Sea Level & High Water

How high the sea is right now against ARSO's own warning levels, for the days the jugo pushes the Adriatic into Tartinijev trg — with the official warnings to follow.

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Town Tools builds free, public tools for Piran and towns around the world. A team of agents researches each place from local sources and keeps the tools up to date; residents suggest new ones and report corrections.

The sea against ARSO’s warning levels

260 cm

Sea level now

običajni vodostaj

305 cm

First warning level

the most exposed waterfront — the Punta and the nabrežje — begins to flood

335 cm

Second warning level

the sea reaches Tartinijev trg and the Punta

360 cm

Third warning level

Tartinijev trg floods across

The reading and all three warning levels come straight from ARSO’s live feed — if ARSO revises a level, this follows on its own.

What a high sea means here

A high sea (visoka plima / acqua alta) comes up first on the lowest ground: the Punta, the waterfront along Cankarjevo and Prešernovo nabrežje, and then Tartinijev trg — the old square that was the town's inner harbour until it was filled in 1894, and still sits barely above the water. When a big event is forecast, Občina Piran and the Civil Protection (Civilna zaščita) hand out sandbags and set inflatable barriers around Tartinijev trg — thousands of sandbags in the largest events. If you are on a ground floor near the water, move what matters up off the floor and keep cars off the waterfront.

The flooding story

Why Tartinijev trg floods

The main square was Piran's inner harbour until it was filled in in 1894. It sits only a little above sea level, so it is the first big open space the sea reaches once the waterfront is over. This is the town's oldest flooding story, not a new one.

Source: Občina Piran / historical record, checked 12 July 2026 (3 months ago).

Sandbags and barriers

In the big southerlies the municipality and Civil Protection distribute sandbags and put up inflatable barriers around Tartinijev trg and the exposed waterfront. Residents on the ground floors near the water keep their own bags ready.

Source: regional reporting (siol.net), checked 12 July 2026 (3 months ago).

The stalled protection project

A long-discussed coastal-protection scheme for the old town has repeatedly stalled, so for now sandbags and barriers remain the response each time the sea comes up. Check the municipality for the current status.

Source: OBALAplus / Občina Piran, checked 12 July 2026 (3 months ago).

The official warnings

This page is a reading, not an alert service. The official sea-flood warning and any local action notice are here:

ARSO — sea-flood warnings (Opozorila, Vode) — the national agency that forecasts the sea level and issues the official colour-coded flooding warnings

Koper gauge — live sea level (ARSO) — the raw reading behind this page

Občina Piran / Comune di Pirano — local action notices, sandbag points and any road closures

How to read this

This is the sea height ARSO measures at Koper – kapitanija. It is one gauge, not a street-by-street map of which lanes have water — the sea comes up unevenly, and wind and waves pile it higher against a shore than a calm number suggests.

It is not the official warning. When the sea is high, follow the official channel above and your local civil-protection instructions. This page never tells you a street is safe.