Ostrów Wielkopolski climate — normals and trends
Ostrów Wielkopolski (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 623 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 (-1.7 °C). Rainfall peaks in July.
Ostrów Wielkopolski averages 91 frost days, 7 hot days (≥ 30 °C) and 128 rainy days per year.
Ostrów Wielkopolski has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 108 to 74 per year over the period.
The hottest day of the period reached 38.1 °C (on 26 June 2019) and the coldest -31.7 °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
Ostrów WielkopolskiGreater Poland
- coords
- 51.66°, 17.81°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.8°C
Average daily high
12.5°C
Average daily low
5.1°C
Annual rainfall
623mm
Sunshine / day
7.4h
Mean relative humidity
77%
Average peak wind
19.0km/h
Seasonal range
20.5°C
Frost days (< 0 °C)
91 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
50.6 cm
Average feels-like high
9.7 °C
Average feels-like low
1.9 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °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
38.1 °C
26 June 2019
Coldest day
-31.7 °C
14 January 1987
Wettest day
54 mm
14 July 2016
Windiest day
55.4 km/h
19 January 2007
Strongest gust
119.2 km/h
18 January 2007
Hottest feels-like
38.7 °C
8 August 2015
Coldest feels-like
-36.9 °C
14 January 1987
Snowiest day
14.1 cm
15 December 1952
Sunniest day
16.0 h
5 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 | 5.1 °C | +4.5 °C | 48 mm | +8 mm |
| Feb | 3.5 °C | +1.3 °C | 15 mm | -23 mm |
| Mar | 12.0 °C | +5.2 °C | 27 mm | -14 mm |
| Apr | 17.1 °C | +4.1 °C | 37 mm | -6 mm |
| May | 16.6 °C | -1.5 °C | 58 mm | -2 mm |
| Jun | 23.7 °C | +2.0 °C | 64 mm | -3 mm |
| Jul | 24.2 °C | +0.8 °C | 117 mm | +33 mm |
| Aug | 24.4 °C | +1.1 °C | 50 mm | -18 mm |
| Sep | 20.5 °C | +1.7 °C | 74 mm | +25 mm |
| Oct | 12.1 °C | -0.9 °C | 69 mm | +27 mm |
| Nov | 7.0 °C | +0.6 °C | 52 mm | +7 mm |
| Dec | 4.0 °C | +1.6 °C | 19 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 Ostrów Wielkopolski?
Ostrów Wielkopolski has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 623 mm of precipitation per year.
What is the hottest day ever recorded in Ostrów Wielkopolski?
The hottest day measured in Ostrów Wielkopolski between 1940 and 2025 was 26 June 2019, reaching 38.1 °C.
What is the coldest day in Ostrów Wielkopolski?
The coldest day measured in Ostrów Wielkopolski between 1940 and 2025 was 14 January 1987, at -31.7 °C.
Does it snow in Ostrów Wielkopolski?
Yes. Ostrów Wielkopolski gets on average 50.6 cm of snow per year and has around 91 frost days.
Has the climate of Ostrów Wielkopolski warmed?
Yes: Ostrów Wielkopolski warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ostrów Wielkopolski?
The wettest day measured in Ostrów Wielkopolski between 1940 and 2025 was 14 July 2016, with 54 mm of rain in 24 hours.
What was the windiest day in Ostrów Wielkopolski?
The windiest day measured in Ostrów Wielkopolski between 1940 and 2025 was 19 January 2007, with winds reaching 55.4 km/h.
What is the warmest month in Ostrów Wielkopolski?
The warmest month in Ostrów Wielkopolski is July (18.8 °C on average); the coldest is January (-1.7 °C).
How much does it rain in Ostrów Wielkopolski?
Ostrów Wielkopolski receives on average 623 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Ostrów Wielkopolski?
Ostrów Wielkopolski 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 Ostrów Wielkopolski?
The heaviest 24-hour snowfall measured in Ostrów Wielkopolski between 1940 and 2025 was 15 December 1952, with 14.1 cm.
Are there tropical nights in Ostrów Wielkopolski?
Yes: Ostrów Wielkopolski has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ostrów Wielkopolski?
In Ostrów Wielkopolski, between 1940 and 2025, the highest apparent temperature reached 38.7 °C on 8 August 2015, and the lowest was -36.9 °C on 14 January 1987.
Compare Ostrów Wielkopolski with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ostrów Wielkopolski