Olkusz climate — normals and trends
Olkusz (Poland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.1 °C and it receives 774 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 (18.2 °C on average) and the coldest is January (-2.9 °C). Rainfall peaks in July.
Olkusz averages 105 frost days, 3 hot days (≥ 30 °C) and 146 rainy days per year.
Olkusz has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 127 to 83 per year over the period.
The hottest day of the period reached 36.1 °C (on 8 August 2013) and the coldest -27.8 °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
OlkuszLesser Poland
- coords
- 50.28°, 19.57°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.1°C
Average daily high
12.0°C
Average daily low
4.4°C
Annual rainfall
774mm
Sunshine / day
7.4h
Mean relative humidity
79%
Average peak wind
18.3km/h
Seasonal range
21.1°C
Frost days (< 0 °C)
105 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
146 d/yr
Annual snowfall
82.7 cm
Average feels-like high
9.4 °C
Average feels-like low
1.3 °C
Average peak gust
35.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.54 · 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
36.1 °C
8 August 2013
Coldest day
-27.8 °C
11 January 1940
Wettest day
76 mm
16 July 1957
Windiest day
52.7 km/h
2 March 1956
Strongest gust
111.2 km/h
19 January 2007
Hottest feels-like
38.7 °C
8 July 1957
Coldest feels-like
-34.2 °C
11 January 1940
Snowiest day
16.0 cm
30 January 1979
Sunniest day
15.6 h
1 July 2025
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 | +5.2 °C | 53 mm | +7 mm |
| Feb | 3.6 °C | +2.2 °C | 22 mm | -23 mm |
| Mar | 11.9 °C | +5.5 °C | 53 mm | +4 mm |
| Apr | 16.3 °C | +3.4 °C | 45 mm | -14 mm |
| May | 16.0 °C | -1.8 °C | 75 mm | -6 mm |
| Jun | 23.6 °C | +2.6 °C | 71 mm | -22 mm |
| Jul | 23.9 °C | +1.1 °C | 135 mm | +34 mm |
| Aug | 25.0 °C | +2.3 °C | 39 mm | -47 mm |
| Sep | 20.1 °C | +1.7 °C | 93 mm | +30 mm |
| Oct | 12.2 °C | -0.7 °C | 74 mm | +24 mm |
| Nov | 7.2 °C | +1.0 °C | 73 mm | +20 mm |
| Dec | 3.5 °C | +1.9 °C | 11 mm | -38 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 Olkusz?
Olkusz has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.1 °C and it receives 774 mm of precipitation per year.
What is the hottest day ever recorded in Olkusz?
The hottest day measured in Olkusz between 1940 and 2025 was 8 August 2013, reaching 36.1 °C.
What is the coldest day in Olkusz?
The coldest day measured in Olkusz between 1940 and 2025 was 11 January 1940, at -27.8 °C.
Does it snow in Olkusz?
Yes. Olkusz gets on average 82.7 cm of snow per year and has around 105 frost days.
Has the climate of Olkusz warmed?
Yes: Olkusz warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Olkusz?
The wettest day measured in Olkusz between 1940 and 2025 was 16 July 1957, with 76 mm of rain in 24 hours.
What was the windiest day in Olkusz?
The windiest day measured in Olkusz between 1940 and 2025 was 2 March 1956, with winds reaching 52.7 km/h.
What is the warmest month in Olkusz?
The warmest month in Olkusz is July (18.2 °C on average); the coldest is January (-2.9 °C).
How much does it rain in Olkusz?
Olkusz receives on average 774 mm of precipitation per year, spread over about 146 rainy days.
Is it sunny in Olkusz?
Olkusz 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 Olkusz?
The heaviest 24-hour snowfall measured in Olkusz between 1940 and 2025 was 30 January 1979, with 16.0 cm.
Are there tropical nights in Olkusz?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Olkusz.
What was the most extreme apparent temperature in Olkusz?
In Olkusz, between 1940 and 2025, the highest apparent temperature reached 38.7 °C on 8 July 1957, and the lowest was -34.2 °C on 11 January 1940.
Compare Olkusz with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Olkusz