Weather in Graz in April

A good month. April is a solid month to be in Graz. Highs average 16.2 °C, lows 4.8 °C, and rain falls on 10 days — nothing in the month is working against you.

April ranks 6 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 10 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 16.2 °C days and 4.8 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 3 nights fall below freezing. Across the twenty years measured, the hottest April day reached 27.7 °C and the coldest night fell to -4.3 °C, and the wettest single day dropped 28 mm — roughly 54% of the month's rain in one day.

April is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest April on record still delivered 94 mm against 10 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 52 mm average is a reasonable planning figure, not a promise.

Wind is light at 6.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 73%.

How April sits in the year

The month is on the way up: 5.5 °C warmer than March, and May adds another 4.4 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short. Rain is the thing that moves: May brings 5 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in April

13.5 hours of daylight, gaining 1.6 hours across the month. That is between Graz's extremes of 15.9 and 8.5 hours, so days are long enough not to constrain the plan.

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.

April in Graz versus nearby

If Graz is one option among several, the nearby comparison is worth making. Villach is the weaker option in April — within a degree on temperature, 3 days more rain. Zagreb is close enough to be a coin toss — within a degree on temperature, the same number of rain days.

So: April works, with September the better month by 8 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Graz

See all twelve months in Graz, or where else to go in April.