Graz climate
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 | 40th of 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
- Data point
- 47.067°, 15.442° (the coordinates the reanalysis values are taken for)
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
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.