Tarnów climate
Tarnów (Poland) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 9 °C48 °F, and about 756 mm30 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Tarnów climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 032 | −620 | −326 | 451.8 | 27 |
| Feb | 236 | −522 | −229 | 421.6 | 24 |
| Mar | 846 | −229 | 337 | 461.8 | 20 |
| Apr | 1558 | 439 | 949 | 512.0 | 5 |
| May | 2067 | 949 | 1558 | 943.7 | 0 |
| Jun | 2474 | 1356 | 1865 | 923.6 | 0 |
| Jul | 2679 | 1560 | 2169 | 1054.1 | 0 |
| Aug | 2679 | 1558 | 2069 | 682.7 | 0 |
| Sep | 2169 | 1049 | 1559 | 712.8 | 0 |
| Oct | 1457 | 440 | 948 | 582.3 | 4 |
| Nov | 846 | 133 | 439 | 451.8 | 13 |
| Dec | 235 | −425 | −130 | 411.6 | 25 |
| Year | 2679 | −620 | 948 | 75630 | 119 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 92% | 81% | 0.8 | 8:31 |
| Feb | 90% | 81% | 1.6 | 10:00 |
| Mar | 83% | 69% | 2.8 | 11:43 |
| Apr | 76% | 63% | 4.2 | 13:42 |
| May | 75% | 65% | 5.1 | 15:23 |
| Jun | 72% | 65% | 5.5 | 16:21 |
| Jul | 68% | 64% | 5.3 | 15:57 |
| Aug | 66% | 58% | 4.7 | 14:27 |
| Sep | 71% | 61% | 3.3 | 12:32 |
| Oct | 81% | 68% | 2.0 | 10:38 |
| Nov | 89% | 78% | 0.9 | 8:56 |
| Dec | 92% | 80% | 0.6 | 8:06 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Tarnów is like
The warmest month is July, with an average high of 26 °C79 °F and a low of 15 °C60 °F. The coldest is January, when highs average 0 °C32 °F and lows −6 °C20 °F. Seasons are strongly marked: the warmest month is on average 24 °C43.1 °F warmer than the coldest.
Annual precipitation is moderate at about 756 mm30 in. The wettest three-month stretch is May–July, which brings 38% of the annual total. The wettest month is July (105 mm4.1 in), the driest is December (41 mm1.6 in).
Relative humidity ranges from 66% in August to 92% in January. The clearest skies (lowest average cloud amount, 58%) are typical of August. Average wind speed near the ground ranges from 8 km/h (5 mph) in August to 11 km/h (7 mph) in January. Daylight lasts from about 8.1 hours in December to 16.3 hours in June.
A lasting snow cover is typical in December–February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 17 cm).
Best time to visit Tarnów
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June and August and September: average highs of 21 °C69 °F to 26 °C79 °F with 68 mm2.7 in to 92 mm3.6 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 0 °C32 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Tarnów
- Winter (December–February) — highs 032 to 2 °C36 °F, lows −620 to −4 °C25 °F, about 43 mm1.7 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 846 to 20 °C67 °F, lows −229 to 9 °C49 °F, about 64 mm2.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2474 to 26 °C79 °F, lows 1356 to 15 °C60 °F, about 88 mm3.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 846 to 21 °C69 °F, lows 133 to 10 °C49 °F, about 58 mm2.3 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Tarnów compares
Compared with Rzeszów, about 72 km to the east, Tarnów has practically the same average temperature and receives a similar amount of precipitation.
Of the 36 places in Poland covered by World Climates, Tarnów is the 11th warmest by annual mean temperature and the 4th wettest by annual precipitation. See all of them on the Poland climate page.
Places in other countries with the most similar temperature and rainfall pattern: Ostrava (Czechia, Dfb), Ivano-Frankivsk (Ukraine, Dfb) and Chernivtsi (Ukraine, Dfb).
Nearby places
- Rzeszów 72 km · 9 °C48 °F · 740 mm29 in
- Kraków 75 km · 9 °C49 °F · 786 mm31 in
- Kielce 99 km · 8 °C47 °F · 665 mm26 in
- Sosnowiec 138 km · 9 °C48 °F · 714 mm28 in
- Bielsko-Biala 141 km · 8 °C47 °F · 796 mm31 in
- Katowice 143 km · 9 °C48 °F · 716 mm28 in
- Košice 146 km · 10 °C49 °F · 667 mm26 in
- Radom 155 km · 9 °C48 °F · 622 mm24 in
Frequently asked questions
What is the warmest month in Tarnów?
July is the warmest month in Tarnów, with an average high of 26 °C (79 °F) and an average low of 15 °C (60 °F).
What is the coldest month in Tarnów?
January is the coldest month, with an average high of 0 °C (32 °F) and an average low of -6 °C (20 °F).
When does it rain the most in Tarnów?
July is the wettest month with about 105 mm (4.1 in) of precipitation; December is the driest with about 41 mm (1.6 in).
What is the best time to visit Tarnów?
Judging by long-term averages, the most comfortable months are June and August and September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.