Donggang 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 12:00 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/Taipei local. Folk tradition, not a scientific forecast.

Donggang is a traditional fishing town on Taiwan's southwest coast, 25 km southwest of Kaohsiung at the mouth of the Donggang River. The fishing harbour is among the most active in Taiwan, with a deep-sea fleet targeting Pacific bluefin tuna (Thunnus orientalis, known as Hon-maguro in the Japanese fish trade) as the primary high-value species. Mean tidal range at Donggang is approximately 1.1 m — mixed semidiurnal, two highs and two lows per day of unequal height, typical of this part of the South China Sea coast. Spring tides push toward 1.4 m; neap tides ease toward 0.6 m. The tidal current in the Donggang River mouth affects harbour entry timing for the deep-sea vessels returning from weeks at sea: ebb currents and shallow bar conditions at low water are the practical constraint, and trawler captains cross the bar on the flood. The bluefin tuna auction season runs from April through June, when the offshore fleet returns to Donggang with Pacific bluefin from southern Pacific grounds. The pre-dawn auction on the Donggang wharf is one of the most serious fish auctions in Asia — buyers from Japan, Hong Kong, and mainland China bid on the fish alongside local Taiwanese buyers. The fish are graded, iced, and shipped within hours of landing. Xiaoluqiu (Little Liuqiu Island), Taiwan's only coral island, sits offshore from Donggang and is reachable by ferry in approximately 30 minutes. The island's fringing reefs and sea turtle population — green turtles are resident year-round in the surrounding waters — make it a popular dive and snorkel destination. The ferry from Donggang harbour runs multiple times daily; tidal state has minimal effect on the crossing given the modest range, though sea state in a southwest swell can affect the Xiaoluqiu harbour entry. The Central Weather Administration (CWA) is the authoritative source for tidal predictions; Open-Meteo Marine supplements with gridded model data accurate to approximately ±45 minutes on timing and ±0.2–0.3 m on height.