Tides Today & Tomorrow in Seattle, WA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Seattle, WA.
Next low tide : in 3h 58m at 1:59 pm (2.0 ft)
Next high tide : 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 1935

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:1610.96:1511.910:29-3.011:277.44:157:58New Moon1Sat
2Sun3:5810.56:5612.011:09-2.84:157:59New Moon2Sun
3Mon4:4210.07:3511.912:187.411:50 AM-2.44:148:00Waxing Crescent3Mon
4Tue5:299.58:1211.71:097.212:31-1.84:138:00Waxing Crescent4Tue
5Wed6:198.98:4811.52:016.91:13-1.04:138:01Waxing Crescent5Wed
6Thu7:148.39:2311.32:566.51:560.04:138:02Waxing Crescent6Thu
7Fri8:167.79:5911.23:535.82:401.24:128:03First Quarter7Fri
8Sat9:287.110:3511.04:495.03:262.54:128:04First Quarter8Sat
9Sun10:546.911:1110.95:404.04:173.94:118:04First Quarter9Sun
10Mon12:297.26:233.05:155.24:118:05First Quarter10Mon
11Tue2:007.97:021.86:226.34:118:06Waxing Gibbous11Tue
12Wed12:2110.63:098.97:380.77:317.14:118:06Waxing Gibbous12Wed
13Thu12:5610.54:019.88:14-0.48:357.64:108:07Waxing Gibbous13Thu
14Fri1:3210.54:4310.58:50-1.49:297.94:108:07Waxing Gibbous14Fri
15Sat2:0910.55:2211.19:29-2.210:178.04:108:08Full Moon15Sat
16Sun2:4810.65:5911.610:10-2.911:028.04:108:08Full Moon16Sun
17Mon3:3210.66:3611.910:52-3.311:487.74:108:09Full Moon17Mon
18Tue4:2010.57:1312.111:37-3.34:108:09Waning Gibbous18Tue
19Wed5:1310.37:5112.212:367.312:22-2.94:108:09Waning Gibbous19Wed
20Thu6:139.88:2912.31:296.61:09-2.14:108:10Waning Gibbous20Thu
21Fri7:189.19:0712.32:275.61:57-0.94:118:10Waning Gibbous21Fri
22Sat8:338.49:4612.33:274.52:470.84:118:10Third Quarter22Sat
23Sun10:007.810:2712.24:283.13:402.74:118:10Third Quarter23Sun
24Mon11:427.811:0911.95:281.74:424.64:118:11Third Quarter24Mon
25Tue1:298.56:250.35:566.24:128:11Waning Crescent25Tue
26Wed2:569.67:17-0.87:207.24:128:11Waning Crescent26Wed
27Thu12:3911.34:0010.68:05-1.78:397.74:138:11Waning Crescent27Thu
28Fri1:2611.04:5111.38:49-2.29:457.84:138:11Waning Crescent28Fri
29Sat2:1310.75:3211.79:32-2.410:397.64:148:11New Moon29Sat
30Sun2:5910.46:0911.810:12-2.411:257.44:148:10New Moon30Sun
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 5:12 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