Sumner Island tide predictions
56.4100, -133.7930 · NOAA station 9451163
Full daylight calendar for the Petersburg area → Alaska Daylight · Northern lights forecast for Petersburg → Alaska Aurora Forecast
Nearest buoy: Cape Edgecumbe · 87 mi W — live wind & wave reports
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.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
7-day tides
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H = high tide · L = low tide
About this station
NOAA builds the predictions for Sumner Island from the Sitka station: high tides adjusted +2.6 ft, 19 min earlier; low tides adjusted +0.0 ft, 12 min earlier.
Inside Passage waters are sheltered, but the ranges are real: 15 to 20 ft swings are routine, and narrow channels run strong tidal currents on the change. Out here, rain and channel weather matter more than ice.
2027 tide extremes
Highest predicted high tide: 14.9 ft — Fri Jan 22 · 11:49 AM
Lowest predicted low tide: -3.2 ft — Mon Jul 5 · 8:25 AM
Biggest single-day swing: 17.4 ft on Fri Jan 22
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Mon Jul 5 | 8:25 AM | -3.2 ft |
| Sun Jul 4 | 7:39 AM | -3.0 ft |
| Sun Jun 6 | 8:38 AM | -3.0 ft |
| Tue Jul 6 | 9:09 AM | -2.9 ft |
| Sat Jun 5 | 7:52 AM | -2.8 ft |
| Mon Jun 7 | 9:26 AM | -2.8 ft |
| Tue Aug 3 | 8:04 AM | -2.7 ft |
| Mon Aug 2 | 7:21 AM | -2.7 ft |
| Fri Jan 22 | 6:45 PM | -2.5 ft |
| Fri Jun 4 | 7:06 AM | -2.4 ft |
180 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.
Nearest tide stations
- Reid Bay · 3.8 mi SW
- Monte Carlo Island · 8.7 mi N
- Port Protection, Prince of Wales Island. · 10.2 mi SE
- Port Beauclerc, Kuiu Island · 10.6 mi SW
- Port Malmesbury, Kuiu Island · 18.5 mi SW