The Veneto month by month — at a glance
Hover each month for the summary. Click to pin it.
Almost everyone arrives in the Veneto with a climate in mind that is not its own: the Mediterranean one of central and southern Italy, with dry summers and autumn and winter rain. Here the opposite happens, and quite emphatically.
01 Twice the rain in summer
The figures for Belluno, on the edge of the Dolomites, leave no room for interpretation. June, July and August add up to 337 millimetres of rain. December, January and February add up to 168. Summer receives exactly twice as much as winter, and the driest month of the year is January, with 45 millimetres.
The annual total is 1,128 millimetres, a figure that surprises anyone thinking of Italy: more than falls on London. And the wettest month is not an autumn one but a spring one: May, with 130 millimetres.
Key moments at a glance
22.4 degrees, the afternoon storm weakens and the air clears. Everything is still open up high.
130 millimetres in the mountains. The countryside is spectacular and the sky almost always closed.
45 millimetres: the driest month. Genuinely cold, but the walls are sharp from the valley.
The plain's wettest month, huts closed and no reliable snow yet.
02 Why it rains when it is hot
The mechanism has nothing to do with the Mediterranean one. In southern Italy the rain arrives in winter with Atlantic fronts and in summer a high-pressure system blocks it. Here, by contrast, much of the precipitation is convective: it is manufactured locally, by the heat of the day itself.
The sun heats the slopes, humid air from the plain rises up the valleys, cools as it climbs and unloads. The hotter it is, the more energy that cycle has. That is why the wettest months coincide with the warmest, which is exactly the opposite of what most arrivals expect.
03 The storm has a timetable
And here is the practical consequence, which is good news. Convective rain is not a whole day of water: it is a discharge of an hour or two that organises through the morning and falls in the afternoon. Summer mornings in the Dolomites usually dawn clear.
The rule anyone who walks here uses is to start early and be back by mid-afternoon. It is not a picturesque habit: at altitude the storm brings lightning, and a ridge or a via ferrata at four in the afternoon on a July day is exactly where you should not be.
Here you do not plan the day by the day's forecast. You plan it by the hour the storm usually breaks.
04 The plain is not Mediterranean either
You might think the pattern is a mountain matter and that down below the usual Italian climate rules. It does not. Verona receives 831.7 millimetres a year, and its driest month is January with 42.7; in July it gets 62.9. There is no summer drought on the plain either.
What does change down below is how it feels. Verona reaches an average high of 30.4 degrees in July and August, with high humidity and still air, and that heavy heat is considerably more uncomfortable than the mountains' 26.5. It is why people from the plain go up in summer, not the other way round.
In winter the plain has its own drawback: persistent fog, which can last for days and leaves the cities under a grey lid while a hundred kilometres away the mountains are in full sun.
05 September and October, the prize
The best window of the year is not summer but early autumn. In September the rain drops to 98 millimetres, the temperature to 22.4 degrees and, above all, convection loses force: the afternoon storm stops being daily and the air clears.
October adds the colour. The larches of the Dolomites, deciduous conifers, turn golden for a couple of weeks before dropping their needles, and the vineyard hills finish the harvest. It rains 116 millimetres, but spread across day-long fronts rather than afternoon discharges.
06 How to pick the week
If the trip mixes mountains and cities, September is the answer and the first half of October the second. You avoid the plain's heavy heat, the mountains' daily storm and the Italian August holidays, which are what fill and inflate the valleys.
If summer is your only option, head for the mountains and adjust the timetable: start early, eat up high and come down mid-afternoon. And if you are going to the cities, schedule indoor visits for the middle hours, when the plain's heat really bites.
Avoid November, which gathers every drawback at once: it is the plain's wettest month, the mountain huts have closed and the snow has not yet settled. And if the aim is to see the walls sharply from below, the clearest air of the year is January's.
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