Tides Today & Tomorrow in Seattle, WA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Seattle, WA.
Next low tide (tomorrow) : 2:55 am (1.9 ft)
Next high tide : in 24m at 8:25 pm (11.6 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 - Jun 1934

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:0010.18:5012.21:287.51:12-2.94:157:58Waning Gibbous1Fri
2Sat7:069.49:3712.12:346.82:04-1.84:147:59Third Quarter2Sat
3Sun8:218.510:2212.03:455.92:58-0.34:148:00Third Quarter3Sun
4Mon9:497.811:0611.94:564.63:551.44:138:01Third Quarter4Mon
5Tue11:317.511:4711.85:593.14:583.24:138:01Third Quarter5Tue
6Wed1:158.06:531.66:074.84:128:02Waning Crescent6Wed
7Thu12:2611.62:439.07:400.37:206.14:128:03Waning Crescent7Thu
8Fri1:0311.33:5110.08:21-0.88:326.94:128:04Waning Crescent8Fri
9Sat1:4011.04:4510.88:58-1.69:367.44:118:04Waning Crescent9Sat
10Sun2:1510.65:2911.49:33-2.010:317.74:118:05New Moon10Sun
11Mon2:5210.36:0811.610:08-2.211:197.74:118:06New Moon11Mon
12Tue3:2910.06:4111.710:44-2.24:118:06New Moon12Tue
13Wed4:099.77:1211.612:017.711:20 AM-2.04:108:07New Moon13Wed
14Thu4:519.47:4111.512:417.511:58 AM-1.74:108:08Waxing Crescent14Thu
15Fri5:359.08:1011.51:217.212:36-1.24:108:08Waxing Crescent15Fri
16Sat6:238.68:4111.52:036.81:15-0.64:108:08Waxing Crescent16Sat
17Sun7:158.19:1311.42:486.31:540.34:108:09Waxing Crescent17Sun
18Mon8:157.69:4611.43:365.62:351.44:108:09First Quarter18Mon
19Tue9:257.210:1911.34:254.63:172.74:108:10First Quarter19Tue
20Wed10:487.010:5311.25:133.54:054.14:118:10First Quarter20Wed
21Thu12:227.45:582.35:035.64:118:10First Quarter21Thu
22Fri1:548.36:420.96:136.84:118:10Waxing Gibbous22Fri
23Sat12:0511.03:089.47:26-0.57:287.74:118:10Waxing Gibbous23Sat
24Sun12:4511.04:0410.48:11-1.88:378.24:118:11Waxing Gibbous24Sun
25Mon1:2811.14:5211.28:57-2.89:378.34:128:11Full Moon25Mon
26Tue2:1511.25:3511.89:43-3.610:318.14:128:11Full Moon26Tue
27Wed3:0611.26:1712.110:31-4.011:247.84:138:11Full Moon27Wed
28Thu4:0111.16:5712.311:19-3.94:138:11Waning Gibbous28Thu
29Fri5:0010.77:3712.412:177.112:07-3.44:148:11Waning Gibbous29Fri
30Sat6:0210.18:1512.51:136.312:55-2.44:148:10Waning Gibbous30Sat
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 11:40 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 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