Washington · United States

Seattle, WA tide times

Name: Seattle, WA tide data — high & low extrema, next 7 days
Creator: TideTurtle
License: https://www.noaa.gov/disclaimer

Tide is currently falling — next low in 2h 23m

3.54 m / 11.6ft

Next high · 03:58 GMT-7

Heights relative to MLLW · 2026-05-15Coef. 29Solunar 4/5

Tide times at Seattle, WA on Friday, 15 May 2026: first high tide at 05:30pm, first low tide at 10:43pm. Sunrise 05:31am, sunset 08:39pm.

TIDE CURVE

Next 24 hours at Seattle, WA

Predictions: NOAA CO-OPS station 9447130 — heights relative to MLLW.

Harmonic prediction from the official tide authority. Very high accuracy under normal conditions; storm surge may shift actual water level. Not for navigation.

TODAY'S HIGHLIGHTS

Sun, moon and conditions on Fri 15 May

Sunrise

05:31

Sunset

20:39

Moon

New moon

3% illuminated

Coefficient

Neap cycle

Marine-conditions data not available for this station. Wind, swell and water temperature ride along with Open-Meteo Marine; gauge-only stations (e.g. UK EA Flood) publish water level only.

7-DAY OUTLOOK

Highs and lows next 7 days

Today

1.9m / 6.3ft22:43

Coef. 29

Sat

3.5m / 11.6ft03:58

-0.9m / -3.1ft11:07

Coef. 92

Sun

3.5m / 11.6ft04:35

-1.2m / -3.8ft11:51

Coef. 100

Mon

3.5m / 11.4ft05:17

2.3m / 7.5ft00:30

Coef. 102

Tue

3.3m / 10.9ft06:05

2.4m / 7.7ft01:27

Coef. 100

Wed

3.1m / 10.3ft07:00

2.3m / 7.7ft02:30

Coef. 94

Thu

2.9m / 9.4ft08:03

2.2m / 7.4ft03:42

Coef. 86

All extrema (7 days)

Day	Type	Time	Height	Coef.
Fri 15 May	Low	22:43	1.9m / 6.3ft	29
Sat 16 May	High	03:58	3.5m / 11.6ft	92
	Low	11:07	-0.9m / -3.1ft
	High	18:25	3.5m / 11.6ft
	Low	23:36	2.1m / 7.0ft
Sun 17 May	High	04:35	3.5m / 11.6ft	100
	Low	11:51	-1.2m / -3.8ft
	High	19:19	3.7m / 12.1ft
Mon 18 May	Low	00:30	2.3m / 7.5ft	102
	High	05:17	3.5m / 11.4ft
	Low	12:37	-1.2m / -4.0ft
	High	20:13	3.7m / 12.2ft
Tue 19 May	Low	01:27	2.4m / 7.7ft	100
	High	06:05	3.3m / 10.9ft
	Low	13:26	-1.1m / -3.7ft
	High	21:08	3.7m / 12.2ft
Wed 20 May	Low	02:30	2.3m / 7.7ft	94
	High	07:00	3.1m / 10.3ft
	Low	14:18	-0.9m / -3.0ft
	High	22:03	3.7m / 12.0ft
Thu 21 May	Low	03:42	2.2m / 7.4ft	86
	High	08:03	2.9m / 9.4ft
	Low	15:12	-0.6m / -1.9ft
	High	22:58	3.6m / 11.9ft

Predictions: NOAA CO-OPS station 9447130 — heights relative to MLLW. · Not for navigation.

SOLUNAR FORECAST

Today's solunar windows

The angler tradition for major/minor fishing windows: major ≈3-hour windows around moon transit and opposition; minor ≈2-hour windows around moonrise and moonset. Times are America/Los Angeles local. Folk tradition, not a scientific forecast.

Major

22:02-01:02

10:30-13:30

Minor

17:28-19:28

03:23-05:23

7-day window outlook

Fri
2 M / 2 m
Sat
2 M / 2 m
Sun
2 M / 2 m
Mon
2 M / 2 m
Tue
2 M / 2 m
Wed
1 M / 2 m
Thu
2 M / 2 m

SPRING AND NEAP CYCLE

Cycle dates near Seattle, WA

Next spring tide on Sun 17 May (range 4.9m / 16.1ft). Last neap on Fri 15 May. Next neap on Fri 22 May.

Spring tides cluster around new and full moons (biggest swings). Neap tides land on quarter moons (smallest swings). See the spring tide and neap tide glossary entries for the why.

EDITORIAL

About tides at Seattle, WA

Seattle sits on Elliott Bay, where Puget Sound's inland-sea tide reaches the city after rolling in from the Strait of Juan de Fuca. The gauge is at Pier 36, and the tide signature here is a textbook example of an amplified mixed semidiurnal pattern — mean range about 2.3 metres, with the daily lower low and higher high often three metres or more apart. The pattern is two highs and two lows of unequal size each day, and the asymmetry is sharp: the morning low and the evening low can differ by a metre, and the same for the highs. That changes the day for anyone walking the waterfront, kayaking out of Alki, or watching boats lock through Ballard. The lowest lows of the month — clustering around new and full moons, especially in summer afternoons — pull water off the inner-shelf flats at Lincoln Park and Discovery Park, opening the rocky intertidal for hours. Predictions on this page come from NOAA CO-OPS station 9447130. Pacific storm systems in winter can lift water levels 20–30 cm above predicted, and a strong south wind down the Sound can add to that on top of spring tide.

COMMON QUESTIONS

Tide questions about Seattle, WA

When is the next high tide at Seattle?

The hero block shows the next high tide at the Pier 36 gauge in local Pacific time, height above MLLW. The 7-day table breaks out all daily extremes — note that Puget Sound's mixed semidiurnal pattern produces a sharp asymmetry, with the lower low often more than a metre below the higher low in summer.

Why is the tide range so big at Seattle?

Puget Sound is a long, deep inland sea connected to the Pacific via the Strait of Juan de Fuca. The tidal wave that enters the strait amplifies as it propagates inland, so the range at Seattle (about 2.3 metres mean) is roughly twice what you'd see on the open Washington coast. Olympia at the head of the Sound runs higher still.

When are the best lowest-tide windows for shoreline exploring?

Seattle's lowest-low tides cluster around new and full moons, with the biggest summer-afternoon lows at Discovery Park, Lincoln Park, and the West Seattle shoreline. The lower of the two daily lows is what to watch — when it falls below 0 metres MLLW, intertidal shelf opens up that's covered the rest of the month. The 7-day table on this page flags each day's lowest predicted tide.

Where do these tide predictions come from?

NOAA CO-OPS station 9447130, Seattle (Pier 36). NOAA's harmonic predictions for Puget Sound stations are calibrated against decades of gauge data at each location. Accuracy is high under normal weather; storm surge and strong wind setup down the Sound can shift actual water level by 20–30 cm or more.

Is this safe to use for navigation?

No. For piloting in Puget Sound use NOAA's authoritative tide and current products and USCG notices. Currents at the Tacoma Narrows, Deception Pass, and Agate Pass are some of the strongest in the lower 48 — those are real-time navigational decisions, not tide-table decisions.

30-day tide table — Seattle, WA

Heights relative to MLLW. Predictions: NOAA CO-OPS station 9447130 — heights relative to MLLW.

Day	Type	Time	Height
Fri 15 May	High	17:30	3.3m / 10.9ft
	Low	22:43	1.9m / 6.3ft
Sat 16 May	High	03:58	3.5m / 11.6ft
	Low	11:07	-0.9m / -3.1ft
	High	18:25	3.5m / 11.6ft
	Low	23:36	2.1m / 7.0ft
Sun 17 May	High	04:35	3.5m / 11.6ft
	Low	11:51	-1.2m / -3.8ft
	High	19:19	3.7m / 12.1ft
Mon 18 May	Low	00:30	2.3m / 7.5ft
	High	05:17	3.5m / 11.4ft
	Low	12:37	-1.2m / -4.0ft
	High	20:13	3.7m / 12.2ft
Tue 19 May	Low	01:27	2.4m / 7.7ft
	High	06:05	3.3m / 10.9ft
	Low	13:26	-1.1m / -3.7ft
	High	21:08	3.7m / 12.2ft
Wed 20 May	Low	02:30	2.3m / 7.7ft
	High	07:00	3.1m / 10.3ft
	Low	14:18	-0.9m / -3.0ft
	High	22:03	3.7m / 12.0ft
Thu 21 May	Low	03:42	2.2m / 7.4ft
	High	08:03	2.9m / 9.4ft
	Low	15:12	-0.6m / -1.9ft
	High	22:58	3.6m / 11.9ft
Fri 22 May	Low	05:03	2.0m / 6.6ft
	High	09:18	2.6m / 8.5ft
	Low	16:09	-0.2m / -0.5ft
	High	23:51	3.6m / 11.7ft
Sat 23 May	Low	06:23	1.7m / 5.5ft
	High	10:48	2.4m / 7.7ft
	Low	17:09	0.3m / 1.0ft
Sun 24 May	High	00:38	3.5m / 11.6ft
	Low	07:28	1.3m / 4.1ft
	High	12:30	2.3m / 7.4ft
	Low	18:13	0.8m / 2.5ft
Mon 25 May	High	01:20	3.5m / 11.5ft
	Low	08:19	0.8m / 2.7ft
	High	14:11	2.4m / 7.7ft
	Low	19:21	1.2m / 3.9ft
Tue 26 May	High	01:56	3.5m / 11.3ft
	Low	09:01	0.4m / 1.4ft
	High	15:35	2.6m / 8.5ft
	Low	20:28	1.6m / 5.1ft
Wed 27 May	High	02:27	3.4m / 11.1ft
	Low	09:36	0.1m / 0.2ft
	High	16:42	2.9m / 9.4ft
	Low	21:32	1.9m / 6.1ft
Thu 28 May	High	02:56	3.3m / 10.8ft
	Low	10:07	-0.2m / -0.6ft
	High	17:37	3.1m / 10.3ft
	Low	22:29	2.1m / 6.8ft
Fri 29 May	High	03:24	3.2m / 10.6ft
	Low	10:36	-0.4m / -1.3ft
	High	18:22	3.3m / 10.9ft
	Low	23:21	2.2m / 7.3ft
Sat 30 May	High	03:53	3.1m / 10.3ft
	Low	11:06	-0.5m / -1.7ft
	High	19:00	3.4m / 11.3ft
Sun 31 May	Low	00:07	2.3m / 7.7ft
	High	04:25	3.0m / 10.0ft
	Low	11:37	-0.6m / -1.9ft
	High	19:34	3.5m / 11.4ft
Mon 01 Jun	Low	00:49	2.4m / 7.8ft
	High	04:59	3.0m / 9.7ft
	Low	12:11	-0.6m / -1.9ft
	High	20:06	3.5m / 11.5ft
Tue 02 Jun	Low	01:29	2.4m / 7.8ft
	High	05:35	2.9m / 9.5ft
	Low	12:48	-0.5m / -1.8ft
	High	20:37	3.5m / 11.5ft
Wed 03 Jun	Low	02:10	2.4m / 7.7ft
	High	06:15	2.8m / 9.2ft
	Low	13:26	-0.5m / -1.6ft
	High	21:11	3.5m / 11.4ft
Thu 04 Jun	Low	02:53	2.3m / 7.5ft
	High	06:58	2.7m / 8.8ft
	Low	14:07	-0.4m / -1.2ft
	High	21:46	3.5m / 11.4ft
Fri 05 Jun	Low	03:41	2.2m / 7.2ft
	High	07:47	2.6m / 8.4ft
	Low	14:49	-0.2m / -0.6ft
	High	22:22	3.5m / 11.4ft
Sat 06 Jun	Low	04:34	2.0m / 6.6ft
	High	08:45	2.4m / 7.9ft
	Low	15:32	0.1m / 0.2ft
	High	22:59	3.5m / 11.4ft
Sun 07 Jun	Low	05:27	1.8m / 5.8ft
	High	09:55	2.3m / 7.4ft
	Low	16:19	0.4m / 1.3ft
	High	23:34	3.5m / 11.4ft
Mon 08 Jun	Low	06:17	1.4m / 4.6ft
	High	11:17	2.2m / 7.2ft
	Low	17:09	0.8m / 2.6ft
Tue 09 Jun	High	00:09	3.5m / 11.4ft
	Low	07:04	1.0m / 3.1ft
	High	12:47	2.2m / 7.4ft
	Low	18:06	1.2m / 4.1ft
Wed 10 Jun	High	00:43	3.5m / 11.4ft
	Low	07:48	0.5m / 1.5ft
	High	14:16	2.5m / 8.1ft
	Low	19:10	1.7m / 5.5ft
Thu 11 Jun	High	01:18	3.5m / 11.5ft
	Low	08:31	-0.1m / -0.2ft
	High	15:36	2.8m / 9.2ft
	Low	20:18	2.0m / 6.6ft
Fri 12 Jun	High	01:55	3.5m / 11.5ft
	Low	09:15	-0.5m / -1.8ft
	High	16:42	3.1m / 10.3ft
	Low	21:26	2.3m / 7.5ft
Sat 13 Jun	High	02:35	3.5m / 11.6ft
	Low	10:00	-0.9m / -3.1ft
	High	17:40	3.4m / 11.2ft
	Low	22:29	2.4m / 8.0ft

Not for navigation. Generated 2026-05-16T03:20:13.073Z.

Predictions: NOAA CO-OPS station 9447130 — heights relative to MLLW.

Methodology Glossary

Not for navigation. Page generated 2026-05-16T03:20:13.073Z. Predictions refresh daily.