Delta Diary
Seasons of the Delta 3 September 2026

Barefoot at dawn in Caleri: the Delta coastline before the heat

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Vegetated dunes at dawn at Porto Caleri, on the coast of the Delta del Po in Veneto.

In September the sand at dawn is still cold. By nine you can no longer walk on it barefoot, but in the first hours of the day it keeps the temperature of the night, and walking on it is a different thing from doing so at midday in summer.

The "Barefoot at dawn in Caleri" outing comes from this practical detail, not from a poetic idea. Walking barefoot only works within a narrow time window, and in this season that window widens: dawn comes later, the heat more slowly.

What you cross

Caleri lies on the coast, at the northern end of the delta system, where the shoreline is still a living dune environment and not a row of beach clubs. Walking from the sea inland you cross clearly distinct belts, one after another, within a few hundred metres.

The passage from the dunes into the pine wood on the Caleri coastline.

First the open beach. Then the young dunes, held together by marram grass, the plant that grows while being buried and the reason the dunes stand at all. Then the fixed dunes, with juniper and sea buckthorn. Then the pine wood, and behind it the Caleri lagoon: brackish water and salt marshes.

It is a rare sequence on the northern Adriatic, because almost everywhere else it was erased by the building of the seaside resorts. Here it survived, and that is why the coastal botanical garden of Porto Caleri was established on this exact spot.

It is worth understanding how it works, because you notice it while walking through. Each belt has different conditions — salt load, wind exposure, water availability — and each has its own plants, which would not survive elsewhere. On the open dune only what tolerates being sandblasted and salt-burnt survives. Thirty metres further back, sheltered by the first crest, the vegetation changes completely. It is not a garden in the sense of something planted by someone: it is an order that formed by itself, and that the wind renegotiates every winter.

Why at dawn

Besides the cold sand there are three concrete reasons.

The first is the raking light, which on the dunes makes the shape of the ground visible — at midday the same dunes look flat. The second is the wildlife: the tracks left overnight on the sand are still intact before anyone walks by, and the birds are active. The third is the silence, which on the coast does not last long: by mid-morning the traffic of the long summer arrives.

How to prepare

Walking barefoot on dry sand is harder work than it looks: the foot sinks and the calf works. Anyone untrained feels it the next day. Bring shoes in your backpack and put them back on in the pine wood stretches, where the ground is needles and cones.

You also need a sweatshirt — at dawn, by the sea, it is several degrees colder than inland — water, and a hat for the way back. Mosquitoes are fading in September, but in the belt behind the dunes they have not gone.

Before and after

The outing starts early, and that is the only real constraint. Those arriving that same morning from far away leave at night; those sleeping in the Delta get up early but sleep in a bed. That is why most people who book this kind of experience stay at least one night nearby.

The return usually falls before lunch and leaves the rest of the day free — which in the Delta in September almost always means bike or boat.

Barefoot at dawn in Caleri

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