Kalisz climate — normals and trends
Kalisz (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 625 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.
Kalisz averages 92 frost days, 6 hot days (≥ 30 °C) and 128 rainy days per year.
Kalisz 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 110 to 74 per year over the period.
The hottest day of the period reached 37.8 °C (on 8 August 2015) and the coldest -31.3 °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
KaliszGreater Poland
- coords
- 51.76°, 18.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
12.4°C
Average daily low
5.0°C
Annual rainfall
625mm
Sunshine / day
7.3h
Mean relative humidity
77%
Average peak wind
19.0km/h
Seasonal range
20.5°C
Frost days (< 0 °C)
92 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
51.8 cm
Average feels-like high
9.6 °C
Average feels-like low
1.8 °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
+2.6 °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
37.8 °C
8 August 2015
Coldest day
-31.3 °C
14 January 1987
Wettest day
50 mm
6 July 1997
Windiest day
55.2 km/h
28 March 1997
Strongest gust
119.2 km/h
20 January 1986
Hottest feels-like
38.7 °C
8 August 2015
Coldest feels-like
-36.4 °C
14 January 1987
Snowiest day
14.2 cm
15 December 1952
Sunniest day
16.0 h
5 July 1942
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 5.0 °C | +4.5 °C | 48 mm | +8 mm |
| Feb | 3.4 °C | +1.3 °C | 14 mm | -24 mm |
| Mar | 12.0 °C | +5.3 °C | 26 mm | -14 mm |
| Apr | 17.1 °C | +4.2 °C | 35 mm | -8 mm |
| May | 16.6 °C | -1.6 °C | 61 mm | -1 mm |
| Jun | 23.7 °C | +2.0 °C | 67 mm | -1 mm |
| Jul | 24.2 °C | +0.8 °C | 128 mm | +44 mm |
| Aug | 24.3 °C | +1.0 °C | 45 mm | -23 mm |
| Sep | 20.4 °C | +1.6 °C | 74 mm | +25 mm |
| Oct | 12.1 °C | -0.8 °C | 70 mm | +27 mm |
| Nov | 6.9 °C | +0.5 °C | 56 mm | +11 mm |
| Dec | 4.0 °C | +1.7 °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 Kalisz?
Kalisz has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 625 mm of precipitation per year.
What is the hottest day ever recorded in Kalisz?
The hottest day measured in Kalisz between 1940 and 2025 was 8 August 2015, reaching 37.8 °C.
What is the coldest day in Kalisz?
The coldest day measured in Kalisz between 1940 and 2025 was 14 January 1987, at -31.3 °C.
Does it snow in Kalisz?
Yes. Kalisz gets on average 51.8 cm of snow per year and has around 92 frost days.
Has the climate of Kalisz warmed?
Yes: Kalisz warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kalisz?
The wettest day measured in Kalisz between 1940 and 2025 was 6 July 1997, with 50 mm of rain in 24 hours.
What was the windiest day in Kalisz?
The windiest day measured in Kalisz between 1940 and 2025 was 28 March 1997, with winds reaching 55.2 km/h.
What is the warmest month in Kalisz?
The warmest month in Kalisz is July (18.8 °C on average); the coldest is January (-1.7 °C).
How much does it rain in Kalisz?
Kalisz receives on average 625 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Kalisz?
Kalisz 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 Kalisz?
The heaviest 24-hour snowfall measured in Kalisz between 1940 and 2025 was 15 December 1952, with 14.2 cm.
Are there tropical nights in Kalisz?
Yes: Kalisz has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kalisz?
In Kalisz, between 1940 and 2025, the highest apparent temperature reached 38.7 °C on 8 August 2015, and the lowest was -36.4 °C on 14 January 1987.
Compare Kalisz with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kalisz