Ostrowiec Świętokrzyski climate — normals and trends
Ostrowiec Świętokrzyski (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 647 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 (-2.8 °C). Rainfall peaks in July.
Ostrowiec Świętokrzyski averages 102 frost days, 5 hot days (≥ 30 °C) and 130 rainy days per year.
Ostrowiec Świętokrzyski 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 122 to 82 per year over the period.
The hottest day of the period reached 36.9 °C (on 1 July 2019) and the coldest -31.8 °C (on 11 January 1940).
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
Ostrowiec ŚwiętokrzyskiŚwiętokrzyskie
- coords
- 50.93°, 21.39°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.3°C
Average daily high
12.1°C
Average daily low
4.5°C
Annual rainfall
647mm
Sunshine / day
7.4h
Mean relative humidity
78%
Average peak wind
17.6km/h
Seasonal range
21.6°C
Frost days (< 0 °C)
102 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
130 d/yr
Annual snowfall
63.3 cm
Average feels-like high
9.5 °C
Average feels-like low
1.5 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.8 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
36.9 °C
1 July 2019
Coldest day
-31.8 °C
11 January 1940
Wettest day
49 mm
12 August 1949
Windiest day
49.8 km/h
20 January 1986
Strongest gust
112.7 km/h
20 January 1986
Hottest feels-like
37.2 °C
29 July 2005
Coldest feels-like
-37.5 °C
11 January 1940
Snowiest day
19.5 cm
30 January 1979
Sunniest day
15.4 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 | 5.1 °C | +5.5 °C | 47 mm | +10 mm |
| Feb | 2.7 °C | +1.4 °C | 21 mm | -15 mm |
| Mar | 11.9 °C | +5.8 °C | 48 mm | +9 mm |
| Apr | 16.3 °C | +3.4 °C | 39 mm | -14 mm |
| May | 16.0 °C | -2.3 °C | 75 mm | +8 mm |
| Jun | 23.2 °C | +1.5 °C | 80 mm | +3 mm |
| Jul | 24.1 °C | +0.7 °C | 132 mm | +47 mm |
| Aug | 24.5 °C | +1.3 °C | 34 mm | -37 mm |
| Sep | 20.6 °C | +2.1 °C | 72 mm | +16 mm |
| Oct | 12.1 °C | -0.6 °C | 57 mm | +14 mm |
| Nov | 7.0 °C | +1.0 °C | 71 mm | +28 mm |
| Dec | 3.9 °C | +2.3 °C | 20 mm | -19 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 Ostrowiec Świętokrzyski?
Ostrowiec Świętokrzyski has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.3 °C and it receives 647 mm of precipitation per year.
What is the hottest day ever recorded in Ostrowiec Świętokrzyski?
The hottest day measured in Ostrowiec Świętokrzyski between 1940 and 2025 was 1 July 2019, reaching 36.9 °C.
What is the coldest day in Ostrowiec Świętokrzyski?
The coldest day measured in Ostrowiec Świętokrzyski between 1940 and 2025 was 11 January 1940, at -31.8 °C.
Does it snow in Ostrowiec Świętokrzyski?
Yes. Ostrowiec Świętokrzyski gets on average 63.3 cm of snow per year and has around 102 frost days.
Has the climate of Ostrowiec Świętokrzyski warmed?
Yes: Ostrowiec Świętokrzyski warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ostrowiec Świętokrzyski?
The wettest day measured in Ostrowiec Świętokrzyski between 1940 and 2025 was 12 August 1949, with 49 mm of rain in 24 hours.
What was the windiest day in Ostrowiec Świętokrzyski?
The windiest day measured in Ostrowiec Świętokrzyski between 1940 and 2025 was 20 January 1986, with winds reaching 49.8 km/h.
What is the warmest month in Ostrowiec Świętokrzyski?
The warmest month in Ostrowiec Świętokrzyski is July (18.8 °C on average); the coldest is January (-2.8 °C).
How much does it rain in Ostrowiec Świętokrzyski?
Ostrowiec Świętokrzyski receives on average 647 mm of precipitation per year, spread over about 130 rainy days.
Is it sunny in Ostrowiec Świętokrzyski?
Ostrowiec Świętokrzyski 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 Ostrowiec Świętokrzyski?
The heaviest 24-hour snowfall measured in Ostrowiec Świętokrzyski between 1940 and 2025 was 30 January 1979, with 19.5 cm.
Are there tropical nights in Ostrowiec Świętokrzyski?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Ostrowiec Świętokrzyski.
What was the most extreme apparent temperature in Ostrowiec Świętokrzyski?
In Ostrowiec Świętokrzyski, between 1940 and 2025, the highest apparent temperature reached 37.2 °C on 29 July 2005, and the lowest was -37.5 °C on 11 January 1940.
Compare Ostrowiec Świętokrzyski with another city
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Nearby cities
The climate around Ostrowiec Świętokrzyski