tidealmanac
Mon, Sep 21

Tuesday, September 22, 2026

Sumner Island, AK · NOAA 9451163 · MLLW · Local time (America/Sitka)

Wed, Sep 23

This is a subordinate station: NOAA predicts its highs and lows from a nearby reference station and publishes no curve for it. Nothing is interpolated.

Tides

  1. Low4:44 AM1.2 ft0.38 m
  2. High11:17 AM10.4 ft3.17 m
  3. Low4:55 PM3.9 ft1.18 m
  4. High10:36 PM11.2 ft3.41 m

Range 9.9 ft3.03 m · 4 predicted tides · MLLW

Sun

Civil dawn
6:02 AM
Sunrise
6:40 AM
Solar noon
12:48 PM
Sunset
6:56 PM
Civil dusk
7:34 PM
Daylight
12h 17m

Computed from the station's coordinates (NOAA solar algorithm, ±1 min); not NOAA tide data. Sun calendars: sunupsundown.site.

Moon

Waxing gibbous83% illuminated · day 10 of the cycle

Between spring and neap: an average tidal range. Approximate phase, computed here.

This week

Sat, Sep 19L 1:18AM 2.2 ft0.67 mH 8:27AM 9.0 ft2.73 mL 12:47PM 5.6 ft1.69 mH 6:50PM 10.4 ft3.16 mSun, Sep 20L 2:47AM 2.2 ft0.67 mH 9:56AM 9.3 ft2.84 mL 2:50PM 5.4 ft1.66 mH 8:25PM 10.3 ft3.15 mMon, Sep 21L 3:56AM 1.8 ft0.54 mH 10:44AM 9.8 ft3.00 mL 4:06PM 4.8 ft1.45 mH 9:41PM 10.7 ft3.26 mTue, Sep 22L 4:44AM 1.2 ft0.38 mH 11:17AM 10.4 ft3.17 mL 4:55PM 3.9 ft1.18 mH 10:36PM 11.2 ft3.41 mWed, Sep 23L 5:22AM 0.8 ft0.23 mH 11:44AM 11.0 ft3.37 mL 5:34PM 2.9 ft0.88 mH 11:22PM 11.7 ft3.56 mThu, Sep 24L 5:55AM 0.4 ft0.13 mH 12:09PM 11.7 ft3.56 mL 6:09PM 1.9 ft0.57 mFri, Sep 25H 12:03AM 12.1 ft3.69 mL 6:26AM 0.3 ft0.09 mH 12:34PM 12.4 ft3.77 mL 6:45PM 0.9 ft0.27 m