Tides Today & Tomorrow in Seattle, WA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Seattle, WA.
Next low tide : 1:59 pm (2.0 ft)
Next high tide : in 1h 53m at 8:00 am (9.5 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 6:07 am
Moon phase : Waxing Crescent (19% illuminated)
Tide Station Location : Station #9447130
Common Questions About Tides

Seattle, WA Tides - Oct 1935

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue7:1410.56:0510.112:22-0.212:466.26:075:50Waxing Crescent1Tue
2Wed8:0210.46:369.81:01-0.41:296.96:085:48Waxing Crescent2Wed
3Thu8:5910.37:119.51:45-0.42:227.56:105:46First Quarter3Thu
4Fri10:0610.18:019.12:36-0.23:327.86:115:44First Quarter4Fri
5Sat11:2410.19:198.73:340.15:057.76:135:42First Quarter5Sat
6Sun12:3310.44:400.36:307.06:145:40First Quarter6Sun
7Mon1:2110.75:470.67:265.96:155:38Waxing Gibbous7Mon
8Tue12:208.81:5811.16:510.88:094.36:175:36Waxing Gibbous8Tue
9Wed1:359.42:3011.57:501.28:492.76:185:34Waxing Gibbous9Wed
10Thu2:4110.23:0011.88:431.89:291.06:205:32Full Moon10Thu
11Fri3:4110.83:3212.09:332.710:09-0.66:215:30Full Moon11Fri
12Sat4:3911.44:0512.110:213.710:49-1.76:235:28Full Moon12Sat
13Sun5:3611.74:4011.911:104.811:31-2.36:245:27Waning Gibbous13Sun
14Mon6:3211.95:1811.512:015.76:255:25Waning Gibbous14Mon
15Tue7:2911.85:5910.912:15-2.412:556.66:275:23Waning Gibbous15Tue
16Wed8:2811.66:4610.11:01-2.01:587.16:285:21Waning Gibbous16Wed
17Thu9:3311.37:419.21:51-1.33:167.46:305:19Third Quarter17Thu
18Fri10:4311.08:508.42:45-0.34:567.16:315:17Third Quarter18Fri
19Sat11:5110.810:187.83:450.76:246.46:335:15Third Quarter19Sat
20Sun12:4710.84:511.67:225.46:345:13Third Quarter20Sun
21Mon1:2810.85:592.48:044.46:365:12Waning Crescent21Mon
22Tue1:148.11:5910.87:033.08:373.46:375:10Waning Crescent22Tue
23Wed2:198.62:2310.77:573.59:032.56:395:08Waning Crescent23Wed
24Thu3:129.22:4310.78:434.29:261.56:405:06Waning Crescent24Thu
25Fri3:579.83:0410.79:244.89:490.66:425:05New Moon25Fri
26Sat4:3710.33:2710.710:025.510:15-0.16:435:03New Moon26Sat
27Sun5:1510.73:5210.610:396.110:44-0.86:455:01New Moon27Sun
28Mon5:5211.14:1910.511:166.611:16-1.26:464:59New Moon28Mon
29Tue6:3011.34:4810.311:567.111:53-1.56:484:58Waxing Crescent29Tue
30Wed7:1211.45:2010.012:397.56:494:56Waxing Crescent30Wed
31Thu7:5811.45:579.712:33-1.51:277.76:514:55Waxing Crescent31Thu
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 10:59 am — 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 19% 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 Waxing Crescent (19% 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