Graz climate
Graz (Austria) has a warm-summer humid continental climate (Köppen Dfb). The average temperature over the year is 10 °C51 °F, and about 832 mm33 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Graz climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 337 | −524 | −130 | 321.2 | 26 |
| Feb | 541 | −426 | 133 | 401.6 | 23 |
| Mar | 1050 | 031 | 541 | 431.7 | 16 |
| Apr | 1661 | 541 | 1051 | 522.0 | 4 |
| May | 2169 | 1049 | 1559 | 903.5 | 0 |
| Jun | 2578 | 1457 | 2067 | 1044.1 | 0 |
| Jul | 2882 | 1661 | 2271 | 1074.2 | 0 |
| Aug | 2780 | 1560 | 2170 | 1104.3 | 0 |
| Sep | 2170 | 1051 | 1660 | 963.8 | 0 |
| Oct | 1660 | 542 | 1051 | 612.4 | 2 |
| Nov | 948 | 134 | 541 | 562.2 | 11 |
| Dec | 438 | −326 | 032 | 421.7 | 24 |
| Year | 2882 | −524 | 1051 | 83233 | 106 |
“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 | 87% | 76% | 1.2 | 8:54 |
| Feb | 84% | 76% | 2.0 | 10:13 |
| Mar | 78% | 72% | 3.1 | 11:46 |
| Apr | 73% | 68% | 4.2 | 13:32 |
| May | 71% | 74% | 4.8 | 15:03 |
| Jun | 68% | 72% | 5.3 | 15:53 |
| Jul | 64% | 67% | 5.3 | 15:32 |
| Aug | 66% | 62% | 4.7 | 14:13 |
| Sep | 73% | 67% | 3.4 | 12:29 |
| Oct | 81% | 68% | 2.4 | 10:46 |
| Nov | 87% | 75% | 1.3 | 9:16 |
| Dec | 88% | 75% | 1.0 | 8:31 |
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 Graz is like
The warmest month is July, with an average high of 28 °C82 °F and a low of 16 °C61 °F. The coldest is January, when highs average 3 °C37 °F and lows −5 °C24 °F. Seasons are strongly marked: the warmest month is on average 22.6 °C40.7 °F warmer than the coldest.
Annual precipitation is moderate at about 832 mm33 in. The wettest three-month stretch is June–August, which brings 39% of the annual total. The wettest month is August (110 mm4.3 in), the driest is January (32 mm1.2 in).
Relative humidity ranges from 64% in July to 88% in December. The clearest skies (lowest average cloud amount, 62%) are typical of August. Average wind speed near the ground ranges from 5 km/h (3 mph) in November to 7 km/h (4 mph) in March. Daylight lasts from about 8.5 hours in December to 15.9 hours in June.
A lasting snow cover is typical in December–February. In those months the average snow depth in the reanalysis exceeds 10 cm. It is deepest in January, at about 16 cm.
Best time to visit Graz
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September. Average highs then reach 21 °C69 °F to 28 °C82 °F. Precipitation is 90 mm3.5 in to 110 mm4.3 in per month.
The most challenging month is January, which is cold, with average highs of 3 °C37 °F.
Comfort score: months are ranked by how close they come to an ideal. That means 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 Graz
- Winter (December–February) — highs 337 to 5 °C41 °F, lows −524 to −3 °C26 °F, about 38 mm1.5 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 1050 to 21 °C69 °F, lows 031 to 10 °C49 °F, about 62 mm2.4 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2578 to 28 °C82 °F, lows 1457 to 16 °C61 °F, about 107 mm4.2 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Autumn (September–November) — highs 948 to 21 °C70 °F, lows 134 to 10 °C51 °F, about 71 mm2.8 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Graz compares
The nearest larger place is Vienna, about 145 km to the northeast. Compared with it, Graz is on average 0.6 °C1.1 °F cooler. It receives 13% more precipitation (832 mm33 in vs 737 mm29 in). The difference is largest in December (0.8 °C1.4 °F cooler).
World Climates covers 6 places in Austria. By annual mean temperature, Graz is the 3rd warmest of them. By annual precipitation, it is the 5th wettest. See all of them on the Austria climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Sibiu (Romania, Dfa), Prague (Czechia, Dfb) and Bratislava (Slovakia, Dfa).
Nearby places
- Climate in Klagenfurt am Wörthersee 99 km · 10 °C51 °F · 1,060 mm42 in
- Climate in Ljubljana 134 km · 11 °C52 °F · 1,051 mm41 in
- Climate in Vienna 145 km · 11 °C52 °F · 737 mm29 in
- Climate in Zagreb 145 km · 11 °C53 °F · 906 mm36 in
- Climate in Linz 163 km · 10 °C50 °F · 881 mm35 in
- Climate in Bratislava 173 km · 11 °C52 °F · 636 mm25 in
- Climate in Győr 179 km · 11 °C52 °F · 594 mm23 in
- Climate in Salzburg 198 km · 10 °C49 °F · 1,262 mm50 in
Frequently asked questions
What is the warmest month in Graz?
July is the warmest month in Graz. Its average high is 28 °C (82 °F) and its average low is 16 °C (61 °F).
What is the coldest month in Graz?
January is the coldest month. Its average high is 3 °C (37 °F) and its average low is -5 °C (24 °F).
When does it rain the most in Graz?
August is the wettest month with about 110 mm (4.3 in) of precipitation. January is the driest with about 32 mm (1.2 in).
What is the best time to visit Graz?
Judging by long-term averages, the most comfortable months are May–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. The gaps are largest 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.
The grid cell’s average elevation is 424 m, while Graz lies at about 362 m. Temperatures on this page were therefore adjusted by +0.4 °C0.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.