Necochea, Buenos Aires Province 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 01:00 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 America/Argentina/Buenos Aires local. Folk tradition, not a scientific forecast.

Next spring tide on Mon 18 May (range 2.3m). Last neap on Fri 15 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.

Necochea sits where the Río Quequén Grande reaches the Atlantic, 500 kilometres south of Buenos Aires. On the north bank of the river sits Quequén, the twin port town — Argentina's second-largest grain export terminal after Rosario, loading wheat and soy into Panamax bulk carriers on continuous rotation through the year. The port and the beach coexist in the same geography, the grain silos and ship cranes visible from the sand, which gives Necochea a working character that distinguishes it from the designed resort towns to the north. The Atlantic tidal regime at Necochea is semidiurnal with a mean spring range of 1.0 to 1.5 metres. A typical spring cycle runs from around 0.2 m at low to 1.4 m at high. The Quequén inlet bar — where the Río Quequén Grande crosses the shallows at the river mouth — is tide-sensitive: bar depth falls below 6 metres on neap low water, which is tight for a loaded Panamax. Harbour pilots time bulk carrier passages through the inlet to the flood, aiming to cross the bar within three hours of high water when tidal uplift adds a reliable 0.8 to 1.0 metres of depth. Port operations at Quequén are continuous, and the nightly sequence of bulk carriers working the entrance at tidal windows is visible from the Necochea beach promenade after dark — running lights on the vessels, the port crane lights, and the lighthouse at the river mouth. The Necochea beach itself runs 80 kilometres south of the river mouth without interruption — one of the longest continuous beaches in South America. The beach is open Atlantic, facing northeast, exposed to south and southwest swells from the Patagonian Southern Ocean fetch. Shore casting from this beach is productive across a long season. The primary targets are corvina (Micropogonias furnieri, the whitemouth croaker) and pejerrey (Odontesthes bonariensis, the Argentinian silverside). The corvina arrive close inshore on the incoming tide, running the long, shallow surf slope; the most reliable casting window is the last 90 minutes of the flood and the first 60 minutes of the ebb. Pejerrey school in the nearshore zone and respond to small metal lures on a light spinning rod — the rising tide concentrates them at the water's edge. Parque Miguel Lillo is a 23-metre dune system immediately west of the Necochea beach, now a protected natural park with walking and mountain-bike trails through the dunes and native coastal scrub. The park runs parallel to the beach for several kilometres, accessible from multiple entry points along the beach promenade. The highest dune points give a clear view south down the 80-kilometre beach run and north toward the Quequén port cranes. At low tide, the beach beneath the dunes is at its widest — the park's western dune face can be reached in dry-sand conditions only around low water on springs when the beach expands to its full width. The Río Quequén Grande has a run of peladilla (Percichthys trucha) — a native Patagonian perch — in the estuary in autumn (March through June). The peladilla move into the tidal section of the river on the flood, holding in the current breaks and eddy zones behind the river bend structures inside the port. Fly fishing for peladilla in the lower Quequén requires timing the approach to the flood window and reading the estuary structure; the fish are not large (typically 300 to 800 g) but are a distinctive target in an estuary environment that mixes grain ships and seabirds. Wind turbines — an aerogenerador farm — are visible south of town from the beach and from vessels passing the coast. The farm sits on the flat Buenos Aires pampas inland from the beach and is visible for 15 to 20 kilometres in clear conditions, becoming a navigation reference point for small boat operators. The town of Necochea itself is laid out on a grid behind the beach, without the designed forest character of Pinamar or the resort infrastructure of Mar del Plata. It functions as a working regional centre that also attracts summer beach visitors — the beach crowd is primarily from Buenos Aires Province's interior towns rather than from Buenos Aires city. The January and February peak fills the promenade; the rest of the year the beach is used mainly by locals, anglers, and walkers. Tide data for Necochea, Buenos Aires Province comes from the Open-Meteo Marine API, a gridded model product. Timing accuracy is ±45 minutes, height accuracy ±0.3 m — usable for trip planning, not for navigation.