Đồ Sơn 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 11:00 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 Asia/Ho Chi Minh local. Folk tradition, not a scientific forecast.

Last spring tide on Thu 07 May (range 2.8m). Next neap on Tue 12 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.

Đồ Sơn is a narrow limestone peninsula extending 5 km south from the Red River Delta plain into the Gulf of Tonkin, 20 km from central Hải Phòng. It has been Hải Phòng's beach resort since the French colonial period — the Grand Hôtel de Đồ Sơn opened in the 1920s — and today its three beaches (Khu I, II, and III from north to south) are the closest seaside escape for Hanoi residents. The tidal range at Đồ Sơn is approximately 3.0 m, diurnal: one high and one low per day. The character of the beach changes entirely with the tide. At low water, the tidal flat extends 300 to 500 m from the beach face: grey-brown sand and mud, channelled by the drainage from the limestone peninsula, with clam and cockle beds exposed in the lower flat. The stilt restaurants along the beach access this environment directly — platforms and bamboo walkways extend out over the flat, and the kitchen handles whatever the flat produces: nghêu (Asian clams), cua biển (blue crab), tôm sú (tiger prawns), and ốc hương (spiny top shell). At high water, the flat disappears, the sea comes to the beach face, and the stilt restaurants are surrounded by water; the boardwalk access is ankle-deep or submerged. Timing the meal to low water is both practical and the local way. The peninsula's limestone spine rises to 125 m above sea level at Vạn Hoa, giving panoramic views over the outer Gulf of Tonkin south toward the Bạch Long Vĩ islands and north toward the Hải Phòng harbour approaches. The view from the clifftop at Khu III is one of the better coastal lookouts in the northern Vietnam delta region — the tidal flat visible at low water, the open gulf at high. The water at Đồ Sơn is warm from May through October (27 to 30°C at peak summer) but turbid — the Red River delivers a substantial sediment load into the southern Gulf of Tonkin, and the plume extends east and south from the delta. The visibility in the water is typically 0.5 to 1.5 m at best; snorkelling is not productive. The beach is used for swimming in summer, with crowds at peak weekends (June–August) concentrated at Khu I and II. The buffalo fighting festival (lễ hội chọi trâu) at Đồ Sơn, held on the ninth day of the eighth lunar month (typically October), is the most distinctive cultural event on this section of the coast. Two buffalo fight until one submits; the winning animal is sacrificed afterward in a traditional ceremony. The festival is deeply rooted in the local fishing community's belief that strong buffalo bring good fortune for the fishing season. It draws several thousand visitors and is on Vietnam's national intangible cultural heritage list. Tide predictions on this page come from Open-Meteo Marine, a global ocean model. Accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height — model-derived, not from a local gauge. For authoritative official tide predictions, NAVIC (Vietnam Register) and the General Department of Seas and Islands (GOSI) publish tide tables for Vietnamese coastal waters.