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 23:00 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 that rates each day for fish-bite likelihood using moon transits and rise/set. One to five stars, not a scientific forecast.

• Mon
  ★★★★★
• Tue
  ★★★★★
• Wed
  ★★★★★
• Thu
  ★★★★★
• Fri
  ★★★★★
• Sat
  ★★★★★
• Sun
  ★★★★★

Next spring tide on Sun 03 May (range 0.8m). Next neap on Wed 29 Apr.

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.

Da Nang fronts the South China Sea on Vietnam's central coast, with the long curve of My Khe and Non Nuoc beaches running south from the Han River mouth to the Marble Mountains and the Son Tra peninsula sheltering the working harbour to the north. The tide here is a small predominantly diurnal signal characteristic of the Gulf of Tonkin and the central Vietnamese coast. Mean range at the Tien Sa harbour gauge is about 0.9 metres, climbing past 1.4 metres on the largest spring tides and dropping near 0.4 on neaps. Most days produce one clear high and one clear low rather than the two-and-two semidiurnal pattern that dominates open-ocean coasts; a smaller secondary excursion shows up at certain lunar phases but rarely matters for working-coast planning. The defining seasonal force is the monsoon split. From October through January the north-east monsoon drives swell, rain, and the seasonal flooding events that periodically inundate the Han River delta. From May through August the south-west monsoon brings calm, hot weather and the working surf season at My Khe and Non Nuoc when the offshore wind cleans up the shore-break. The American military rebranded My Khe as China Beach during the war and operated an in-country R-and-R station there from 1965 through 1973; the long sand corridor that Australian and US troops surfed on three-day passes is now the city's main beach corridor, and the modern Vietnamese surf scene built on that history. The Marble Mountains hold a network of Hindu and Buddhist sanctuaries cut into the limestone karst that the Cham civilisation founded a millennium before the war. Coracle fishermen working the inshore grounds, the bridge spans across the Han River for the working downtown, the Hoi An ancient town an hour south where the Thu Bon River meets the sea, and the cable car to the Ba Na Hills inland all read different parts of the working calendar. The Vietnam Hydrographic Department publishes the authoritative tide tables; Open-Meteo Marine drives the gridded predictions on this page.