Bielsko-Biala climate

Name: Bielsko-Biala
Address: PL

Bielsko-Biala is warmest in August, with average highs of 23 °C, and coldest in January, when nights average -4.9 °C. July is the wettest month (144 mm) and February the driest (64 mm). Figures are 1991–2020 climate normals.

Across a full year Bielsko-Biala averages 1,086 mm of rain, 26 days above 25 °C and 100 days below freezing.

Poland · 330 m elevation · population 176,515 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 23 °C
Coldest month January -4.9 °C
Driest month February 64 mm
Wettest month July 144 mm
Least cloud August 55 % cloud
Hottest on record August 34 °C
Coldest on record February -27 °C

What to expectBielsko-Biala through the year

Bielsko-Biala has a clear annual cycle: average daily highs run from 1.0 °C in January to 23 °C in August, a swing of 21 °C in mean temperature across the year.

Counted across a normal year, 26 days a year reach 25 °C, 3 of them reach 30 °C, 100 nights drop below freezing. The warmest reading in the 1991–2020 record is 34 °C, in August.

Rain is strongly seasonal. July averages 144 mm against 64 mm in February — 2.2 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	1.0 °C	66 mm	74 %
February	2.7 °C	64 mm	73 %
March	7.2 °C	73 mm	67 %
April	13.4 °C	75 mm	61 %
May	17.7 °C	122 mm	63 %
June	20.9 °C	126 mm	62 %
July	22.8 °C	144 mm	58 %
August	22.8 °C	106 mm	55 %
September	18.0 °C	102 mm	62 %
October	13.1 °C	77 mm	67 %
November	7.6 °C	68 mm	75 %
December	2.5 °C	65 mm	76 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	1.0 °C	-4.9 °C	-1.8 °C	12.9 °C	-25.8 °C	0	0	23
February	2.7 °C	-4.3 °C	-0.7 °C	14.6 °C	-26.8 °C	0	0	21
March	7.2 °C	-1.2 °C	3.0 °C	18.5 °C	-21.2 °C	0	0	17
April	13.4 °C	3.4 °C	8.6 °C	26.4 °C	-12.4 °C	0	0	6
May	17.7 °C	8.4 °C	13.4 °C	28.7 °C	-0.9 °C	1	0	0
June	20.9 °C	12.3 °C	16.9 °C	31.1 °C	3.8 °C	5	0	0
July	22.8 °C	14.3 °C	18.8 °C	32.6 °C	6.6 °C	9	1	0
August	22.8 °C	14.1 °C	18.6 °C	34.1 °C	6.2 °C	9	1	0
September	18.0 °C	10.1 °C	14.0 °C	32.5 °C	2.8 °C	1	0	0
October	13.1 °C	6.0 °C	9.4 °C	24.4 °C	-5.1 °C	0	0	2
November	7.6 °C	1.8 °C	4.6 °C	20.0 °C	-17.2 °C	0	0	10
December	2.5 °C	-2.8 °C	-0.2 °C	14.0 °C	-26.5 °C	0	0	20

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	66 mm	13	8.6 h/day	74 %	84 %	17 km/h
February	64 mm	12	10 h/day	73 %	82 %	17 km/h
March	73 mm	14	12 h/day	67 %	78 %	18 km/h
April	75 mm	13	14 h/day	61 %	73 %	16 km/h
May	122 mm	17	15 h/day	63 %	76 %	15 km/h
June	126 mm	16	16 h/day	62 %	77 %	14 km/h
July	144 mm	17	16 h/day	58 %	77 %	14 km/h
August	106 mm	13	14 h/day	55 %	76 %	13 km/h
September	102 mm	13	13 h/day	62 %	79 %	15 km/h
October	77 mm	11	11 h/day	67 %	82 %	16 km/h
November	68 mm	11	9.1 h/day	75 %	85 %	16 km/h
December	65 mm	12	8.1 h/day	76 %	85 %	17 km/h

How Bielsko-Biala compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Bielsko-Biala	23 °C	-4.9 °C	1,086 mm	26
Katowice · Poland	23 °C	-4.5 °C	747 mm	31
Ostrava · Czechia	24 °C	-4.1 °C	833 mm	34
Gliwice · Poland	24 °C	-4.1 °C	750 mm	35
Kraków · Poland	24 °C	-5.0 °C	781 mm	34

Planning a trip? See the best time to visit Bielsko-Biala.

QuestionsCommon questions about Bielsko-Biala’s climate

When is the best time to visit Bielsko-Biala?

That depends on what you want, so the honest answer is a comparison rather than a single month. June, July, August sit closest to 20 °C on average, August is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Bielsko-Biala get?

In August, the warmest month, daily highs average 23 °C. About 3 days a year pass 30 °C. The highest value in the 1991–2020 record is 34 °C.

How cold does it get in winter?

Nights average -4.9 °C in January, the coldest month. A normal year has 100 nights below freezing.

Which month is wettest in Bielsko-Biala?

July, averaging 144 mm over 17 days with rain. The driest month is February with 64 mm. The year as a whole averages 1,086 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Bielsko-Biala rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 49.822°, 19.047° , 330 m above sea level (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.