Gliwice climate

Name: Gliwice
Address: PL

Gliwice is warmest in August, with average highs of 24 °C, and coldest in January, when nights average -4.1 °C. July is the wettest month (101 mm) and February the driest (42 mm). Figures are 1991–2020 climate normals.

Across a full year Gliwice averages 750 mm of rain, 35 days above 25 °C and 93 days below freezing.

Poland · 200 m elevation · population 198,835 · 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 24 °C
Coldest month January -4.1 °C
Driest month February 42 mm
Wettest month July 101 mm
Least cloud August 54 % cloud
Hottest on record August 35 °C
Coldest on record January -27 °C

What to expectGliwice through the year

Gliwice has a clear annual cycle: average daily highs run from 1.1 °C in January to 24 °C in August, a swing of 21 °C in mean temperature across the year.

Counted across a normal year, 35 days a year reach 25 °C, 5 of them reach 30 °C, 93 nights drop below freezing. The warmest reading in the 1991–2020 record is 35 °C, in August.

Rain is strongly seasonal. July averages 101 mm against 42 mm in February — 2.4 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	1.1 °C	47 mm	75 %
February	3.1 °C	42 mm	73 %
March	7.9 °C	52 mm	67 %
April	14.1 °C	51 mm	59 %
May	18.5 °C	79 mm	62 %
June	21.7 °C	82 mm	60 %
July	23.8 °C	101 mm	56 %
August	23.8 °C	73 mm	54 %
September	18.8 °C	72 mm	61 %
October	13.4 °C	56 mm	67 %
November	7.6 °C	51 mm	75 %
December	2.5 °C	46 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	1.1 °C	-4.1 °C	-1.4 °C	12.2 °C	-26.9 °C	0	0	22
February	3.1 °C	-3.5 °C	-0.1 °C	14.9 °C	-25.8 °C	0	0	20
March	7.9 °C	-0.4 °C	3.7 °C	19.3 °C	-18.3 °C	0	0	16
April	14.1 °C	4.2 °C	9.4 °C	26.9 °C	-9.3 °C	0	0	4
May	18.5 °C	9.1 °C	14.1 °C	29.7 °C	-1.9 °C	2	0	0
June	21.7 °C	12.8 °C	17.6 °C	33.5 °C	4.7 °C	7	1	0
July	23.8 °C	14.8 °C	19.5 °C	34.1 °C	7.6 °C	12	2	0
August	23.8 °C	14.7 °C	19.4 °C	35.2 °C	7.8 °C	12	2	0
September	18.8 °C	10.7 °C	14.7 °C	33.2 °C	2.6 °C	2	0	0
October	13.4 °C	6.4 °C	9.7 °C	23.9 °C	-3.7 °C	0	0	2
November	7.6 °C	2.1 °C	4.8 °C	19.7 °C	-13.4 °C	0	0	9
December	2.5 °C	-2.3 °C	0.2 °C	14.5 °C	-24.6 °C	0	0	19

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	47 mm	11	8.5 h/day	75 %	84 %	21 km/h
February	42 mm	10	10 h/day	73 %	81 %	21 km/h
March	52 mm	11	12 h/day	67 %	75 %	21 km/h
April	51 mm	10	14 h/day	59 %	70 %	19 km/h
May	79 mm	13	15 h/day	62 %	72 %	18 km/h
June	82 mm	13	16 h/day	60 %	73 %	17 km/h
July	101 mm	14	16 h/day	56 %	72 %	17 km/h
August	73 mm	11	15 h/day	54 %	71 %	16 km/h
September	72 mm	11	13 h/day	61 %	75 %	18 km/h
October	56 mm	10	11 h/day	67 %	80 %	19 km/h
November	51 mm	10	9.0 h/day	75 %	84 %	20 km/h
December	46 mm	10	8.1 h/day	76 %	85 %	21 km/h

How Gliwice 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
Gliwice	24 °C	-4.1 °C	750 mm	35
Katowice · Poland	23 °C	-4.5 °C	747 mm	31
Ostrava · Czechia	24 °C	-4.1 °C	833 mm	34
Bielsko-Biala · Poland	23 °C	-4.9 °C	1,086 mm	26

Planning a trip? See the best time to visit Gliwice.

QuestionsCommon questions about Gliwice’s climate

When is the best time to visit Gliwice?

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 Gliwice get?

In August, the warmest month, daily highs average 24 °C. About 5 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average -4.1 °C in January, the coldest month. A normal year has 93 nights below freezing.

Which month is wettest in Gliwice?

July, averaging 101 mm over 14 days with rain. The driest month is February with 42 mm. The year as a whole averages 750 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 Gliwice 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: 50.298°, 18.677° , 200 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.