Sulejów climate — normals and trends
Sulejów (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.3 °C and it receives 665 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 (-2.7 °C). Rainfall peaks in July.
Sulejów averages 103 frost days, 5 hot days (≥ 30 °C) and 133 rainy days per year.
Sulejów has warmed by +2.5 °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 121 to 85 per year over the period.
The hottest day of the period reached 37.2 °C (on 29 August 1992) and the coldest -29.4 °C (on 14 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
SulejówŁódź Voivodeship
- coords
- 51.35°, 19.89°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.3°C
Average daily high
12.1°C
Average daily low
4.4°C
Annual rainfall
665mm
Sunshine / day
7.3h
Mean relative humidity
78%
Average peak wind
19.4km/h
Seasonal range
21.3°C
Frost days (< 0 °C)
103 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
64.7 cm
Average feels-like high
9.3 °C
Average feels-like low
1.2 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.47 · 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
37.2 °C
29 August 1992
Coldest day
-29.4 °C
14 January 1987
Wettest day
71 mm
28 July 2025
Windiest day
55.5 km/h
19 January 2007
Strongest gust
117.4 km/h
20 January 1986
Hottest feels-like
37.8 °C
29 July 2005
Coldest feels-like
-34.9 °C
14 January 1987
Snowiest day
17.1 cm
31 March 1984
Sunniest day
15.7 h
24 June 2008
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 | 4.7 °C | +5.0 °C | 45 mm | +5 mm |
| Feb | 3.1 °C | +1.7 °C | 18 mm | -21 mm |
| Mar | 12.0 °C | +5.8 °C | 35 mm | -6 mm |
| Apr | 16.6 °C | +3.8 °C | 21 mm | -30 mm |
| May | 16.2 °C | -2.0 °C | 67 mm | -1 mm |
| Jun | 23.8 °C | +2.2 °C | 52 mm | -27 mm |
| Jul | 24.3 °C | +1.0 °C | 171 mm | +81 mm |
| Aug | 24.5 °C | +1.4 °C | 33 mm | -39 mm |
| Sep | 20.2 °C | +1.7 °C | 65 mm | +11 mm |
| Oct | 11.9 °C | -0.9 °C | 70 mm | +28 mm |
| Nov | 6.8 °C | +0.7 °C | 62 mm | +16 mm |
| Dec | 3.8 °C | +2.0 °C | 18 mm | -26 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 Sulejów?
Sulejów has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.3 °C and it receives 665 mm of precipitation per year.
What is the hottest day ever recorded in Sulejów?
The hottest day measured in Sulejów between 1940 and 2025 was 29 August 1992, reaching 37.2 °C.
What is the coldest day in Sulejów?
The coldest day measured in Sulejów between 1940 and 2025 was 14 January 1987, at -29.4 °C.
Does it snow in Sulejów?
Yes. Sulejów gets on average 64.7 cm of snow per year and has around 103 frost days.
Has the climate of Sulejów warmed?
Yes: Sulejów warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sulejów?
The wettest day measured in Sulejów between 1940 and 2025 was 28 July 2025, with 71 mm of rain in 24 hours.
What was the windiest day in Sulejów?
The windiest day measured in Sulejów between 1940 and 2025 was 19 January 2007, with winds reaching 55.5 km/h.
What is the warmest month in Sulejów?
The warmest month in Sulejów is July (18.6 °C on average); the coldest is January (-2.7 °C).
How much does it rain in Sulejów?
Sulejów receives on average 665 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Sulejów?
Sulejów 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 Sulejów?
The heaviest 24-hour snowfall measured in Sulejów between 1940 and 2025 was 31 March 1984, with 17.1 cm.
Are there tropical nights in Sulejów?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Sulejów.
What was the most extreme apparent temperature in Sulejów?
In Sulejów, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 29 July 2005, and the lowest was -34.9 °C on 14 January 1987.
Compare Sulejów with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sulejów