Naples (Bay) tide times

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived.

Model-derived from a global ocean grid. Useful indication; expect about ±45 minutes on average vs. a local harmonic gauge, individual stations vary widely. See /methodology for per-region detail. Not for navigation.

Conditions as of 06:00 local time. Refreshes daily.

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived. · Not for navigation.

The angler tradition for major/minor fishing windows: major ≈3-hour windows around moon transit and opposition; minor ≈2-hour windows around moonrise and moonset. Times are Europe/Rome local. Folk tradition, not a scientific forecast.

Next spring tide on Mon 18 May (range 0.4m). Last neap on Sat 16 May. Next neap on Thu 21 May.

Spring tides cluster around new and full moons (biggest swings). Neap tides land on quarter moons (smallest swings). See the spring tide and neap tide glossary entries for the why.

Naples sits at the head of one of the most photographed bays in the Mediterranean, ringed by the Sorrentine Peninsula to the south, Capri at the seaward edge, and the Phlegraean Fields and the islands of Procida and Ischia to the west. Vesuvius dominates the eastern shore and the volcanic geology of the bay reaches under the seafloor and into the inland Campi Flegrei caldera. The tide here is the small Mediterranean signal characteristic of the Tyrrhenian Sea: mean range at Naples is about 0.3 metres, with spring tides reaching close to 0.4 and neaps near flat. Most days the height swing barely registers in the harbour because pressure changes from passing weather systems and wind setup from the local sea-breeze regime each shift water level by similar amounts. The volcanic geometry adds a slow vertical land-motion signal — bradyseism in the Phlegraean Fields, the same phenomenon that flooded the Roman ruins at Pozzuoli over centuries. The bay's coastal cliffs, the deep underwater profile that drops quickly to several hundred metres, and the islands at the seaward edge make the bay much more sensitive to swell, wind, and pressure than to the lunar tide. Fishers working the Capri grottoes, sailors crossing to Procida and Ischia, swimmers at the Sorrento marinas, and snorkellers at the Faraglioni rocks at Capri all read the wider weather pattern more than the tide table. Open-Meteo Marine drives the gridded predictions on this page; ISPRA's Mareografico Nazionale runs the historic Naples gauge.