Seattle (Puget Sound) tide windows

Name: Seattle (Puget Sound) daylight low-tide windows
Creator: Tidewindow
License: https://creativecommons.org/licenses/by/4.0/

NOAA 9447130

Central Puget Sound reference station. Summer minus tides here expose broad gravel-and-boulder flats at Alki and Constellation Park.

Covers: Alki Beach · Constellation Park · Golden Gardens

Next best window · computed 2026-08-18

Sep 7, 2026 (Mon): the tide bottoms at -0.9 ft at 8:12 AM — walkable 6:25 AM–10:05 AM, arrive by 7:12 AM. 77 · Great

Every daylight window, next 30 days

Heights in feet MLLW from NOAA station 9447130 (Seattle) predictions. ✳ = federal holiday.

Date	Low	Height	Window	Daylight	Score
Aug 21, 2026 Fri	6:20 AM	0.9 ft	5:55 AM–6:25 AM	0h 11m	0 · Skip
Aug 22, 2026 Sat	7:22 AM	0.8 ft	6:45 AM–8:05 AM	1h 20m	33 · Skip
Aug 23, 2026 Sun	8:20 AM	0.5 ft	7:25 AM–9:20 AM	1h 55m	39 · Skip
Aug 24, 2026 Mon	9:11 AM	0.2 ft	7:55 AM–10:25 AM	2h 30m	42 · Fair
Aug 25, 2026 Tue	9:55 AM	-0.1 ft	8:30 AM–11:20 AM	2h 50m	51 · Fair
Aug 26, 2026 Wed	10:33 AM	-0.3 ft	9:05 AM–12:05 PM	3h 0m	57 · Fair
Aug 27, 2026 Thu	11:08 AM	-0.3 ft	9:45 AM–12:30 PM	2h 45m	54 · Fair
Aug 28, 2026 Fri	11:42 AM	-0.0 ft	10:35 AM–12:55 PM	2h 20m	49 · Fair
Aug 29, 2026 Sat	12:17 PM	0.6 ft	11:40 AM–1:00 PM	1h 20m	33 · Skip
Sep 1, 2026 Tue	2:15 AM	0.8 ft	1:50 AM–2:30 AM	night	0 · Skip
Sep 2, 2026 Wed	3:00 AM	0.0 ft	1:50 AM–4:10 AM	night	0 · Skip
Sep 3, 2026 Thu	3:51 AM	-0.4 ft	2:25 AM–5:20 AM	night	0 · Skip
Sep 4, 2026 Fri	4:49 AM	-0.6 ft	3:10 AM–6:30 AM	night	0 · Skip
Sep 5, 2026 Sat	5:55 AM	-0.7 ft	4:10 AM–7:40 AM	1h 6m	52 · Fair
Sep 6, 2026 Sun	7:05 AM	-0.8 ft	5:20 AM–8:55 AM	2h 20m	67 · Good
Sep 7, 2026 Mon ✳	8:12 AM	-0.9 ft	6:25 AM–10:05 AM	3h 29m	77 · Great
Sep 8, 2026 Tue	9:12 AM	-1.0 ft	7:25 AM–11:05 AM	3h 40m	68 · Good
Sep 9, 2026 Wed	10:04 AM	-0.9 ft	8:30 AM–11:45 AM	3h 15m	65 · Good
Sep 10, 2026 Thu	10:51 AM	-0.3 ft	9:30 AM–12:10 PM	2h 40m	52 · Fair
Sep 11, 2026 Fri	11:34 AM	0.5 ft	10:50 AM–12:15 PM	1h 25m	27 · Skip
Sep 14, 2026 Mon	1:28 AM	0.6 ft	12:50 AM–2:10 AM	night	0 · Skip
Sep 15, 2026 Tue	2:06 AM	0.2 ft	1:00 AM–3:10 AM	night	0 · Skip
Sep 16, 2026 Wed	2:46 AM	0.1 ft	1:40 AM–4:00 AM	night	0 · Skip
Sep 17, 2026 Thu	3:30 AM	0.4 ft	2:30 AM–4:30 AM	night	0 · Skip

Monthly calendars

July 2026 August 2026 September 2026

What's in the pools right now

Research-grade observations within 5 km in the last 60 days, via iNaturalist (data © contributors, CC BY-NC).

Species	Scientific name	Observations
White-lined Dirona	Dirona albolineata	10
White-and-orange-tipped Nudibranch	Antiopella fusca	9
Rough Keyhole Limpet	Diodora aspera	8
Woody Chiton	Mopalia lignosa	7
Monterey Dorid	Doris montereyensis	6
Frilled Dogwinkle	Nucella lamellosa	6
Horned Nudibranch	Hermissenda crassicornis	5
Lined Chiton	Tonicella lineata	3
—	Aeolidia	2
Merten's Chiton	Lepidozona mertensii	2

Quick answers

When is the next good low tide at Seattle (Puget Sound)?

Sep 7, 2026 (Mon): a -0.9 ft low at 8:12 AM, walkable from 6:25 AM to 10:05 AM — score 77/100. Computed from NOAA station 9447130 predictions.

How low does the tide need to be at Seattle (Puget Sound)?

Tidewindow counts a window whenever the predicted height falls below +1.0 ft MLLW, and scores depth from +0.5 ft (0 points) to −2.0 ft (50 points). The lower the tide, the more of the intertidal zone is exposed — minus tides (below 0 ft) are when Alki Beach is at its best.

How many daylight minus tides does Seattle (Puget Sound) get in the next 30 days?

10 of the next 30 days' 12 minus tides overlap daylight by at least 30 minutes, as of 2026-08-18. The full list is in the table above.

Safety: tide predictions are astronomical forecasts, not observations — wind and swell change actual water levels. Follow posted rules at protected areas, and never turn your back on the ocean. See our methodology for exactly how windows and scores are computed.