Port William, Shuyak Island Tides Today
Open this station in TidalMapLive water level, free for 7 days
Port William, Shuyak Island runs a mean tidal range of about 11.1 ft. This month the highest water, 17.7 ft, comes on the afternoon of Nov 25, and the lowest, a -3.4 ft minus tide, on the evening of Nov 25.
| Low tide | 3:25 AM | 2.2 ft |
| High tide | 10:10 AM | 12.0 ft |
| Low tide | 4:16 PM | 4.7 ft |
| High tide | 10:12 PM | 11.5 ft |
Today on the water at Port William, Shuyak Island
Today at Port William, Shuyak Island: high tide at 10:10 AM (12.0 ft) and 10:12 PM (11.5 ft), low tide at 3:25 AM (2.2 ft) and 4:16 PM (4.7 ft). The National Weather Service forecast for Tuesday is heavy rain with E winds 10 to 30 mph, 47°F. Wind that strong can hold water in or push it out, so the real tide may run above or below these predictions. In effect now: Gale Warning. Sunrise is at 8:29 AM and sunset at 5:18 PM.
| Period | Forecast | Wind | Temp |
|---|---|---|---|
| Overnight | Light Rain Likely | E 30 to 35 mph | 44°F |
| Tuesday | Heavy Rain | E 10 to 30 mph | 47°F |
Forecast: National Weather Service point forecast for this location.
Where Port William, Shuyak Island is
Port William, Shuyak Island sits at 58.4902° N, 152.5838° W on the Gulf of Alaska, about 29 mi north of Aleneva, AK. The station here is a historical NOAA reference station: a gauge measured the tide at this spot from 1971 until 2024, and NOAA still publishes harmonic predictions from that record. There is no live reading here today. The closest gauge measuring live water level is Kodiak, Womens Bay (NOAA 9457292), 52.5 mi away, and high and low water here run on average about 40 min later than there. The nearest weather station is East Amatuli Island Light, AK, a shore station reporting wind and, at most sites, water temperature, 37.1 mi away.
The tide at Port William, Shuyak Island
Port William, Shuyak Island has a semidiurnal tide: two highs and two lows a day of about the same size, roughly 12 hours 25 minutes apart. This month's predictions average 1.9 high tides a day here. The mean range from lower low to higher high is 13.9 ft, and 11.4 ft between the average high and the average low, a very large tide, among the biggest in the United States. On an average day the higher high tops the lower high by 0.9 ft and the lower low sits 1.6 ft below the other low. For the water around it: Gulf of Alaska tides are mixed semidiurnal, two unequal highs a day with ranges of 8 to 15 ft.
About this station
- High tide reaches Port William, Shuyak Island about 11.2 hours after the moon passes overhead. That lag is local, which is why high water does not line up with the moon.
Datum and source
Heights on this page are feet above mean lower low water (MLLW), the zero NOAA's nautical charts use for soundings. A predicted 0.0 ft low is the average of the lower low each day; a minus tide is water below chart datum, and a 2 ft high means 2 ft more water than the chart shows. NOAA fixes MLLW at Port William, Shuyak Island from the 2012-2016 National Tidal Datum Epoch; mean higher high water is 13.9 ft above it and mean sea level 7.3 ft. The land survey datum NAVD88, the zero on topographic maps and flood maps, is 3.0 ft above MLLW here, so a water level on this page converts to NAVD88 by subtracting that amount. These datums are controlled from NOAA's Seldovia, AK gauge. Source: NOAA CO-OPS station 9457313, established 1971, gauge removed 2024. The tide times and heights are NOAA's official harmonic predictions for this station; TidalMap republishes them daily and does not alter them.
Tide stations near Port William, Shuyak Island
- Seal Bay: 14.9 mi, tides about 7 min earlier
- Dolphin Point, Raspberry Strait: 33.5 mi, tides about 19 min earlier
- Fox Bay, Whale Island: 35.9 mi, tides about 10 min earlier
- West Raspberry Island: 38.1 mi, tides about 6 min earlier
- Ouzinkie, Spruce Island: 39.4 mi, tides about 39 min earlier
TidalMapMonthly tide calendar
🌊 Biggest flood tides at Port William, Shuyak Island this month: Nov 8, Nov 9, Nov 10, Nov 23, Nov 24, Nov 25, Nov 26, Nov 27. These spring highs push water up into the grass and over the oyster rock; prime for poling into flooded marsh for tailing reds.
🔻 Negative (minus) low tides at Port William, Shuyak Island this month: Nov 7, Nov 8, Nov 9, Nov 10, Nov 11, Nov 22, Nov 23, Nov 24, Nov 25, Nov 26, Nov 27, Nov 28. These drain the flats and expose the oyster rock, prime for sight-fishing and clamming.
Best fishing times (solunar)
Major and minor solunar windows for Port William, Shuyak Island, peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).
| Day | Major windows | Minor windows | Score |
|---|---|---|---|
| Today 🌗 | 7:47–9:47 AM 8:12–10:12 PM | 12:15–2:15 AM 2:51–4:51 PM | 50 |
| Wed Nov 4 🌗 | 8:34–10:34 AM 8:59–10:59 PM | 1:51–3:51 AM 2:54–4:54 PM | 63 |
| Thu Nov 5 🌘 | 9:20–11:20 AM 9:45–11:45 PM | 3:22–5:22 AM 2:56–4:56 PM | 75 |
| Fri Nov 6 🌘 | 10:04–12:04 PM 10:29–12:29 AM | 4:52–6:52 AM 2:59–4:59 PM | 85 |
| Sat Nov 7 🌘 | 10:50–12:50 PM 11:15–1:15 AM | 6:22–8:22 AM 3:02–5:02 PM | 93 |
| Sun Nov 8 🌘 | 11:36–1:36 PM 12:01–2:01 AM | 7:52–9:52 AM 3:08–5:08 PM | 97 |
| Mon Nov 9 🌑 | 12:24–2:24 PM 12:49–2:49 AM | 9:22–11:22 AM 3:18–5:18 PM | 99 |
Predictions & observations: NOAA CO-OPS station 9457313. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.
Open this station in TidalMapLive water level, free for 7 days
Set your own flood/low lines, moon & solunar, weather and live tides in the app, start a free TidalMap trial.