Seattle tide calendar, August 2027
High and low tides in local time (America/Los_Angeles), heights in ft above Mean Lower Low Water (MLLW), the US chart datum.
| Day | Tide 1 | Tide 2 | Tide 3 | Tide 4 |
|---|---|---|---|---|
| Sun 1 | High 3:15 AM 11.0 ft | Low 10:32 AM -3.1 ft | High 6:11 PM 11.7 ft | Low 11:23 PM 6.9 ft |
| Mon 2 | High 4:15 AM 11.1 ft | Low 11:20 AM -3.2 ft | High 6:43 PM 12.0 ft | |
| Tue 3 | Low 12:11 AM 5.9 ft | High 5:15 AM 11.0 ft | Low 12:06 PM -2.6 ft | High 7:15 PM 12.3 ft |
| Wed 4 | Low 1:00 AM 4.6 ft | High 6:17 AM 10.6 ft | Low 12:52 PM -1.5 ft | High 7:46 PM 12.5 ft |
| Thu 5 | Low 1:49 AM 3.3 ft | High 7:21 AM 10.1 ft | Low 1:37 PM 0.0 ft | High 8:18 PM 12.4 ft |
| Fri 6 | Low 2:38 AM 2.2 ft | High 8:28 AM 9.6 ft | Low 2:22 PM 1.9 ft | High 8:52 PM 12.2 ft |
| Sat 7 | Low 3:29 AM 1.3 ft | High 9:40 AM 9.1 ft | Low 3:11 PM 3.8 ft | High 9:27 PM 11.7 ft |
| Sun 8 | Low 4:21 AM 0.8 ft | High 11:02 AM 8.7 ft | Low 4:05 PM 5.6 ft | High 10:06 PM 11.1 ft |
| Mon 9 | Low 5:17 AM 0.5 ft | High 12:47 PM 8.8 ft | Low 5:17 PM 7.0 ft | High 10:52 PM 10.4 ft |
| Tue 10 | Low 6:16 AM 0.3 ft | High 2:35 PM 9.4 ft | Low 7:04 PM 7.8 ft | High 11:48 PM 9.8 ft |
| Wed 11 | Low 7:18 AM 0.1 ft | High 3:49 PM 10.2 ft | Low 8:54 PM 7.8 ft | |
| Thu 12 | High 12:52 AM 9.4 ft | Low 8:17 AM -0.1 ft | High 4:40 PM 10.8 ft | Low 10:02 PM 7.4 ft |
| Fri 13 | High 1:58 AM 9.2 ft | Low 9:09 AM -0.4 ft | High 5:18 PM 11.1 ft | Low 10:48 PM 7.0 ft |
| Sat 14 | High 2:55 AM 9.3 ft | Low 9:54 AM -0.6 ft | High 5:49 PM 11.2 ft | Low 11:22 PM 6.6 ft |
| Sun 15 | High 3:44 AM 9.4 ft | Low 10:34 AM -0.7 ft | High 6:13 PM 11.2 ft | Low 11:48 PM 6.2 ft |
| Mon 16 | High 4:26 AM 9.5 ft | Low 11:09 AM -0.6 ft | High 6:31 PM 11.1 ft | |
| Tue 17 | Low 12:10 AM 5.7 ft | High 5:06 AM 9.5 ft | Low 11:42 AM -0.2 ft | High 6:46 PM 11.1 ft |
| Wed 18 | Low 12:32 AM 5.0 ft | High 5:45 AM 9.5 ft | Low 12:14 PM 0.3 ft | High 7:03 PM 11.1 ft |
| Thu 19 | Low 12:59 AM 4.3 ft | High 6:26 AM 9.5 ft | Low 12:46 PM 1.0 ft | High 7:23 PM 11.2 ft |
| Fri 20 | Low 1:30 AM 3.4 ft | High 7:11 AM 9.4 ft | Low 1:18 PM 1.9 ft | High 7:47 PM 11.3 ft |
| Sat 21 | Low 2:05 AM 2.5 ft | High 8:00 AM 9.2 ft | Low 1:53 PM 3.1 ft | High 8:13 PM 11.2 ft |
| Sun 22 | Low 2:45 AM 1.7 ft | High 8:54 AM 9.1 ft | Low 2:31 PM 4.3 ft | High 8:42 PM 11.0 ft |
| Mon 23 | Low 3:28 AM 1.1 ft | High 9:56 AM 8.9 ft | Low 3:13 PM 5.6 ft | High 9:14 PM 10.7 ft |
| Tue 24 | Low 4:18 AM 0.6 ft | High 11:11 AM 8.8 ft | Low 4:05 PM 6.9 ft | High 9:51 PM 10.3 ft |
| Wed 25 | Low 5:15 AM 0.3 ft | High 12:51 PM 8.9 ft | Low 5:21 PM 7.8 ft | High 10:42 PM 10.0 ft |
| Thu 26 | Low 6:19 AM -0.1 ft | High 2:42 PM 9.5 ft | Low 7:03 PM 8.3 ft | High 11:50 PM 9.8 ft |
| Fri 27 | Low 7:25 AM -0.7 ft | High 3:47 PM 10.1 ft | Low 8:34 PM 8.0 ft | |
| Sat 28 | High 1:06 AM 9.9 ft | Low 8:28 AM -1.3 ft | High 4:27 PM 10.7 ft | Low 9:35 PM 7.3 ft |
| Sun 29 | High 2:17 AM 10.2 ft | Low 9:24 AM -1.7 ft | High 4:58 PM 11.2 ft | Low 10:23 PM 6.2 ft |
| Mon 30 | High 3:22 AM 10.6 ft | Low 10:14 AM -1.8 ft | High 5:25 PM 11.7 ft | Low 11:07 PM 4.8 ft |
| Tue 31 | High 4:24 AM 10.8 ft | Low 11:01 AM -1.4 ft | High 5:53 PM 12.0 ft | Low 11:49 PM 3.4 ft |
Calculated by Marinalo from the Seattle tide station: harmonic constants published by NOAA CO-OPS (public domain). Not for navigation. How we calculate tides.