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Graz Weather by Month
Average temperatures, rainfall and humidity for Graz, Austria, month by month, built from OpenWeather's historical records. Use it to see what a typical Graz month looks like before you travel — then check the live Graz forecast for the days ahead.
Warmest month
July
27°C average high
Coolest month
January
-4°C average low
Wettest month
May
106 mm of rain
Driest month
January
20 mm of rain
Average temperature and rainfall in Graz by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 4°C | -4°C | -17°C / 17°C | 20 mm | 83% | 6 km/h |
| February | 8°C | -2°C | -19°C / 21°C | 34 mm | 78% | 6 km/h |
| March | 12°C | 1°C | -20°C / 23°C | 52 mm | 70% | 7 km/h |
| April | 17°C | 5°C | -4°C / 31°C | 41 mm | 66% | 8 km/h |
| May | 20°C | 9°C | 0°C / 32°C | 106 mm | 71% | 8 km/h |
| June | 25°C | 14°C | 6°C / 36°C | 91 mm | 70% | 11 km/h |
| July | 27°C | 15°C | 3°C / 37°C | 85 mm | 69% | 10 km/h |
| August | 27°C | 15°C | 6°C / 38°C | 89 mm | 71% | 6 km/h |
| September | 21°C | 11°C | 0°C / 33°C | 99 mm | 75% | 6 km/h |
| October | 16°C | 6°C | -4°C / 27°C | 53 mm | 80% | 5 km/h |
| November | 9°C | 2°C | -7°C / 22°C | 51 mm | 84% | 6 km/h |
| December | 5°C | -2°C | -14°C / 17°C | 28 mm | 85% | 6 km/h |
Best time to visit Graz
The most comfortable time to visit Graz is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around May, totalling about 749 mm a year.
Travellers who prefer heat should aim for July, when highs average 27°C. May is the month to avoid if rain would spoil your plans — it averages 106 mm, roughly 5× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Graz forecast for what is happening now.