Port McArthur — AK, United States

Tide times & tide chart

2.1 ft1:45am7.7 ft8:58am5.3 ft2:18pm8.1 ft7:43pmNow
Tide predictions for Port McArthur, NOAA reference highs and lows, adjusted by published offsets. High 8.1 feet on Mon 19 Oct 2026 at 19:40, low 2.1 feet on Mon 19 Oct 2026 at 01:50, above MLLW, the chart datum.
↑7:36am↓5:44pm

Predictions are not observations — conditions vary with weather and river flow. Not for navigation.

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Tide times for the next 7 days

Mon 19 Oct 2026 through Sun 25 Oct 2026. All times are local to Port McArthur (America/Sitka). Heights are in feet above MLLW.
DayTideTimeHeight
Mon 19 Oct 2026Low2.1 ft
Mon 19 Oct 2026High7.7 ft
Mon 19 Oct 2026Low5.3 ft
Mon 19 Oct 2026High8.1 ft
Tue 20 Oct 2026Low2.0 ft
Tue 20 Oct 2026High8.2 ft
Tue 20 Oct 2026Low4.4 ft
Tue 20 Oct 2026High8.3 ft
Wed 21 Oct 2026Low1.8 ft
Wed 21 Oct 2026High8.8 ft
Wed 21 Oct 2026Low3.3 ft
Wed 21 Oct 2026High8.7 ft
Thu 22 Oct 2026Low1.6 ft
Thu 22 Oct 2026High9.6 ft
Thu 22 Oct 2026Low2.1 ft
Thu 22 Oct 2026High9.2 ft
Fri 23 Oct 2026Low1.5 ft
Fri 23 Oct 2026High10.3 ft
Fri 23 Oct 2026Low0.9 ft
Fri 23 Oct 2026High9.7 ft
Sat 24 Oct 2026Low1.6 ft
Sat 24 Oct 2026High11.1 ft
Sat 24 Oct 2026Low-0.2 ft
Sun 25 Oct 2026High10.1 ft
Sun 25 Oct 2026Low1.8 ft
Sun 25 Oct 2026High11.8 ft
Sun 25 Oct 2026Low-1.1 ft

Station facts

Position
56.0667° N, 134.1167° W
Time zone
America/Sitka
Datum
MLLW datum · NOAA reference highs and lows, adjusted by published offsets
Source
NOAA tide offsets from 9451600
Region
AK, United States

Heights are measured above chart datum. A negative height means there is that much less water than the charted depth shows.

Slackwater database (https://github.com/openwatersio/slackwater-database)

How we check predictions — dated samples and their limits.

Nearby

All tide stations