Września climate — normals and trends
Września (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.7 °C and it receives 592 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 (-1.6 °C). Rainfall peaks in July.
Września averages 91 frost days, 6 hot days (≥ 30 °C) and 124 rainy days per year.
Września has warmed by +2.4 °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 109 to 73 per year over the period.
The hottest day of the period reached 38.2 °C (on 10 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
WrześniaGreater Poland
- coords
- 52.33°, 17.57°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
12.3°C
Average daily low
5.1°C
Annual rainfall
592mm
Sunshine / day
7.4h
Mean relative humidity
77%
Average peak wind
19.1km/h
Seasonal range
20.4°C
Frost days (< 0 °C)
91 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
124 d/yr
Annual snowfall
45.8 cm
Average feels-like high
9.5 °C
Average feels-like low
1.9 °C
Average peak gust
36.5 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.6 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
38.2 °C
10 August 1992
Coldest day
-29.4 °C
14 January 1987
Wettest day
59 mm
24 July 2010
Windiest day
56.5 km/h
24 November 1984
Strongest gust
111.2 km/h
24 November 1984
Hottest feels-like
38.2 °C
8 August 2015
Coldest feels-like
-34.3 °C
14 January 1987
Snowiest day
12.3 cm
26 November 1969
Sunniest day
16.0 h
4 July 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 | 4.8 °C | +4.2 °C | 50 mm | +12 mm |
| Feb | 3.1 °C | +1.0 °C | 19 mm | -17 mm |
| Mar | 11.7 °C | +5.1 °C | 24 mm | -15 mm |
| Apr | 16.9 °C | +4.2 °C | 27 mm | -13 mm |
| May | 16.5 °C | -1.4 °C | 63 mm | +7 mm |
| Jun | 23.4 °C | +1.9 °C | 59 mm | -3 mm |
| Jul | 24.0 °C | +0.7 °C | 92 mm | +11 mm |
| Aug | 24.0 °C | +0.9 °C | 67 mm | +2 mm |
| Sep | 20.5 °C | +1.9 °C | 58 mm | +10 mm |
| Oct | 12.2 °C | -0.6 °C | 72 mm | +31 mm |
| Nov | 6.8 °C | +0.5 °C | 43 mm | +0 mm |
| Dec | 4.0 °C | +1.6 °C | 17 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 Września?
Września has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 592 mm of precipitation per year.
What is the hottest day ever recorded in Września?
The hottest day measured in Września between 1940 and 2025 was 10 August 1992, reaching 38.2 °C.
What is the coldest day in Września?
The coldest day measured in Września between 1940 and 2025 was 14 January 1987, at -29.4 °C.
Does it snow in Września?
Yes. Września gets on average 45.8 cm of snow per year and has around 91 frost days.
Has the climate of Września warmed?
Yes: Września warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Września?
The wettest day measured in Września between 1940 and 2025 was 24 July 2010, with 59 mm of rain in 24 hours.
What was the windiest day in Września?
The windiest day measured in Września between 1940 and 2025 was 24 November 1984, with winds reaching 56.5 km/h.
What is the warmest month in Września?
The warmest month in Września is July (18.8 °C on average); the coldest is January (-1.6 °C).
How much does it rain in Września?
Września receives on average 592 mm of precipitation per year, spread over about 124 rainy days.
Is it sunny in Września?
Września 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 Września?
The heaviest 24-hour snowfall measured in Września between 1940 and 2025 was 26 November 1969, with 12.3 cm.
Are there tropical nights in Września?
Yes: Września has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Września?
In Września, between 1940 and 2025, the highest apparent temperature reached 38.2 °C on 8 August 2015, and the lowest was -34.3 °C on 14 January 1987.
Compare Września with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Września