Bielsko-Biala climate
Bielsko-Biala (Poland) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 8 °C47 °F, and about 796 mm31 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Bielsko-Biala climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 031 | −720 | −425 | 522.1 | 27 |
| Feb | 235 | −522 | −229 | 461.8 | 24 |
| Mar | 745 | −228 | 236 | 502.0 | 20 |
| Apr | 1457 | 338 | 947 | 512.0 | 5 |
| May | 1966 | 847 | 1457 | 943.7 | 0 |
| Jun | 2373 | 1355 | 1864 | 933.7 | 0 |
| Jul | 2577 | 1558 | 2068 | 963.8 | 0 |
| Aug | 2577 | 1457 | 2067 | 773.0 | 0 |
| Sep | 2067 | 948 | 1458 | 793.1 | 0 |
| Oct | 1356 | 439 | 948 | 602.4 | 4 |
| Nov | 745 | 032 | 439 | 502.0 | 12 |
| Dec | 134 | −424 | −229 | 481.9 | 25 |
| Year | 2577 | −720 | 847 | 79631 | 117 |
“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 | 93% | 81% | 0.9 | 8:33 |
| Feb | 91% | 80% | 1.6 | 10:01 |
| Mar | 84% | 72% | 2.8 | 11:44 |
| Apr | 77% | 65% | 4.1 | 13:41 |
| May | 75% | 69% | 4.8 | 15:22 |
| Jun | 72% | 69% | 5.2 | 16:19 |
| Jul | 68% | 64% | 5.1 | 15:55 |
| Aug | 66% | 59% | 4.6 | 14:26 |
| Sep | 72% | 64% | 3.2 | 12:31 |
| Oct | 82% | 70% | 2.0 | 10:38 |
| Nov | 89% | 78% | 1.0 | 8:58 |
| Dec | 93% | 81% | 0.7 | 8:07 |
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 Bielsko-Biala is like
The warmest month is July, with an average high of 25 °C77 °F and a low of 15 °C58 °F. The coldest is January, when highs average 0 °C31 °F and lows −7 °C20 °F. Seasons are strongly marked: the warmest month is on average 23.5 °C42.3 °F warmer than the coldest.
Annual precipitation is moderate at about 796 mm31 in. The wettest three-month stretch is May–July, which brings 36% of the annual total. The wettest month is July (96 mm3.8 in), the driest is February (46 mm1.8 in).
Relative humidity ranges from 66% in August to 93% in January. The clearest skies (lowest average cloud amount, 59%) are typical of August. Average wind speed near the ground ranges from 8 km/h (5 mph) in August to 12 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–March, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 19 cm).
Best time to visit Bielsko-Biala
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–September: average highs of 20 °C67 °F to 25 °C77 °F with 77 mm3.0 in to 96 mm3.8 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 0 °C31 °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 Bielsko-Biala
- Winter (December–February) — highs 031 to 2 °C35 °F, lows −720 to −4 °C24 °F, about 49 mm1.9 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 745 to 19 °C66 °F, lows −228 to 8 °C47 °F, about 65 mm2.6 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 2373 to 25 °C77 °F, lows 1355 to 15 °C58 °F, about 89 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 745 to 20 °C67 °F, lows 032 to 9 °C48 °F, about 63 mm2.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Bielsko-Biala compares
Compared with Katowice, about 49 km to the north, Bielsko-Biala has practically the same average temperature and receives 11% more precipitation (796 mm31 in vs 716 mm28 in).
Of the 36 places in Poland covered by World Climates, Bielsko-Biala is the 28th warmest by annual mean temperature and the 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: Žilina (Slovakia, Dfb), Lviv (Ukraine, Dfb) and Liberec (Czechia, Dfb).
Nearby places
- Rybnik 47 km · 9 °C48 °F · 796 mm31 in
- Katowice 49 km · 9 °C48 °F · 716 mm28 in
- Sosnowiec 52 km · 9 °C48 °F · 714 mm28 in
- Ostrava 55 km · 9 °C49 °F · 704 mm28 in
- Gliwice 59 km · 9 °C49 °F · 716 mm28 in
- Kraków 69 km · 9 °C49 °F · 786 mm31 in
- Žilina 70 km · 9 °C48 °F · 840 mm33 in
- Częstochowa 108 km · 9 °C48 °F · 654 mm26 in
Frequently asked questions
What is the warmest month in Bielsko-Biala?
July is the warmest month in Bielsko-Biala, with an average high of 25 °C (77 °F) and an average low of 15 °C (58 °F).
What is the coldest month in Bielsko-Biala?
January is the coldest month, with an average high of 0 °C (31 °F) and an average low of -7 °C (20 °F).
When does it rain the most in Bielsko-Biala?
July is the wettest month with about 96 mm (3.8 in) of precipitation; February is the driest with about 46 mm (1.8 in).
What is the best time to visit Bielsko-Biala?
Judging by long-term averages, the most comfortable months are June–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.