Heights in feet above Mean Lower Low Water (MLLW). Dots are NOAA's predicted highs and lows; the line between them is our interpolation. Shaded: night.
| Tide | Time | Height |
|---|---|---|
| Low tide | 12:39 AM | -0.47 ft |
| High tide | 3:30 PM | 4.27 ft |
| Day | High tides | Low tides |
|---|---|---|
| Today Tue, Oct 27 | 3:30 PM 4.3 ft | 12:39 AM -0.5 ft |
| Tomorrow Wed, Oct 28 | 4:10 PM 4.5 ft | 1:30 AM -0.9 ft |
| Thu, Oct 29 | 5:09 PM 4.5 ft | 2:23 AM -1.2 ft |
| Fri, Oct 30 | 6:25 PM 4.4 ft | 3:16 AM -1.3 ft |
| Sat, Oct 31 | 1:49 PM 4.1 ft7:49 PM 4.1 ft | 4:08 AM -1.3 ft4:29 PM 4.0 ft |
| Sun, Nov 1 | 12:57 PM 3.9 ft8:14 PM 3.8 ft | 3:59 AM -1.0 ft4:45 PM 3.5 ft |
| Mon, Nov 2 | 1:08 PM 3.6 ft9:42 PM 3.3 ft | 4:48 AM -0.6 ft5:56 PM 2.9 ft |
Orange: measured by NOAA's sensor, last 24 hours (6-minute data, preliminary). Dashed: predicted tide, through the next 24 hours. The prediction contains only the astronomical tide; wind, air pressure and river flow move the real water level away from it.
On Tuesday, October 27, high tide at Sweeper Cove, Kuluk Bay, Adak Island is at 3:30 PM (4.3 ft); low tide is at 12:39 AM (-0.5 ft) (HDT, heights above MLLW). The table above lists the next 7 days.
The highest predicted tide in the next 12 months is 5.6 ft on December 23, 2026 at 1:00 PM. The largest tides fall a day or two after a full or new moon, especially when the Moon is closest to Earth.
Yes — on 221 days in the next 12 months the low tide drops below 0 ft (MLLW). The lowest is -1.8 ft on June 6, 2027 at 1:35 PM. Minus tides expose the most shoreline, which is why tide-poolers look for them.
Station local time (HDT at the time this page was built), with daylight saving time applied where the area observes it — the same convention as NOAA's own tide tables.
From NOAA CO-OPS, the U.S. government tide station network (tidesandcurrents.noaa.gov); the predictions are public domain. The curve between highs and lows is our interpolation. This page is not for navigation.