- Low 4:50 AM 1.7 ft
- High 11:02 AM 8.7 ft
- Low 5:25 PM 1.0 ft
- High 11:31 PM 8.2 ft
First light 7:36 AMSunrise 8:15 AMSunset 6:05 PMLast light 6:44 PM
Chowiet Island, Semidi Island, AK Tide Chart & Tide Times
NOAA tide station 9458519 · Alaska · updated Oct 23, 2026
Fri, Oct 23: High tide 11:02 AM (8.7 ft) and 11:31 PM (8.2 ft); low tide 4:50 AM (1.7 ft) and 5:25 PM (1.0 ft).
Tide todayHigh 11:02 AM · High 11:31 PMLow 4:50 AM · Low 5:25 PM
Today's range7.7 ft1.0 → 8.7 ft (MLLW)
Wind (forecast)Loading…
Sun8:15 AM – 6:05 PMFirst light 7:36 AM · Last light 6:44 PM
Wind: NOAA National Weather Service hourly forecast (api.weather.gov); no observing station within 25 mi.
Chowiet Island, Semidi Island tides — next 3 days
Shaded = night · heights in feet above MLLW · local time
- Low 5:25 AM 1.7 ft
- High 11:32 AM 9.4 ft
- Low 6:01 PM -0.2 ft
First light 7:38 AMSunrise 8:18 AMSunset 6:02 PMLast light 6:42 PM
- High 12:16 AM 8.5 ft
- Low 6:00 AM 1.9 ft
- High 12:04 PM 10.0 ft
- Low 6:39 PM -1.1 ft
First light 7:40 AMSunrise 8:20 AMSunset 6:00 PMLast light 6:39 PM
- High 1:00 AM 8.7 ft
- Low 6:35 AM 2.1 ft
- High 12:36 PM 10.5 ft
- Low 7:19 PM -1.8 ft
First light 7:42 AMSunrise 8:22 AMSunset 5:58 PMLast light 6:37 PM
Chowiet Island, Semidi Island tide table — next 9 days
| Fri, Oct 23 | Low 4:50 AM 1.68 ft | High 11:02 AM 8.68 ft | Low 5:25 PM 0.97 ft | High 11:31 PM 8.15 ft |
|---|---|---|---|---|
| Sat, Oct 24 | Low 5:25 AM 1.73 ft | High 11:32 AM 9.39 ft | Low 6:01 PM -0.17 ft | |
| Sun, Oct 25 | High 12:16 AM 8.54 ft | Low 6:00 AM 1.89 ft | High 12:04 PM 10.01 ft | Low 6:39 PM -1.13 ft |
| Mon, Oct 26 | High 1:00 AM 8.75 ft | Low 6:35 AM 2.14 ft | High 12:36 PM 10.49 ft | Low 7:19 PM -1.82 ft |
| Tue, Oct 27 | High 1:45 AM 8.72 ft | Low 7:10 AM 2.48 ft | High 1:12 PM 10.77 ft | Low 8:01 PM -2.14 ft |
| Wed, Oct 28 | High 2:31 AM 8.47 ft | Low 7:48 AM 2.87 ft | High 1:49 PM 10.77 ft | Low 8:46 PM -2.08 ft |
| Thu, Oct 29 | High 3:20 AM 8.04 ft | Low 8:28 AM 3.31 ft | High 2:31 PM 10.48 ft | Low 9:35 PM -1.66 ft |
| Fri, Oct 30 | High 4:14 AM 7.53 ft | Low 9:14 AM 3.78 ft | High 3:19 PM 9.89 ft | Low 10:29 PM -0.97 ft |
| Sat, Oct 31 | High 5:16 AM 7.10 ft | Low 10:11 AM 4.22 ft | High 4:16 PM 9.06 ft | Low 11:32 PM -0.16 ft |
Times are local (standard/daylight). Heights in feet above MLLW.
Nearby tide stations
- Chirikof Island, AK 40.7 mi
- Nakchamik Island, AK 47.6 mi
- Unavikshak Island, AK 50.2 mi
- Chankliut Island, AK 54.7 mi
- Aniakchak Bay, AK 57.4 mi
- Kujulik Bay (North Shore), AK 62.7 mi
- Castle Bay, Northwest Arm, AK 64.7 mi
- Chignik, Anchorage Bay, AK 67.6 mi
About this station
- NOAA station ID
- 9458519
- Type
- Reference (harmonic) station
- Coordinates
- 56.0517, -156.6980
- Datum
- MLLW (feet)
- Time zone
- America/Adak
FAQ
When is high tide today at Chowiet Island, Semidi Island, AK?
On Fri, Oct 23, predicted high tide at Chowiet Island, Semidi Island, AK is at 11:02 AM, 11:31 PM local time.
When is low tide today at Chowiet Island, Semidi Island, AK?
On Fri, Oct 23, predicted low tide at Chowiet Island, Semidi Island, AK is at 4:50 AM, 5:25 PM local time.
Where does this tide data come from?
Predictions come from NOAA's Center for Operational Oceanographic Products and Services (CO-OPS), station 9458519. Heights are in feet relative to Mean Lower Low Water (MLLW).