Graz climate

Name: Graz
Address: AT

Graz is warmest in July, with average highs of 24 °C, and coldest in January, when nights average -5.3 °C. June is the wettest month (95 mm) and January the driest (27 mm). Figures are 1991–2020 climate normals.

Across a full year Graz averages 774 mm of rain, 38 days above 25 °C and 115 days below freezing.

Austria · population 303,270 · 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 July 24 °C
Coldest month January -5.3 °C
Driest month January 27 mm
Wettest month June 95 mm
Least cloud August 52 % cloud
Hottest on record August 36 °C
Coldest on record March -25 °C

What to expectGraz through the year

Graz has a clear annual cycle: average daily highs run from 3.4 °C in January to 24 °C in July, a swing of 21 °C in mean temperature across the year.

Counted across a normal year, 38 days a year reach 25 °C, 4 of them reach 30 °C, 115 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in August.

Rain is strongly seasonal. June averages 95 mm against 27 mm in January — 3.5 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	3.4 °C	27 mm	64 %
February	5.7 °C	33 mm	63 %
March	10.0 °C	44 mm	61 %
April	15.0 °C	53 mm	58 %
May	19.1 °C	87 mm	59 %
June	22.6 °C	95 mm	57 %
July	24.4 °C	85 mm	53 %
August	24.1 °C	94 mm	52 %
September	19.3 °C	85 mm	59 %
October	14.3 °C	65 mm	64 %
November	8.6 °C	59 mm	70 %
December	3.7 °C	45 mm	66 %

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	3.4 °C	-5.3 °C	-1.4 °C	13.8 °C	-22.4 °C	0	0	29
February	5.7 °C	-4.4 °C	0.4 °C	18.7 °C	-23.6 °C	0	0	24
March	10.0 °C	-0.6 °C	4.7 °C	20.8 °C	-24.8 °C	0	0	17
April	15.0 °C	3.7 °C	9.7 °C	25.3 °C	-7.3 °C	0	0	4
May	19.1 °C	8.4 °C	14.2 °C	29.8 °C	0.2 °C	2	0	0
June	22.6 °C	12.0 °C	17.9 °C	32.8 °C	2.5 °C	8	1	0
July	24.4 °C	13.8 °C	19.7 °C	34.4 °C	5.3 °C	14	1	0
August	24.1 °C	13.9 °C	19.3 °C	35.9 °C	4.9 °C	12	2	0
September	19.3 °C	9.8 °C	14.7 °C	30.1 °C	1.0 °C	1	0	0
October	14.3 °C	5.5 °C	9.8 °C	24.4 °C	-10.9 °C	0	0	2
November	8.6 °C	1.2 °C	4.6 °C	20.3 °C	-18.2 °C	0	0	12
December	3.7 °C	-4.0 °C	-0.5 °C	13.0 °C	-23.1 °C	0	0	27

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	27 mm	6	8.9 h/day	64 %	80 %	9.0 km/h
February	33 mm	6	10 h/day	63 %	75 %	11 km/h
March	44 mm	8	12 h/day	61 %	72 %	12 km/h
April	53 mm	10	14 h/day	58 %	70 %	13 km/h
May	87 mm	13	15 h/day	59 %	72 %	12 km/h
June	95 mm	13	16 h/day	57 %	73 %	11 km/h
July	85 mm	12	16 h/day	53 %	73 %	11 km/h
August	94 mm	11	14 h/day	52 %	75 %	9.9 km/h
September	85 mm	10	13 h/day	59 %	78 %	10 km/h
October	65 mm	9	11 h/day	64 %	82 %	9.7 km/h
November	59 mm	9	9.4 h/day	70 %	84 %	9.2 km/h
December	45 mm	8	8.5 h/day	66 %	82 %	8.7 km/h

How Graz 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
Graz	24 °C	-5.3 °C	774 mm	38
Ljubljana · Slovenia	25 °C	-3.1 °C	1,175 mm	47
Zagreb · Croatia	27 °C	-2.4 °C	882 mm	72
Vienna · Austria	26 °C	-3.0 °C	657 mm	54
Linz · Austria	24 °C	-3.2 °C	835 mm	44
Salzburg · Austria	24 °C	-5.3 °C	1,776 mm	37
Trieste · Italy	28 °C	1.2 °C	1,489 mm	72

Where Graz ranks

Ranking	Position	Value
The driest places in Europe in January	40thof 50	27 mm

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

QuestionsCommon questions about Graz’s climate

When is the best time to visit Graz?

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, July is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Graz get?

In July, the warmest month, daily highs average 24 °C. About 4 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average -5.3 °C in January, the coldest month. A normal year has 115 nights below freezing.

Which month is wettest in Graz?

June, averaging 95 mm over 13 days with rain. The driest month is January with 27 mm. The year as a whole averages 774 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 Graz 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
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.