Ostrzeszów climate — normals and trends
Ostrzeszów (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 643 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 (-1.8 °C). Rainfall peaks in July.
Ostrzeszów averages 93 frost days, 7 hot days (≥ 30 °C) and 130 rainy days per year.
Ostrzeszów 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 111 to 75 per year over the period.
The hottest day of the period reached 37.6 °C (on 10 August 1992) and the coldest -30.6 °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
OstrzeszówGreater Poland
- coords
- 51.43°, 17.93°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
12.5°C
Average daily low
5.0°C
Annual rainfall
643mm
Sunshine / day
7.3h
Mean relative humidity
77%
Average peak wind
18.8km/h
Seasonal range
20.6°C
Frost days (< 0 °C)
93 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
54.6 cm
Average feels-like high
9.7 °C
Average feels-like low
1.8 °C
Average peak gust
36.4 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 = 0.48 · 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
37.6 °C
10 August 1992
Coldest day
-30.6 °C
14 January 1987
Wettest day
54 mm
6 July 1997
Windiest day
54.9 km/h
5 October 2017
Strongest gust
117.4 km/h
28 March 1997
Hottest feels-like
38.1 °C
5 July 1957
Coldest feels-like
-35.7 °C
14 January 1987
Snowiest day
12.3 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 | 5.0 °C | +4.5 °C | 50 mm | +10 mm |
| Feb | 3.6 °C | +1.5 °C | 13 mm | -26 mm |
| Mar | 11.9 °C | +5.1 °C | 26 mm | -15 mm |
| Apr | 17.0 °C | +4.0 °C | 37 mm | -8 mm |
| May | 16.5 °C | -1.8 °C | 56 mm | -6 mm |
| Jun | 23.4 °C | +1.5 °C | 79 mm | +7 mm |
| Jul | 23.9 °C | +0.4 °C | 139 mm | +52 mm |
| Aug | 24.2 °C | +0.9 °C | 43 mm | -27 mm |
| Sep | 20.3 °C | +1.5 °C | 78 mm | +28 mm |
| Oct | 12.0 °C | -1.0 °C | 71 mm | +27 mm |
| Nov | 6.9 °C | +0.5 °C | 56 mm | +11 mm |
| Dec | 4.1 °C | +1.8 °C | 17 mm | -29 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 Ostrzeszów?
Ostrzeszów has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 643 mm of precipitation per year.
What is the hottest day ever recorded in Ostrzeszów?
The hottest day measured in Ostrzeszów between 1940 and 2025 was 10 August 1992, reaching 37.6 °C.
What is the coldest day in Ostrzeszów?
The coldest day measured in Ostrzeszów between 1940 and 2025 was 14 January 1987, at -30.6 °C.
Does it snow in Ostrzeszów?
Yes. Ostrzeszów gets on average 54.6 cm of snow per year and has around 93 frost days.
Has the climate of Ostrzeszów warmed?
Yes: Ostrzeszów warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ostrzeszów?
The wettest day measured in Ostrzeszów between 1940 and 2025 was 6 July 1997, with 54 mm of rain in 24 hours.
What was the windiest day in Ostrzeszów?
The windiest day measured in Ostrzeszów between 1940 and 2025 was 5 October 2017, with winds reaching 54.9 km/h.
What is the warmest month in Ostrzeszów?
The warmest month in Ostrzeszów is July (18.8 °C on average); the coldest is January (-1.8 °C).
How much does it rain in Ostrzeszów?
Ostrzeszów receives on average 643 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Ostrzeszów?
Ostrzeszów 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 Ostrzeszów?
The heaviest 24-hour snowfall measured in Ostrzeszów between 1940 and 2025 was 15 December 1952, with 12.3 cm.
Are there tropical nights in Ostrzeszów?
Yes: Ostrzeszów has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ostrzeszów?
In Ostrzeszów, between 1940 and 2025, the highest apparent temperature reached 38.1 °C on 5 July 1957, and the lowest was -35.7 °C on 14 January 1987.
Compare Ostrzeszów with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ostrzeszów