Tamsui 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.

Next spring tide on Mon 18 May (range 3.4m). Last neap on Sat 16 May. Next neap on Fri 22 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.

Tamsui sits at the mouth of the Tamsui River on the northwestern edge of the Taipei basin, where the river empties into the Taiwan Strait. The tidal regime here is mixed semidiurnal — two highs and two lows per day of unequal size — but the range is reduced compared to the open-coast Keelung harbour: mean range approximately 1.0 m, the result of the river's tidal prism diluting the strait tidal signal and river discharge partially offsetting the flood. On spring tides the range nudges toward 1.3 m; neap tides can compress the net water level change to under 0.6 m. Tamsui has the weight of history along Taiwan's coast. The old Hobe Fort (Fort San Domingo) — originally built by the Spanish in 1628, rebuilt by the Dutch in 1644, occupied successively by the Qing dynasty and then leased to the British as a consulate from 1868 to 1972 — stands on the hill above the waterfront, its red-brick walls overlooking the river mouth and the strait beyond. The adjacent British Consular Residence is preserved and open; the red-brick buildings against the green hillside with the strait in the background define the Tamsui skyline on the north side. The Tamsui Old Street along the riverside runs from the ferry pier south past the fish market and traditional snack vendors to the fort hillside path. The strait sunsets from Fisherman's Wharf (Bali side or Tamsui pier) are among the most celebrated in northern Taiwan — the sun drops behind Guanyinshan mountain across the water in New Taipei, producing a silhouette effect on calm evenings. The Tamsui River is tidal for roughly 15 km upstream from the mouth; small craft and traditional dragon boats use the lower river, and the tidal current reversal is noticeable from the waterfront at mid-tide. The New Taipei MRT Red Line terminates at Tamsui station, making the town a 40-minute train ride from central Taipei. The Central Weather Administration (CWA) is the authoritative source for tidal predictions; Open-Meteo Marine supplements with gridded model data.