Know the Tide

Know the tide.

Hawaii & the Territories

APIA (Observatory)

Upolu Island · American Samoa · NOAA station 1778000 · Tide predictions

· Samoa Time · Feet / MLLW (mean lower low water)

-13.8083, -171.7670

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48-hour outlook

Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.

The next seven days

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H = high tide · L = low tide · highs & lows in local time

On the water nearby

Nearby tide stations

Plan ahead

2027 tide extremes for this station

Highest predicted high tide: 7.5 ft — Thu Jan 21 · 6:16 PM

Lowest predicted low tide: 3.1 ft — Mon Aug 2 · 1:11 PM

Biggest single-day swing: 4.2 ft on Fri Jan 22

About this station

APIA (Observatory), Upolu Island is one of NOAA's reference tide stations — its predictions are computed directly from harmonic analysis of water levels observed here, and other nearby stations are calculated from it.

Trade-wind shores with small mixed tides — a foot or two in Hawaii, a few feet in the Caribbean — where swell and season matter more than range.

RegionHawaii & the Territories
Station since1925