Tides Today & Tomorrow in Seattle, WA

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently falling in Seattle, WA.
Next low tide : in 4h 56m at 10:19 am (-2.6 ft)
Next high tide : 5:58 pm (11.7 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 6:00 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9447130
Common Questions About Tides

Seattle, WA Tides - Nov 1943

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:2311.67:0810.51:22-1.52:016.47:525:53Waxing Crescent1Mon
2Tue9:1611.67:5310.02:07-1.52:586.87:545:51Waxing Crescent2Tue
3Wed10:1511.58:509.42:57-1.14:057.07:555:50First Quarter3Wed
4Thu11:1911.410:038.83:52-0.55:266.77:575:48First Quarter4Thu
5Fri12:2511.54:540.26:496.07:585:47First Quarter5Fri
6Sat1:2311.66:011.17:574.88:005:45First Quarter6Sat
7Sun1:048.42:1211.87:101.88:493.48:015:44Waxing Gibbous7Sun
8Mon2:289.02:5411.98:162.59:322.08:035:42Waxing Gibbous8Mon
9Tue3:399.73:3112.09:163.210:120.78:045:41Waxing Gibbous9Tue
10Wed4:3910.44:0512.010:113.910:49-0.48:065:40Full Moon10Wed
11Thu5:3311.04:3811.811:014.611:26-1.18:075:38Full Moon11Thu
12Fri6:2211.55:1211.411:505.38:095:37Full Moon12Fri
13Sat7:0911.85:4711.012:02-1.512:386.08:105:36Full Moon13Sat
14Sun7:5511.96:2410.412:39-1.61:286.58:125:35Waning Gibbous14Sun
15Mon8:3911.97:049.81:17-1.42:216.88:135:34Waning Gibbous15Mon
16Tue9:2411.87:499.11:57-0.93:207.08:155:32Waning Gibbous16Tue
17Wed10:1211.68:418.42:40-0.24:307.08:165:31Waning Gibbous17Wed
18Thu11:0111.49:457.73:260.75:516.68:185:30Third Quarter18Thu
19Fri11:5211.211:047.34:171.67:035.98:195:29Third Quarter19Fri
20Sat12:4111.15:142.57:555.18:215:28Third Quarter20Sat
21Sun12:317.31:2511.16:163.38:314.28:225:27Third Quarter21Sun
22Mon1:537.72:0311.27:184.09:013.28:245:26Waning Crescent22Mon
23Tue3:008.32:3611.38:174.59:282.18:255:26Waning Crescent23Tue
24Wed3:549.13:0711.39:105.09:571.08:265:25Waning Crescent24Wed
25Thu4:409.93:3711.49:575.510:27-0.18:285:24Waning Crescent25Thu
26Fri5:2310.74:0811.410:435.911:01-1.18:295:23New Moon26Fri
27Sat6:0411.34:4111.411:276.411:38-1.98:305:22New Moon27Sat
28Sun6:4711.95:1711.312:136.78:325:22New Moon28Sun
29Mon7:3212.25:5711.112:18-2.41:017.08:335:21Waxing Crescent29Mon
30Tue8:1912.56:4410.71:01-2.51:547.18:345:21Waxing Crescent30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9447130)

Common Questions About Seattle, WA Tides

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What time does the tide turn (slack tide) in Seattle, WA today?

Slack tide in Seattle, WA is approximately 2:08 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Seattle, WA?

Seattle, WA is currently in a spring phase. Tonight's moon is 1% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Seattle, WA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Seattle, WA?

Tide predictions for Seattle, WA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Seattle, WA?

Tide data for Seattle, WA is sourced from NOAA Station #9447130. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9447130.

What is the moon phase in Seattle, WA tonight?

Tonight the moon over Seattle, WA is New Moon (1% illuminated). This places Seattle, WA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA