Genoa tide times

Genoa sits at the apex of the Golfo di Genova, the deepest indentation in the northern Ligurian coastline, with the Apennines rising steeply inland within a few kilometres of the waterfront and the sea opening southwest toward the open Ligurian Basin. It is a city shaped almost entirely by its relationship with the harbour — the medieval merchant republic of Genoa, the Superba, controlled trade routes across the western Mediterranean from the 12th to the 17th centuries, and the old town that earned its UNESCO listing in 2006 runs from the waterfront up through the densely packed caruggi (alleyways) to the Palazzi dei Rolli, the aristocratic palace network where foreign dignitaries lodged on rotation. 15 metres.

In absolute terms, this barely registers as a tide at all compared to Cadiz or Santander on Spain's Atlantic coast — the astronomical tide at Genoa is smaller than the height of a typical beach step. This is not an oversight in the data; it is the character of the Mediterranean. The Ligurian Sea is a semi-enclosed basin within a semi-enclosed sea.

The Atlantic tidal signal enters the Mediterranean through the Strait of Gibraltar 2,000 kilometres to the southwest, and by the time it reaches the Gulf of Genoa at the far northern end of the Ligurian Sea, the signal has been attenuated by the basin geometry to the values observed. What actually moves water at Genoa — what determines whether the waterfront is higher or lower than expected — is not the astronomical tide but meteorological forcing. 6 metres above the predicted astronomical tide — more than the entire tidal range.

A strong Tramontane from the Alps can drive the opposite effect, pushing water offshore and dropping the level below prediction. Mediterranean seiches — standing wave oscillations in the enclosed basin driven by rapid atmospheric pressure changes — can produce rapid water level oscillations of 10 to 30 centimetres over periods of a few hours that have no relationship to the tidal schedule. All of this means that for practical coastal planning at Genoa, the tide table is background context, not the operating variable.

The Porto Antico — the old harbour redesigned by Renzo Piano for the 1992 Columbus quincentenary celebrations — is the leisure face of Genoa's waterfront: the Bigo crane structure, the glass-and-steel Biosfera sphere containing a tropical garden, the Acquario di Genova (the largest public aquarium in Italy), and the ferry terminals where services depart for Sardinia, Sicily, Corsica, and Barcelona. The working port to the east is one of the busiest in the Mediterranean, handling container, bulk, and ro-ro traffic. 4 metre astronomical tide; harbour operations here are governed by vessel draft, berth availability, and wind, not by tidal state.

East of Genoa, the Riviera di Levante runs through Nervi, Bogliasco, Camogli, and Santa Margherita Ligure before reaching the Portofino headland and the protected marine area that surrounds it. Portofino's anchorage is small and sought after by yacht crews working the Italian coast, and the calm protected water behind the headland holds good dive conditions — octopus, grouper, scorpionfish, and occasional lobster — because the Marine Protected Area since 1999 has rebuilt fish populations on the submarine rock formations. The MPA boundaries are fixed and do not vary with tide.

Further east, the Cinque Terre villages sit on cliff faces with no road connection and limited beach access. The tiny landing stages below Riomaggiore, Manarola, and Vernazza are operational only in calm weather, and the determining variable for boat access is sea state and swell, not tide height. The predictions on this page come from Open-Meteo Marine, a gridded global ocean model.

3 metres on height. 3 metres is roughly equal to the entire tidal range — the model output is still useful as a reference for the astronomical signal, but actual water level at any given moment is driven as much by wind and pressure as by tide. The authoritative Italian sea-level record is maintained by ISPRA (Istituto Superiore per la Protezione e la Ricerca Ambientale), which operates the national tide gauge network; the Genoa gauge is one of the most complete Mediterranean sea-level records in existence.