Castle Islands, Duncan Canal Tide Chart & Fishing Times
Tide times, heights, and solunar bite windows for Castle Islands, Duncan Canal, Alaska — August 2026 & September 2026. Every value is computed from NOAA harmonic constituents, the same offline engine that powers the Ebb app.
NOAA Station
9451321
Type
Harmonic (reference)
Coordinates
56.643, -133.152
Time Zone
Anchorage
Sun, moon & bite windows
Sunday, August 2
Sunday, August 2
Sunrise 4:55 AM · Sunset 9:00 PM · Moon Waning Gibbous (83% lit)
High 3:52a · 15.2 ftLow 9:52a · -1.1 ftHigh 4:29p · 15.2 ftLow 10:14p · 1.2 ft
Major window ★★★
2:53a – 4:53a
Minor window ★★★
9:38a – 10:38a
Major window ★★★
3:02p – 5:02p
Minor window ★★★
9:20p – 10:20p
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: 2:10a–4:10a, 2:19p–4:19p
Sunday, Aug 2 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 2:53a–4:53a, 3:02p–5:02p
Monday, Aug 3 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 3:36a–5:36a, 3:46p–5:46p
Thursday, Aug 6 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 6:03a–8:03a, 6:24p–8:24p
Wednesday, Aug 19 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 5:10a–7:10a, 5:28p–7:28p
Thursday, Aug 20 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 5:58a–7:58a, 6:19p–8:19p
Tide table — August 2026
Castle Islands, Duncan Canal tides, August 2026
All high and low tides for Castle Islands, Duncan Canal, in local time (Anchorage). Heights are feet above Mean Lower Low Water (MLLW).
| Day | Tides (height above MLLW) | Sunrise / Sunset | |
|---|---|---|---|
| 1 | Sat | H 3:15a 15.8 ftL 9:20a -1.7 ftH 3:57p 15.2 ftL 9:34p 1.5 ft | 4:53a / 9:02p |
| 2 | Sun | H 3:52a 15.2 ftL 9:52a -1.1 ftH 4:29p 15.2 ftL 10:14p 1.2 ft | 4:55a / 9p |
| 3 | Mon | H 4:33a 14.2 ftL 10:26a -0.1 ftH 5:02p 15.2 ftL 10:59p 1.0 ft | 4:57a / 8:58p |
| 4 | Tue | H 5:18a 13.2 ftL 11:03a 1.1 ftH 5:40p 15.0 ftL 11:48p 1.1 ft | 4:59a / 8:56p |
| 5 | Wed | H 6:14a 12.0 ftL 11:45a 2.4 ftH 6:27p 14.7 ft | 5:01a / 8:54p |
| 6 | Thu | L 12:46a 1.3 ftH 7:26a 11.0 ftL 12:35p 3.8 ftH 7:29p 14.5 ft | 5:03a / 8:51p |
| 7 | Fri | L 1:57a 1.5 ftH 8:51a 10.7 ftL 1:40p 5.0 ftH 8:44p 14.5 ft | 5:05a / 8:49p |
| 8 | Sat | L 3:24a 1.2 ftH 10:11a 11.2 ftL 3:07p 5.5 ftH 9:57p 15.1 ft | 5:07a / 8:47p |
| 9 | Sun | L 4:47a 0.1 ftH 11:19a 12.2 ftL 4:38p 5.1 ftH 11:03p 16.0 ft | 5:09a / 8:45p |
| 10 | Mon | L 5:51a -1.2 ftH 12:17p 13.5 ftL 5:49p 3.9 ft | 5:11a / 8:42p |
| 11 | Tue | H 12:03a 17.0 ftL 6:42a -2.3 ftH 1:06p 14.8 ftL 6:45p 2.4 ft | 5:13a / 8:40p |
| 12 | Wed | H 12:57a 17.8 ftL 7:26a -3.0 ftH 1:50p 15.9 ftL 7:33p 1.1 ft | 5:15a / 8:38p |
| 13 | Thu | H 1:47a 18.2 ftL 8:06a -3.2 ftH 2:30p 16.7 ftL 8:17p 0.2 ft | 5:17a / 8:35p |
| 14 | Fri | H 2:32a 18.0 ftL 8:44a -2.9 ftH 3:08p 17.1 ftL 9p -0.3 ft | 5:19a / 8:33p |
| 15 | Sat | H 3:16a 17.3 ftL 9:20a -2.0 ftH 3:46p 17.0 ftL 9:42p -0.3 ft | 5:21a / 8:30p |
| 16 | Sun | H 3:59a 16.1 ftL 9:54a -0.8 ftH 4:23p 16.6 ftL 10:23p 0.1 ft | 5:23a / 8:28p |
| 17 | Mon | H 4:42a 14.6 ftL 10:29a 0.7 ftH 5:01p 15.8 ftL 11:06p 0.8 ft | 5:25a / 8:26p |
| 18 | Tue | H 5:28a 13.1 ftL 11:03a 2.3 ftH 5:41p 14.8 ftL 11:51p 1.7 ft | 5:27a / 8:23p |
| 19 | Wed | H 6:21a 11.6 ftL 11:40a 3.9 ftH 6:28p 13.7 ft | 5:29a / 8:21p |
| 20 | Thu | L 12:43a 2.7 ftH 7:28a 10.4 ftL 12:23p 5.3 ftH 7:27p 12.9 ft | 5:31a / 8:18p |
| 21 | Fri | L 1:52a 3.5 ftH 8:49a 9.9 ftL 1:21p 6.5 ftH 8:39p 12.5 ft | 5:33a / 8:16p |
| 22 | Sat | L 3:34a 3.6 ftH 10:08a 10.2 ftL 3p 7.0 ftH 9:49p 12.7 ft | 5:35a / 8:13p |
| 23 | Sun | L 4:58a 2.8 ftH 11:11a 11.0 ftL 4:45p 6.5 ftH 10:50p 13.4 ft | 5:37a / 8:10p |
| 24 | Mon | L 5:48a 1.7 ftH 12p 12.1 ftL 5:42p 5.4 ftH 11:41p 14.3 ft | 5:39a / 8:08p |
| 25 | Tue | L 6:23a 0.6 ftH 12:40p 13.2 ftL 6:22p 4.1 ft | 5:42a / 8:05p |
| 26 | Wed | H 12:26a 15.2 ftL 6:54a -0.3 ftH 1:14p 14.2 ftL 6:56p 2.9 ft | 5:44a / 8:03p |
| 27 | Thu | H 1:06a 15.9 ftL 7:22a -1.0 ftH 1:46p 15.2 ftL 7:28p 1.6 ft | 5:46a / 8p |
| 28 | Fri | H 1:44a 16.4 ftL 7:50a -1.4 ftH 2:17p 15.9 ftL 8:01p 0.6 ft | 5:48a / 7:58p |
| 29 | Sat | H 2:20a 16.5 ftL 8:18a -1.5 ftH 2:48p 16.5 ftL 8:34p -0.2 ft | 5:50a / 7:55p |
| 30 | Sun | H 2:57a 16.3 ftL 8:48a -1.1 ftH 3:18p 16.7 ftL 9:10p -0.7 ft | 5:52a / 7:52p |
| 31 | Mon | H 3:34a 15.8 ftL 9:20a -0.4 ftH 3:49p 16.7 ftL 9:49p -0.8 ft | 5:54a / 7:50p |
Last QuarterAug 5
New MoonAug 12
First QuarterAug 19
Full MoonAug 27
Tide table — September 2026
Castle Islands, Duncan Canal tides, September 2026
| Day | Tides (height above MLLW) | Sunrise / Sunset | |
|---|---|---|---|
| 1 | Tue | H 4:14a 14.9 ftL 9:54a 0.7 ftH 4:22p 16.4 ftL 10:32p -0.5 ft | 5:56a / 7:47p |
| 2 | Wed | H 5a 13.7 ftL 10:32a 2.0 ftH 5:01p 15.8 ftL 11:22p 0.1 ft | 5:58a / 7:44p |
| 3 | Thu | H 5:56a 12.3 ftL 11:16a 3.5 ftH 5:50p 15.0 ft | 6a / 7:42p |
| 4 | Fri | L 12:21a 1.0 ftH 7:11a 11.1 ftL 12:11p 4.9 ftH 7:01p 14.2 ft | 6:02a / 7:39p |
| 5 | Sat | L 1:36a 1.7 ftH 8:42a 10.8 ftL 1:26p 6.0 ftH 8:30p 13.9 ft | 6:04a / 7:36p |
| 6 | Sun | L 3:15a 1.7 ftH 10:04a 11.5 ftL 3:15p 6.1 ftH 9:51p 14.4 ft | 6:06a / 7:34p |
| 7 | Mon | L 4:43a 0.8 ftH 11:09a 12.8 ftL 4:51p 4.8 ftH 10:59p 15.4 ft | 6:08a / 7:31p |
| 8 | Tue | L 5:42a -0.4 ftH 12p 14.3 ftL 5:53p 3.0 ftH 11:57p 16.4 ft | 6:10a / 7:28p |
| 9 | Wed | L 6:28a -1.3 ftH 12:44p 15.7 ftL 6:41p 1.3 ft | 6:12a / 7:26p |
| 10 | Thu | H 12:48a 17.2 ftL 7:07a -1.8 ftH 1:23p 16.8 ftL 7:22p -0.2 ft | 6:14a / 7:23p |
| 11 | Fri | H 1:33a 17.5 ftL 7:42a -1.9 ftH 2p 17.5 ftL 8p -1.1 ft | 6:16a / 7:20p |
| 12 | Sat | H 2:15a 17.4 ftL 8:14a -1.4 ftH 2:35p 17.8 ftL 8:36p -1.5 ft | 6:18a / 7:18p |
| 13 | Sun | H 2:55a 16.8 ftL 8:46a -0.5 ftH 3:08p 17.6 ftL 9:12p -1.3 ft | 6:20a / 7:15p |
| 14 | Mon | H 3:34a 15.9 ftL 9:16a 0.6 ftH 3:42p 17.0 ftL 9:47p -0.7 ft | 6:22a / 7:12p |
| 15 | Tue | H 4:14a 14.7 ftL 9:47a 2.0 ftH 4:16p 16.0 ftL 10:25p 0.2 ft | 6:24a / 7:09p |
| 16 | Wed | H 4:56a 13.3 ftL 10:20a 3.3 ftH 4:51p 14.8 ftL 11:05p 1.4 ft | 6:26a / 7:07p |
| 17 | Thu | H 5:45a 11.8 ftL 10:56a 4.7 ftH 5:33p 13.6 ftL 11:53p 2.6 ft | 6:28a / 7:04p |
| 18 | Fri | H 6:48a 10.6 ftL 11:39a 6.0 ftH 6:32p 12.4 ft | 6:30a / 7:01p |
| 19 | Sat | L 12:55a 3.6 ftH 8:13a 10.1 ftL 12:41p 7.1 ftH 7:56p 11.8 ft | 6:32a / 6:59p |
| 20 | Sun | L 2:29a 4.1 ftH 9:36a 10.4 ftL 2:27p 7.4 ftH 9:19p 12.0 ft | 6:34a / 6:56p |
| 21 | Mon | L 4:12a 3.5 ftH 10:38a 11.4 ftL 4:26p 6.5 ftH 10:23p 12.8 ft | 6:36a / 6:53p |
| 22 | Tue | L 5:07a 2.4 ftH 11:23a 12.6 ftL 5:20p 5.0 ftH 11:15p 13.8 ft | 6:38a / 6:50p |
| 23 | Wed | L 5:44a 1.4 ftH 12:01p 13.9 ftL 5:57p 3.3 ft | 6:40a / 6:48p |
| 24 | Thu | H 12a 14.8 ftL 6:15a 0.5 ftH 12:35p 15.1 ftL 6:30p 1.7 ft | 6:42a / 6:45p |
| 25 | Fri | H 12:42a 15.7 ftL 6:45a -0.2 ftH 1:07p 16.2 ftL 7:02p 0.1 ft | 6:44a / 6:42p |
| 26 | Sat | H 1:21a 16.3 ftL 7:14a -0.5 ftH 1:38p 17.1 ftL 7:35p -1.1 ft | 6:46a / 6:40p |
| 27 | Sun | H 1:59a 16.7 ftL 7:45a -0.5 ftH 2:10p 17.7 ftL 8:10p -2.0 ft | 6:48a / 6:37p |
| 28 | Mon | H 2:37a 16.6 ftL 8:17a 0.0 ftH 2:42p 18.0 ftL 8:47p -2.4 ft | 6:50a / 6:34p |
| 29 | Tue | H 3:17a 16.1 ftL 8:51a 0.8 ftH 3:15p 17.9 ftL 9:27p -2.2 ft | 6:52a / 6:31p |
| 30 | Wed | H 4a 15.2 ftL 9:28a 1.9 ftH 3:52p 17.3 ftL 10:12p -1.5 ft | 6:54a / 6:29p |
Last QuarterSep 3
New MoonSep 10
First QuarterSep 18
Full MoonSep 26
Every station, offline, forever
Take every tide chart with you — even with zero signal.
Ebb computes tides and solunar bite windows for all 3,399 U.S. stations right on your phone, with no connection required. Unlimited dates, home & lock-screen widgets, and pre-window alerts. $9.99 once — no subscription, ever.
App StoreComing soon — Ebb is in final App Review. Explore what it does →
Nearby stations
Tide charts near Castle Islands, Duncan Canal
About this data
Predictions for Castle Islands, Duncan Canal 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.