Chowiet Island, Semidi Island Tide Chart & Fishing Times
Tide times, heights, and solunar bite windows for Chowiet Island, Semidi Island, Alaska — August 2026 & September 2026. Every value is computed from NOAA harmonic constituents, the same offline engine that powers the Ebb app.
NOAA Station
9458519
Type
Harmonic (reference)
Coordinates
56.052, -156.698
Time Zone
Honolulu
Sun, moon & bite windows
Sunday, August 2
Sunday, August 2
Sunrise 4:33 AM · Sunset 8:31 PM · Moon Waning Gibbous (82% lit)
High 2:55a · 8.4 ftLow 9:18a · -0.2 ftHigh 3:45p · 8.4 ftLow 9:42p · 1.6 ft
Major window ★★★
2:30a – 4:30a
Minor window ★★★
9:17a – 10:17a
Major window ★★★
2:39p – 4:39p
Minor window ★★★
8:55p – 9:55p
Best fishing days — August 2026
Top solunar bite days this month
Ranked by solunar quality — days when the major feeding windows stack up with sunrise, sunset, or a strong tide swing.
Saturday, Aug 1 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 1:47a–3:47a, 1:56p–3:56p
Sunday, Aug 2 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 2:30a–4:30a, 2:39p–4:39p
Monday, Aug 3 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 3:13a–5:13a, 3:24p–5:24p
Tuesday, Aug 4 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 3:58a–5:58a, 4:11p–6:11p
Wednesday, Aug 19 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 4:47a–6:47a, 5:05p–7:05p
Thursday, Aug 20 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 5:35a–7:35a, 5:57p–7:57p
Tide table — August 2026
Chowiet Island, Semidi Island tides, August 2026
All high and low tides for Chowiet Island, Semidi Island, in local time (Honolulu). Heights are feet above Mean Lower Low Water (MLLW).
| Day | Tides (height above MLLW) | Sunrise / Sunset | |
|---|---|---|---|
| 1 | Sat | H 2:15a 8.8 ftL 8:50a -0.7 ftH 3:16p 8.2 ftL 9:02p 2.0 ft | 4:31a / 8:33p |
| 2 | Sun | H 2:55a 8.4 ftL 9:18a -0.2 ftH 3:45p 8.4 ftL 9:42p 1.6 ft | 4:33a / 8:31p |
| 3 | Mon | H 3:41a 7.8 ftL 9:46a 0.6 ftH 4:14p 8.7 ftL 10:29p 1.2 ft | 4:34a / 8:29p |
| 4 | Tue | H 4:30a 7.1 ftL 10:16a 1.4 ftH 4:48p 8.8 ftL 11:22p 1.0 ft | 4:36a / 8:27p |
| 5 | Wed | H 5:30a 6.3 ftL 10:50a 2.3 ftH 5:30p 8.8 ft | 4:38a / 8:25p |
| 6 | Thu | L 12:28a 0.8 ftH 6:46a 5.7 ftL 11:32a 3.1 ftH 6:22p 8.8 ft | 4:40a / 8:23p |
| 7 | Fri | L 1:46a 0.5 ftH 8:15a 5.4 ftL 12:37p 3.9 ftH 7:27p 8.9 ft | 4:42a / 8:21p |
| 8 | Sat | L 3:06a -0.1 ftH 9:49a 5.6 ftL 2:12p 4.3 ftH 8:41p 9.0 ft | 4:44a / 8:18p |
| 9 | Sun | L 4:18a -0.7 ftH 11:04a 6.2 ftL 3:46p 4.1 ftH 9:55p 9.3 ft | 4:46a / 8:16p |
| 10 | Mon | L 5:18a -1.3 ftH 11:56a 6.9 ftL 5p 3.6 ftH 11:01p 9.8 ft | 4:48a / 8:14p |
| 11 | Tue | L 6:08a -1.8 ftH 12:38p 7.6 ftL 5:59p 2.8 ftH 11:58p 10.1 ft | 4:50a / 8:12p |
| 12 | Wed | L 6:53a -1.9 ftH 1:17p 8.2 ftL 6:52p 2.0 ft | 4:52a / 8:09p |
| 13 | Thu | H 12:50a 10.1 ftL 7:34a -1.8 ftH 1:53p 8.7 ftL 7:40p 1.4 ft | 4:54a / 8:07p |
| 14 | Fri | H 1:39a 9.9 ftL 8:12a -1.3 ftH 2:28p 9.0 ftL 8:27p 0.9 ft | 4:56a / 8:05p |
| 15 | Sat | H 2:25a 9.4 ftL 8:48a -0.6 ftH 3:02p 9.2 ftL 9:12p 0.6 ft | 4:58a / 8:02p |
| 16 | Sun | H 3:11a 8.7 ftL 9:21a 0.3 ftH 3:36p 9.1 ftL 9:56p 0.6 ft | 5a / 8p |
| 17 | Mon | H 3:58a 7.8 ftL 9:53a 1.3 ftH 4:11p 8.9 ftL 10:41p 0.8 ft | 5:02a / 7:58p |
| 18 | Tue | H 4:47a 6.9 ftL 10:23a 2.2 ftH 4:46p 8.6 ftL 11:31p 1.1 ft | 5:04a / 7:55p |
| 19 | Wed | H 5:43a 6.0 ftL 10:53a 3.1 ftH 5:26p 8.1 ft | 5:06a / 7:53p |
| 20 | Thu | L 12:33a 1.4 ftH 6:52a 5.4 ftL 11:27a 3.9 ftH 6:15p 7.7 ft | 5:08a / 7:50p |
| 21 | Fri | L 1:50a 1.6 ftH 8:21a 5.1 ftL 12:26p 4.5 ftH 7:18p 7.4 ft | 5:10a / 7:48p |
| 22 | Sat | L 3:12a 1.4 ftH 10:15a 5.3 ftL 2:20p 4.8 ftH 8:31p 7.4 ft | 5:12a / 7:45p |
| 23 | Sun | L 4:19a 1.0 ftH 11:19a 5.8 ftL 3:52p 4.6 ftH 9:40p 7.7 ft | 5:14a / 7:43p |
| 24 | Mon | L 5:08a 0.5 ftH 11:49a 6.3 ftL 4:52p 4.1 ftH 10:38p 8.1 ft | 5:15a / 7:40p |
| 25 | Tue | L 5:46a 0.1 ftH 12:16p 6.9 ftL 5:37p 3.5 ftH 11:26p 8.5 ft | 5:17a / 7:38p |
| 26 | Wed | L 6:19a -0.3 ftH 12:41p 7.4 ftL 6:15p 2.8 ft | 5:19a / 7:35p |
| 27 | Thu | H 12:08a 8.9 ftL 6:49a -0.4 ftH 1:08p 8.0 ftL 6:51p 2.1 ft | 5:21a / 7:33p |
| 28 | Fri | H 12:47a 9.1 ftL 7:18a -0.4 ftH 1:34p 8.5 ftL 7:26p 1.5 ft | 5:23a / 7:30p |
| 29 | Sat | H 1:26a 9.1 ftL 7:46a -0.2 ftH 2:01p 8.9 ftL 8:02p 0.9 ft | 5:25a / 7:28p |
| 30 | Sun | H 2:05a 8.9 ftL 8:15a 0.2 ftH 2:28p 9.2 ftL 8:40p 0.4 ft | 5:27a / 7:25p |
| 31 | Mon | H 2:47a 8.5 ftL 8:44a 0.8 ftH 2:57p 9.4 ftL 9:20p 0.0 ft | 5:29a / 7:22p |
Last QuarterAug 5
New MoonAug 12
First QuarterAug 19
Full MoonAug 27
Tide table — September 2026
Chowiet Island, Semidi Island tides, September 2026
| Day | Tides (height above MLLW) | Sunrise / Sunset | |
|---|---|---|---|
| 1 | Tue | H 3:31a 8.0 ftL 9:13a 1.5 ftH 3:29p 9.4 ftL 10:04p -0.1 ft | 5:31a / 7:20p |
| 2 | Wed | H 4:21a 7.2 ftL 9:44a 2.3 ftH 4:05p 9.3 ftL 10:56p 0.0 ft | 5:33a / 7:17p |
| 3 | Thu | H 5:21a 6.4 ftL 10:19a 3.1 ftH 4:50p 9.1 ft | 5:35a / 7:15p |
| 4 | Fri | L 12:02a 0.3 ftH 6:39a 5.8 ftL 11:03a 3.9 ftH 5:49p 8.7 ft | 5:37a / 7:12p |
| 5 | Sat | L 1:26a 0.4 ftH 8:13a 5.6 ftL 12:26p 4.5 ftH 7:09p 8.5 ft | 5:39a / 7:09p |
| 6 | Sun | L 2:54a 0.3 ftH 9:46a 6.0 ftL 2:30p 4.6 ftH 8:37p 8.5 ft | 5:41a / 7:07p |
| 7 | Mon | L 4:07a -0.2 ftH 10:50a 6.7 ftL 4:02p 3.9 ftH 9:56p 8.8 ft | 5:43a / 7:04p |
| 8 | Tue | L 5:04a -0.5 ftH 11:34a 7.5 ftL 5:07p 2.9 ftH 11:02p 9.2 ft | 5:45a / 7:02p |
| 9 | Wed | L 5:50a -0.7 ftH 12:10p 8.2 ftL 5:58p 1.8 ftH 11:56p 9.5 ft | 5:47a / 6:59p |
| 10 | Thu | L 6:30a -0.7 ftH 12:43p 8.9 ftL 6:43p 0.9 ft | 5:49a / 6:56p |
| 11 | Fri | H 12:44a 9.6 ftL 7:06a -0.4 ftH 1:16p 9.4 ftL 7:25p 0.2 ft | 5:51a / 6:54p |
| 12 | Sat | H 1:29a 9.4 ftL 7:40a 0.1 ftH 1:47p 9.6 ftL 8:05p -0.2 ft | 5:53a / 6:51p |
| 13 | Sun | H 2:12a 9.0 ftL 8:13a 0.8 ftH 2:18p 9.7 ftL 8:44p -0.3 ft | 5:55a / 6:48p |
| 14 | Mon | H 2:53a 8.4 ftL 8:43a 1.5 ftH 2:49p 9.5 ftL 9:21p -0.2 ft | 5:57a / 6:46p |
| 15 | Tue | H 3:35a 7.8 ftL 9:12a 2.3 ftH 3:19p 9.1 ftL 10p 0.2 ft | 5:59a / 6:43p |
| 16 | Wed | H 4:19a 7.0 ftL 9:40a 3.0 ftH 3:51p 8.6 ftL 10:43p 0.7 ft | 6a / 6:40p |
| 17 | Thu | H 5:10a 6.3 ftL 10:06a 3.7 ftH 4:27p 8.1 ftL 11:36p 1.3 ft | 6:02a / 6:38p |
| 18 | Fri | H 6:16a 5.7 ftL 10:34a 4.3 ftH 5:14p 7.6 ft | 6:04a / 6:35p |
| 19 | Sat | L 12:50a 1.8 ftH 7:43a 5.4 ftL 11:27a 4.9 ftH 6:25p 7.1 ft | 6:06a / 6:32p |
| 20 | Sun | L 2:20a 1.8 ftH 9:26a 5.6 ftL 2:01p 5.1 ftH 7:54p 7.0 ft | 6:08a / 6:30p |
| 21 | Mon | L 3:35a 1.6 ftH 10:29a 6.1 ftL 3:39p 4.6 ftH 9:13p 7.2 ft | 6:10a / 6:27p |
| 22 | Tue | L 4:26a 1.2 ftH 11:01a 6.7 ftL 4:35p 3.8 ftH 10:16p 7.7 ft | 6:12a / 6:24p |
| 23 | Wed | L 5:05a 0.8 ftH 11:28a 7.4 ftL 5:16p 2.9 ftH 11:07p 8.2 ft | 6:14a / 6:22p |
| 24 | Thu | L 5:38a 0.6 ftH 11:54a 8.1 ftL 5:52p 1.9 ftH 11:51p 8.6 ft | 6:16a / 6:19p |
| 25 | Fri | L 6:09a 0.6 ftH 12:20p 8.7 ftL 6:27p 0.9 ft | 6:18a / 6:16p |
| 26 | Sat | H 12:32a 8.9 ftL 6:39a 0.7 ftH 12:47p 9.3 ftL 7:02p 0.1 ft | 6:20a / 6:14p |
| 27 | Sun | H 1:12a 9.0 ftL 7:10a 1.0 ftH 1:16p 9.8 ftL 7:39p -0.6 ft | 6:22a / 6:11p |
| 28 | Mon | H 1:54a 8.9 ftL 7:40a 1.4 ftH 1:45p 10.1 ftL 8:17p -1.1 ft | 6:24a / 6:08p |
| 29 | Tue | H 2:37a 8.6 ftL 8:12a 1.9 ftH 2:18p 10.2 ftL 8:59p -1.2 ft | 6:26a / 6:06p |
| 30 | Wed | H 3:24a 8.0 ftL 8:46a 2.6 ftH 2:53p 10.1 ftL 9:46p -1.0 ft | 6:28a / 6:03p |
Last QuarterSep 3
New MoonSep 10
First QuarterSep 17
Full MoonSep 25
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Nearby stations
Tide charts near Chowiet Island, Semidi Island
About this data
Predictions for Chowiet Island, Semidi Island are computed from NOAA CO-OPS harmonic constituents using Ebb's on-device engine (a Schureman/pytides harmonic model). They are astronomical tide predictions and do not account for weather, wind, or barometric pressure, which can shift real water levels. Solunar bite windows are a fishing-planning heuristic, not a guarantee. Ebb is a fishing- and trip-planning tool, not a navigation product — always consult NOAA Tides & Currents and official sources for navigation-critical decisions.