Rootok Island tide predictions

54.0522, -165.5142 · NOAA station 9462723

Full daylight calendar for the Unalaska / Dutch Harbor area → Alaska Daylight · Northern lights forecast for Unalaska / Dutch Harbor → Alaska Aurora Forecast

Tide now

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48-hour outlook

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

7-day tides

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H = high tide · L = low tide

About this station

Rootok 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.

Ranges shrink as you head down the chain, but the passes between islands rip hard on the change, and weather calls the shots year-round. Wind can hold water in or blow it out far beyond what the table says.

Diurnal range5.1 ft

Mean range3.3 ft

RegionAleutian Islands & Alaska Peninsula

NOAA chart16531

Station since2012

2027 tide extremes

Highest predicted high tide: 6.8 ft — Thu Jan 21 · 11:59 AM

Lowest predicted low tide: -2.0 ft — Sun Jul 4 · 9:09 AM

Biggest single-day swing: 8.2 ft on Sun Jul 4

Best daytime minus tides of 2027

Date	Low tide	Height
Sun Jul 4	9:09 AM	-2.0 ft
Sat Jun 5	9:20 AM	-1.9 ft
Sun Jun 6	10:09 AM	-1.9 ft
Sat Jul 3	8:21 AM	-1.8 ft
Mon Jul 5	9:55 AM	-1.8 ft
Fri Jun 4	8:32 AM	-1.7 ft
Sun Aug 1	8:05 AM	-1.7 ft
Mon Jun 7	10:57 AM	-1.7 ft
Mon Aug 2	8:50 AM	-1.6 ft
Fri Jul 2	7:33 AM	-1.5 ft

172 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.