°C
Average daily low
4.2°C
Annual rainfall
725mm
Sunshine / day
7.4h
Mean relative humidity
79%
Average peak wind
17.5km/h
Seasonal range
21.9°C
Frost days (< 0 °C)
108 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
82.2 cm
Average feels-like high
9.0 °C
Average feels-like low
1.1 °C
Average peak gust
35.4 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
+2.4 °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
36.4 °C
1 July 2019
Coldest day
-31.0 °C
11 January 1950
Wettest day
62 mm
1 June 1980
Windiest day
49.7 km/h
3 November 1981
Strongest gust
108.0 km/h
20 January 1986
Hottest feels-like
36.9 °C
11 July 2024
Coldest feels-like
-36.2 °C
11 January 1950
Snowiest day
19.1 cm
19 April 1999
Sunniest day
15.2 h
26 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 | 4.5 °C | +5.6 °C | 49 mm | +5 mm |
| Feb | 1.8 °C | +1.2 °C | 16 mm | -26 mm |
| Mar | 11.4 °C | +5.9 °C | 63 mm | +18 mm |
| Apr | 15.6 °C | +3.1 °C | 46 mm | -9 mm |
| May | 15.4 °C | -2.5 °C | 73 mm | -3 mm |
| Jun | 22.7 °C | +1.4 °C | 86 mm | -1 mm |
| Jul | 24.0 °C | +0.9 °C | 144 mm | +52 mm |
| Aug | 23.9 °C | +1.1 °C | 37 mm | -41 mm |
| Sep | 20.4 °C | +2.4 °C | 68 mm | +6 mm |
| Oct | 11.4 °C | -0.7 °C | 64 mm | +16 mm |
| Nov | 6.9 °C | +1.5 °C | 64 mm | +16 mm |
| Dec | 3.7 °C | +2.7 °C | 23 mm | -25 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 Bychawa?
Bychawa has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.9 °C and it receives 725 mm of precipitation per year.
What is the hottest day ever recorded in Bychawa?
The hottest day measured in Bychawa between 1940 and 2025 was 1 July 2019, reaching 36.4 °C.
What is the coldest day in Bychawa?
The coldest day measured in Bychawa between 1940 and 2025 was 11 January 1950, at -31.0 °C.
Does it snow in Bychawa?
Yes. Bychawa gets on average 82.2 cm of snow per year and has around 108 frost days.
Has the climate of Bychawa warmed?
Yes: Bychawa warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bychawa?
The wettest day measured in Bychawa between 1940 and 2025 was 1 June 1980, with 62 mm of rain in 24 hours.
What was the windiest day in Bychawa?
The windiest day measured in Bychawa between 1940 and 2025 was 3 November 1981, with winds reaching 49.7 km/h.
What is the warmest month in Bychawa?
The warmest month in Bychawa is July (18.5 °C on average); the coldest is January (-3.4 °C).
How much does it rain in Bychawa?
Bychawa receives on average 725 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Bychawa?
Bychawa 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 Bychawa?
The heaviest 24-hour snowfall measured in Bychawa between 1940 and 2025 was 19 April 1999, with 19.1 cm.
Are there tropical nights in Bychawa?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bychawa.
What was the most extreme apparent temperature in Bychawa?
In Bychawa, between 1940 and 2025, the highest apparent temperature reached 36.9 °C on 11 July 2024, and the lowest was -36.2 °C on 11 January 1950.
Compare Bychawa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bychawa