Tarnów climate — normals and trends
Tarnów (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 779 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 (18.9 °C on average) and the coldest is January (-2.6 °C). Rainfall peaks in July.
Tarnów averages 98 frost days, 6 hot days (≥ 30 °C) and 146 rainy days per year.
Tarnów 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 118 to 78 per year over the period.
The hottest day of the period reached 37.1 °C (on 8 August 2013) and the coldest -31.0 °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
TarnówLesser Poland
- coords
- 50.01°, 20.99°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
12.7°C
Average daily low
4.9°C
Annual rainfall
779mm
Sunshine / day
7.5h
Mean relative humidity
77%
Average peak wind
16.6km/h
Seasonal range
21.5°C
Frost days (< 0 °C)
98 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
146 d/yr
Annual snowfall
82.0 cm
Average feels-like high
10.3 °C
Average feels-like low
2.0 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
1 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 = 0.56 · 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
37.1 °C
8 August 2013
Coldest day
-31.0 °C
11 January 1940
Wettest day
67 mm
15 August 1945
Windiest day
46.2 km/h
11 March 2019
Strongest gust
104.8 km/h
20 January 1986
Hottest feels-like
38.3 °C
8 July 1957
Coldest feels-like
-36.2 °C
11 January 1940
Snowiest day
21.3 cm
31 March 1984
Sunniest day
15.3 h
30 June 2019
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 | 5.8 °C | +5.7 °C | 52 mm | +4 mm |
| Feb | 4.0 °C | +1.9 °C | 28 mm | -18 mm |
| Mar | 12.6 °C | +5.5 °C | 45 mm | -3 mm |
| Apr | 16.7 °C | +3.1 °C | 49 mm | -11 mm |
| May | 16.7 °C | -1.9 °C | 94 mm | +14 mm |
| Jun | 24.6 °C | +2.7 °C | 71 mm | -21 mm |
| Jul | 24.8 °C | +1.2 °C | 129 mm | +29 mm |
| Aug | 25.9 °C | +2.4 °C | 42 mm | -40 mm |
| Sep | 21.1 °C | +2.0 °C | 90 mm | +25 mm |
| Oct | 12.7 °C | -0.8 °C | 73 mm | +22 mm |
| Nov | 7.9 °C | +1.1 °C | 96 mm | +42 mm |
| Dec | 4.7 °C | +2.6 °C | 14 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 Tarnów?
Tarnów has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 779 mm of precipitation per year.
What is the hottest day ever recorded in Tarnów?
The hottest day measured in Tarnów between 1940 and 2025 was 8 August 2013, reaching 37.1 °C.
What is the coldest day in Tarnów?
The coldest day measured in Tarnów between 1940 and 2025 was 11 January 1940, at -31.0 °C.
Does it snow in Tarnów?
Yes. Tarnów gets on average 82.0 cm of snow per year and has around 98 frost days.
Has the climate of Tarnów warmed?
Yes: Tarnów warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tarnów?
The wettest day measured in Tarnów between 1940 and 2025 was 15 August 1945, with 67 mm of rain in 24 hours.
What was the windiest day in Tarnów?
The windiest day measured in Tarnów between 1940 and 2025 was 11 March 2019, with winds reaching 46.2 km/h.
What is the warmest month in Tarnów?
The warmest month in Tarnów is July (18.9 °C on average); the coldest is January (-2.6 °C).
How much does it rain in Tarnów?
Tarnów receives on average 779 mm of precipitation per year, spread over about 146 rainy days.
Is it sunny in Tarnów?
Tarnów gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tarnów?
The heaviest 24-hour snowfall measured in Tarnów between 1940 and 2025 was 31 March 1984, with 21.3 cm.
Are there tropical nights in Tarnów?
Yes: Tarnów has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tarnów?
In Tarnów, between 1940 and 2025, the highest apparent temperature reached 38.3 °C on 8 July 1957, and the lowest was -36.2 °C on 11 January 1940.
Compare Tarnów with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tarnów