Tides Today & Tomorrow in Seattle, WA

TIDE TIMES for Saturday, July 18, 2026
The tide is currently falling in Seattle, WA.
Next low tide : in 4h 59m at 2:52 am (4.6 ft)
Next high tide : 8:02 am (9.2 ft)
Sunset today : 9:01 pm
Sunrise tomorrow : 5:29 am
Moon phase : Waxing Crescent (15% illuminated)
Tide Station Location : Station #9447130
Common Questions About Tides

Seattle, WA Tides - May 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun4:1911.85:3810.811:00-0.411:133.85:508:22Full Moon1Sun
2Mon4:5611.76:2911.211:39-1.25:488:24Full Moon2Mon
3Tue5:3211.47:1911.512:034.512:18-1.65:468:25Full Moon3Tue
4Wed6:1010.98:0711.512:525.212:57-1.75:458:26Waning Gibbous4Wed
5Thu6:5110.48:5511.51:435.71:38-1.55:438:28Waning Gibbous5Thu
6Fri7:349.79:4311.32:376.12:20-0.95:428:29Waning Gibbous6Fri
7Sat8:229.010:3411.13:386.43:05-0.25:408:30Waning Gibbous7Sat
8Sun9:178.311:2710.84:496.33:540.65:398:32Third Quarter8Sun
9Mon10:237.76:096.04:471.65:388:33Third Quarter9Mon
10Tue12:2110.711:41 AM7.37:205.45:462.45:368:34Third Quarter10Tue
11Wed1:1110.61:057.38:124.66:493.15:358:36Third Quarter11Wed
12Thu1:5310.62:217.78:513.77:503.75:348:37Waning Crescent12Thu
13Fri2:2910.63:238.39:222.78:464.25:328:38Waning Crescent13Fri
14Sat3:0010.74:139.09:491.89:354.65:318:40Waning Crescent14Sat
15Sun3:3010.74:589.610:170.810:205.05:308:41Waning Crescent15Sun
16Mon3:5910.85:3910.310:48-0.211:025.45:298:42New Moon16Mon
17Tue4:3010.86:1910.811:21-1.011:455.85:278:43New Moon17Tue
18Wed5:0210.87:0111.311:57-1.75:268:45New Moon18Wed
19Thu5:3810.77:4511.612:296.112:36-2.25:258:46Waxing Crescent19Thu
20Fri6:1810.48:3111.81:166.31:19-2.35:248:47Waxing Crescent20Fri
21Sat7:0310.19:2011.92:076.52:05-2.15:238:48Waxing Crescent21Sat
22Sun7:569.610:1111.83:056.42:54-1.65:228:49Waxing Crescent22Sun
23Mon8:589.011:0411.84:096.13:48-0.75:218:50First Quarter23Mon
24Tue10:138.311:5811.85:215.54:460.45:208:52First Quarter24Tue
25Wed11:417.96:334.55:501.65:198:53First Quarter25Wed
26Thu12:5011.81:168.07:373.26:572.75:198:54Waxing Gibbous26Thu
27Fri1:3811.82:438.68:311.88:053.75:188:55Waxing Gibbous27Fri
28Sat2:2211.83:579.49:170.59:104.55:178:56Waxing Gibbous28Sat
29Sun3:0311.74:5810.29:59-0.710:095.25:168:57Waxing Gibbous29Sun
30Mon3:4211.65:5110.910:39-1.511:045.75:168:58Full Moon30Mon
31Tue4:1911.36:3811.311:17-2.011:556.05:158:59Full Moon31Tue
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 5:27 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 15% 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 (15% 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