Weather in Graz in June
Austria · 20-year averages, June
A good month. June works. It is not the peak, but nothing about it fights you. You should expect rain on 15 days of the month, which is more days wet than dry.
June ranks 4 of 12 in Graz: past the worst of the year but short of September, which is the month to book if the dates are open.
Rain on 15 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.
What the averages hide
Averages flatten a month, and this one hides a few things: 4 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest June day reached 36.7 °C and the coldest night fell to 2.7 °C, and the wettest single day dropped 42 mm — roughly 40% of the month's rain in one day.
June is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest June on record still delivered 181 mm against 58 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 104 mm average is a reasonable planning figure, not a promise.
Wind is light at 6.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 68%.
How June sits in the year
The month is on the way up: 4.5 °C warmer than May, and July adds another 2.3 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.
Daylight in June
June is at or near the longest days of Graz's year: 15.9 hours of daylight, holding steady all month. Evenings are the real gain — dinner outdoors still happens in full light.
An inland climate
With no coast nearby, the year swings a fair way — 31.3 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.
How busy it gets
Busy. Popular without being frantic; book the things you care about, improvise the rest.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
June in Graz versus nearby
If Graz is one option among several, the nearby comparison is worth making. Villach is close enough to be a coin toss — within a degree on temperature, 2 days more rain. Zagreb is close enough to be a coin toss — within a degree on temperature, 2 days less rain.
So: June is effectively as good as it gets here — 6 points behind September, which is inside the margin where the weather stops being the deciding factor and price starts being it.
Every month in Graz
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 3.4 | -3.9 | 7 | 32 | 87 | 8.9 | 30 |
| February | 5.5 | -3 | 8 | 40 | 84 | 10.3 | 30 |
| March | 10.7 | 0.2 | 8 | 43 | 78 | 11.8 | 56 |
| April | 16.2 | 4.8 | 10 | 52 | 73 | 13.5 | 70 |
| May | 20.6 | 9.4 | 15 | 90 | 71 | 15 | 73 |
| June | 25.1 | 13.8 | 15 | 104 | 68 | 15.9 | 72 |
| July | 27.4 | 15.8 | 16 | 107 | 64 | 15.6 | 68 |
| August | 26.7 | 15.4 | 14 | 110 | 66 | 14.3 | 73 |
| September | 21.3 | 10.6 | 11 | 96 | 73 | 12.6 | 78 |
| October | 16.2 | 6 | 9 | 61 | 81 | 11 | 71 |
| November | 9.7 | 1.9 | 8 | 56 | 87 | 9.4 | 48 |
| December | 4.2 | -2.7 | 8 | 42 | 88 | 8.5 | 30 |
Planning the rest of the trip
- Flight time to Graz how long you are actually in the air
- Graz time zone and the difference from home
- Days until your trip count down to the departure date