Alaska
Zachary Bay
Unga Island · Alaska · NOAA station 9459465 · Tide predictions
55.3350, -160.6170
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
Shumagin Islands buoy · 97 mi S · Station 46075
Wind & wave reports →
Last light, longer plans
Daylight calendar for Unalaska / Dutch Harbor → Alaska Daylight · Northern lights forecast for Unalaska / Dutch Harbor → Alaska Aurora Forecast
Nearby tide stations
- SAND POINT, POPOF ISLAND · 4.4 mi E
- Pirate Cove, Popof Island · 10.3 mi E
- Beaver Bay · 13.0 mi NW
- Albatross Anchorage, Balboa Bay · 17.6 mi N
- Sanborn Harbor, Nagai Island · 27.5 mi SE
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 9.4 ft — Fri Jan 22 · 1:45 PM
Lowest predicted low tide: -2.7 ft — Sun Jul 4 · 9:40 AM
Biggest single-day swing: 11.3 ft on Sun Jul 4
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Sun Jul 4 | 9:40 AM | -2.7 ft |
| Mon Jul 5 | 10:24 AM | -2.7 ft |
| Sun Jun 6 | 10:37 AM | -2.7 ft |
| Sat Jun 5 | 9:51 AM | -2.6 ft |
| Sat Jul 3 | 8:54 AM | -2.5 ft |
| Mon Jun 7 | 11:24 AM | -2.4 ft |
| Fri Jun 4 | 9:06 AM | -2.3 ft |
| Tue Jul 6 | 11:08 AM | -2.3 ft |
| Mon Aug 2 | 9:22 AM | -2.3 ft |
| Sun Aug 1 | 8:39 AM | -2.1 ft |
175 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.
About this station
Zachary Bay, Unga 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.
Alaska holds the country's most extreme tides: Inside Passage channels, Cook Inlet swings past 30 ft, and Arctic stations where the tide is measured in inches and wind setup runs the show.