Tides Today & Tomorrow in Seattle, WA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently rising in Seattle, WA.
Next low tide : 11:07 am (-2.5 ft)
Next high tide : in 4h 30m at 4:09 am (10.8 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 - Jun 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:1111.18:3112.41:086.21:10-3.35:158:58Waning Gibbous1Mon
2Tue7:0510.59:2312.42:076.21:59-2.75:148:59Waning Gibbous2Tue
3Wed8:049.710:1612.23:126.02:51-1.75:149:00Waning Gibbous3Wed
4Thu9:118.811:0912.04:235.63:45-0.55:139:01Third Quarter4Thu
5Fri10:288.15:384.94:431.05:139:02Third Quarter5Fri
6Sat12:0111.811:59 AM7.66:493.95:462.45:129:02Third Quarter6Sat
7Sun12:5111.61:367.77:492.86:543.75:129:03Third Quarter7Sun
8Mon1:3711.43:038.38:391.78:044.75:129:04Waning Crescent8Mon
9Tue2:1711.24:119.19:200.89:105.45:119:05Waning Crescent9Tue
10Wed2:5310.95:069.89:560.010:075.95:119:05Waning Crescent10Wed
11Thu3:2610.75:5010.410:27-0.510:566.35:119:06Waning Crescent11Thu
12Fri3:5810.46:2810.810:58-1.011:406.65:119:06New Moon12Fri
13Sat4:3010.27:0111.011:29-1.25:109:07New Moon13Sat
14Sun5:0310.07:3111.212:196.812:01-1.45:109:08New Moon14Sun
15Mon5:399.78:0111.412:576.812:35-1.45:109:08New Moon15Mon
16Tue6:179.48:3311.51:366.81:11-1.25:109:08Waxing Crescent16Tue
17Wed6:589.19:0711.62:176.61:50-0.95:109:09Waxing Crescent17Wed
18Thu7:438.79:4411.63:026.32:30-0.45:109:09Waxing Crescent18Thu
19Fri8:358.210:2311.63:515.93:120.35:109:10Waxing Crescent19Fri
20Sat9:367.811:0411.64:435.33:581.25:119:10First Quarter20Sat
21Sun10:487.511:4611.55:384.54:492.35:119:10First Quarter21Sun
22Mon12:107.56:323.45:473.55:119:10First Quarter22Mon
23Tue12:2811.51:368.07:242.16:524.65:119:11Waxing Gibbous23Tue
24Wed1:1211.62:558.88:130.68:015.55:129:11Waxing Gibbous24Wed
25Thu1:5511.74:029.89:00-0.89:076.15:129:11Waxing Gibbous25Thu
26Fri2:4011.85:0010.79:46-2.010:096.45:129:11Waxing Gibbous26Fri
27Sat3:2511.85:5211.510:32-3.011:066.55:139:11Full Moon27Sat
28Sun4:1311.76:4112.011:19-3.55:139:11Full Moon28Sun
29Mon5:0311.57:2812.312:026.412:06-3.65:149:11Full Moon29Mon
30Tue5:5711.08:1412.512:576.212:53-3.25:149:10Waning Gibbous30Tue
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 7:38 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 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