Harbor Bay, Great Swan Island Tide Chart & Fishing Times
Tide times, heights, and solunar bite windows for Harbor Bay, Great Swan Island, Florida — August 2026 & September 2026. Every value is computed from NOAA harmonic constituents, the same offline engine that powers the Ebb app.
NOAA Station
TEC5661
Type
Subordinate (offset)
Coordinates
17.400, -83.933
Time Zone
Chicago
Sun, moon & bite windows
Sunday, August 2
Sunday, August 2
Sunrise 6:15 AM · Sunset 7:08 PM · Moon Waning Gibbous (84% lit)
Low 4:49a · 0.2 ftHigh 10:44a · 0.9 ftLow 5:26p · 0.1 ftHigh 11:18p · 0.8 ft
Major window ★★★
2:25a – 4:25a
Minor window ★★★
9:05a – 10:05a
Major window ★★★
2:44p – 4:44p
Minor window ★★★
9:22p – 10:22p
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.
Tuesday, Aug 4 ★★★
Major window overlaps dawn/dusk or a tide swing
Major windows: 3:53a–5:53a, 4:15p–6:15p
Wednesday, Aug 5 ★★★
Major window overlaps dawn/dusk or a tide swing
Major windows: 4:42a–6:42a, 5:06p–7:06p
Thursday, Aug 6 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 5:35a–7:35a, 6:02p–8:02p
Friday, Aug 7 ★★★
Major window stacks with dawn/dusk and a tide swing
Major windows: 6:33a–8:33a, 7:04p–9:04p
Tuesday, Aug 18 ★★★
Major window overlaps dawn/dusk or a tide swing
Major windows: 3:57a–5:57a, 4:19p–6:19p
Wednesday, Aug 19 ★★★
Major window overlaps dawn/dusk or a tide swing
Major windows: 4:44a–6:44a, 5:07p–7:07p
Tide table — August 2026
Harbor Bay, Great Swan Island tides, August 2026
All high and low tides for Harbor Bay, Great Swan Island, in local time (Chicago). Heights are feet above Mean Lower Low Water (MLLW).
| Day | Tides (height above MLLW) | Sunrise / Sunset | |
|---|---|---|---|
| 1 | Sat | L 4:01a 0.2 ftH 10:01a 1.0 ftL 4:56p 0.1 ftH 10:48p 0.8 ft | 6:15a / 7:08p |
| 2 | Sun | L 4:49a 0.2 ftH 10:44a 0.9 ftL 5:26p 0.1 ftH 11:18p 0.8 ft | 6:15a / 7:08p |
| 3 | Mon | L 5:45a 0.2 ftH 11:31a 0.8 ftL 5:55p 0.2 ftH 11:51p 0.9 ft | 6:15a / 7:07p |
| 4 | Tue | L 6:46a 0.1 ftH 12:25p 0.7 ftL 6:29p 0.2 ft | 6:15a / 7:07p |
| 5 | Wed | H 12:29a 0.9 ftL 7:56a 0.1 ftH 1:33p 0.6 ftL 7:08p 0.3 ft | 6:16a / 7:07p |
| 6 | Thu | H 1:17a 0.9 ftL 9:11a 0.1 ftH 3:08p 0.5 ftL 7:56p 0.3 ft | 6:16a / 7:06p |
| 7 | Fri | H 2:19a 1.0 ftL 10:28a 0.0 ftH 4:50p 0.4 ftL 8:57p 0.4 ft | 6:16a / 7:05p |
| 8 | Sat | H 3:33a 1.0 ftL 11:42a 0.0 ftH 6:06p 0.5 ftL 10:11p 0.4 ft | 6:17a / 7:05p |
| 9 | Sun | H 4:47a 1.1 ftL 12:45p -0.1 ftH 6:59p 0.5 ftL 11:25p 0.3 ft | 6:17a / 7:04p |
| 10 | Mon | H 5:54a 1.1 ftL 1:38p -0.1 ftH 7:41p 0.6 ft | 6:17a / 7:04p |
| 11 | Tue | L 12:32a 0.3 ftH 6:55a 1.2 ftL 2:23p -0.1 ftH 8:18p 0.6 ft | 6:17a / 7:03p |
| 12 | Wed | L 1:33a 0.2 ftH 7:51a 1.2 ftL 3:03p 0.0 ftH 8:53p 0.7 ft | 6:18a / 7:03p |
| 13 | Thu | L 2:29a 0.2 ftH 8:42a 1.2 ftL 3:40p 0.0 ftH 9:27p 0.8 ft | 6:18a / 7:02p |
| 14 | Fri | L 3:23a 0.1 ftH 9:30a 1.1 ftL 4:16p 0.1 ftH 10:01p 0.9 ft | 6:18a / 7:02p |
| 15 | Sat | L 4:16a 0.1 ftH 10:17a 1.0 ftL 4:50p 0.2 ftH 10:35p 0.9 ft | 6:18a / 7:01p |
| 16 | Sun | L 5:10a 0.1 ftH 11:02a 0.9 ftL 5:25p 0.2 ftH 11:09p 1.0 ft | 6:18a / 7p |
| 17 | Mon | L 6:06a 0.2 ftH 11:47a 0.8 ftL 5:59p 0.3 ftH 11:45p 1.0 ft | 6:19a / 7p |
| 18 | Tue | L 7:06a 0.2 ftH 12:36p 0.7 ftL 6:34p 0.4 ft | 6:19a / 6:59p |
| 19 | Wed | H 12:26a 1.0 ftL 8:12a 0.2 ftH 1:39p 0.6 ftL 7:12p 0.4 ft | 6:19a / 6:58p |
| 20 | Thu | H 1:14a 0.9 ftL 9:23a 0.2 ftH 3:25p 0.5 ftL 7:59p 0.4 ft | 6:19a / 6:58p |
| 21 | Fri | H 2:13a 0.9 ftL 10:37a 0.2 ftH 5:34p 0.5 ftL 9:05p 0.5 ft | 6:20a / 6:57p |
| 22 | Sat | H 3:24a 0.9 ftL 11:45a 0.2 ftH 6:30p 0.5 ftL 10:19p 0.5 ft | 6:20a / 6:56p |
| 23 | Sun | H 4:31a 0.9 ftL 12:39p 0.2 ftH 6:58p 0.6 ftL 11:24p 0.5 ft | 6:20a / 6:55p |
| 24 | Mon | H 5:29a 1.0 ftL 1:20p 0.2 ftH 7:20p 0.6 ft | 6:20a / 6:55p |
| 25 | Tue | L 12:18a 0.4 ftH 6:18a 1.0 ftL 1:54p 0.1 ftH 7:43p 0.7 ft | 6:20a / 6:54p |
| 26 | Wed | L 1:05a 0.4 ftH 7:02a 1.1 ftL 2:23p 0.2 ftH 8:07p 0.8 ft | 6:20a / 6:53p |
| 27 | Thu | L 1:47a 0.4 ftH 7:44a 1.1 ftL 2:50p 0.2 ftH 8:33p 0.8 ft | 6:21a / 6:53p |
| 28 | Fri | L 2:28a 0.3 ftH 8:26a 1.1 ftL 3:16p 0.2 ftH 9p 0.9 ft | 6:21a / 6:52p |
| 29 | Sat | L 3:09a 0.2 ftH 9:08a 1.1 ftL 3:43p 0.2 ftH 9:29p 1.0 ft | 6:21a / 6:51p |
| 30 | Sun | L 3:52a 0.2 ftH 9:51a 1.0 ftL 4:11p 0.3 ftH 9:59p 1.0 ft | 6:21a / 6:50p |
| 31 | Mon | L 4:38a 0.2 ftH 10:35a 0.9 ftL 4:40p 0.3 ftH 10:31p 1.0 ft | 6:21a / 6:49p |
Last QuarterAug 5
New MoonAug 12
First QuarterAug 19
Full MoonAug 27
Tide table — September 2026
Harbor Bay, Great Swan Island tides, September 2026
| Day | Tides (height above MLLW) | Sunrise / Sunset | |
|---|---|---|---|
| 1 | Tue | L 5:30a 0.1 ftH 11:24a 0.8 ftL 5:10p 0.3 ftH 11:07p 1.1 ft | 6:21a / 6:49p |
| 2 | Wed | L 6:29a 0.1 ftH 12:21p 0.7 ftL 5:45p 0.4 ftH 11:51p 1.1 ft | 6:22a / 6:48p |
| 3 | Thu | L 7:39a 0.1 ftH 1:35p 0.6 ftL 6:25p 0.4 ft | 6:22a / 6:47p |
| 4 | Fri | H 12:47a 1.1 ftL 8:59a 0.1 ftH 3:17p 0.5 ftL 7:23p 0.5 ft | 6:22a / 6:46p |
| 5 | Sat | H 2:03a 1.1 ftL 10:20a 0.2 ftH 4:53p 0.6 ftL 8:47p 0.5 ft | 6:22a / 6:45p |
| 6 | Sun | H 3:31a 1.1 ftL 11:34a 0.1 ftH 5:52p 0.6 ftL 10:16p 0.5 ft | 6:22a / 6:45p |
| 7 | Mon | H 4:51a 1.1 ftL 12:32p 0.1 ftH 6:33p 0.7 ftL 11:34p 0.4 ft | 6:22a / 6:44p |
| 8 | Tue | H 5:57a 1.2 ftL 1:18p 0.2 ftH 7:09p 0.8 ft | 6:22a / 6:43p |
| 9 | Wed | L 12:39a 0.3 ftH 6:55a 1.2 ftL 1:56p 0.2 ftH 7:41p 0.9 ft | 6:23a / 6:42p |
| 10 | Thu | L 1:35a 0.3 ftH 7:46a 1.2 ftL 2:30p 0.2 ftH 8:13p 1.0 ft | 6:23a / 6:41p |
| 11 | Fri | L 2:27a 0.2 ftH 8:33a 1.2 ftL 3:03p 0.3 ftH 8:45p 1.1 ft | 6:23a / 6:41p |
| 12 | Sat | L 3:14a 0.2 ftH 9:18a 1.1 ftL 3:34p 0.3 ftH 9:16p 1.1 ft | 6:23a / 6:40p |
| 13 | Sun | L 4:01a 0.2 ftH 9:59a 1.0 ftL 4:06p 0.4 ftH 9:47p 1.1 ft | 6:23a / 6:39p |
| 14 | Mon | L 4:47a 0.2 ftH 10:40a 0.9 ftL 4:36p 0.4 ftH 10:20p 1.1 ft | 6:23a / 6:38p |
| 15 | Tue | L 5:36a 0.2 ftH 11:21a 0.8 ftL 5:07p 0.4 ftH 10:56p 1.1 ft | 6:23a / 6:37p |
| 16 | Wed | L 6:29a 0.2 ftH 12:06p 0.7 ftL 5:36p 0.5 ftH 11:35p 1.1 ft | 6:23a / 6:36p |
| 17 | Thu | L 7:30a 0.3 ftH 1:03p 0.6 ftL 6:04p 0.5 ft | 6:24a / 6:35p |
| 18 | Fri | H 12:23a 1.0 ftL 8:40a 0.3 ftH 2:39p 0.6 ftL 6:41p 0.6 ft | 6:24a / 6:35p |
| 19 | Sat | H 1:25a 1.0 ftL 9:55a 0.3 ftH 5:09p 0.6 ftL 8:21p 0.6 ft | 6:24a / 6:34p |
| 20 | Sun | H 2:42a 1.0 ftL 11:03a 0.3 ftH 5:45p 0.7 ftL 9:59p 0.6 ft | 6:24a / 6:33p |
| 21 | Mon | H 3:59a 1.0 ftL 11:57a 0.3 ftH 6:05p 0.7 ftL 11:09p 0.6 ft | 6:24a / 6:32p |
| 22 | Tue | H 5:02a 1.0 ftL 12:37p 0.3 ftH 6:26p 0.8 ft | 6:24a / 6:31p |
| 23 | Wed | L 12:04a 0.5 ftH 5:55a 1.1 ftL 1:09p 0.3 ftH 6:49p 0.9 ft | 6:24a / 6:30p |
| 24 | Thu | L 12:50a 0.4 ftH 6:42a 1.1 ftL 1:37p 0.3 ftH 7:15p 1.0 ft | 6:24a / 6:30p |
| 25 | Fri | L 1:32a 0.4 ftH 7:27a 1.1 ftL 2:04p 0.4 ftH 7:42p 1.0 ft | 6:25a / 6:29p |
| 26 | Sat | L 2:13a 0.3 ftH 8:11a 1.1 ftL 2:31p 0.4 ftH 8:11p 1.1 ft | 6:25a / 6:28p |
| 27 | Sun | L 2:55a 0.2 ftH 8:56a 1.1 ftL 2:59p 0.4 ftH 8:42p 1.2 ft | 6:25a / 6:27p |
| 28 | Mon | L 3:38a 0.1 ftH 9:42a 1.0 ftL 3:29p 0.4 ftH 9:16p 1.2 ft | 6:25a / 6:26p |
| 29 | Tue | L 4:25a 0.1 ftH 10:30a 0.9 ftL 4p 0.4 ftH 9:53p 1.2 ft | 6:25a / 6:25p |
| 30 | Wed | L 5:18a 0.1 ftH 11:22a 0.8 ftL 4:34p 0.5 ftH 10:37p 1.2 ft | 6:25a / 6:25p |
Last QuarterSep 3
New MoonSep 10
First QuarterSep 18
Full MoonSep 26
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Tide charts near Harbor Bay, Great Swan Island
About this data
Predictions for Harbor Bay, Great Swan 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.