Tides Today & Tomorrow in Coupeville, Whidbey Island, WA

TIDE TIMES for Friday, August 7, 2026
The tide is currently rising in Coupeville, Whidbey Island, WA.
Next low tide : 6:34 am (-0.5 ft)
Next high tide (tomorrow) : in 13m at 11:07 pm (11.1 ft)
Sunset today : 8:39 pm
Sunrise tomorrow : 5:53 am
Moon phase : Third Quarter (42% illuminated)
Tide Station Location : Station #9447929
Common Questions About Tides

Coupeville, Whidbey Island, WA Tides - Sep 1961

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:369.410:5010.34:380.94:575.56:287:52Third Quarter1Fri
2Sat1:129.45:391.06:256.36:297:50Third Quarter2Sat
3Sun2:419.86:431.08:056.46:317:48Third Quarter3Sun
4Mon12:579.33:4510.37:460.99:196.16:327:46Waning Crescent4Mon
5Tue2:049.24:3110.78:430.810:105.76:347:44Waning Crescent5Tue
6Wed3:039.35:0610.89:330.710:485.26:357:42Waning Crescent6Wed
7Thu3:529.55:3210.910:150.611:174.86:367:40Waning Crescent7Thu
8Fri4:359.75:5410.910:520.711:424.36:387:38New Moon8Fri
9Sat5:139.96:1410.911:270.86:397:36New Moon9Sat
10Sun5:5110.06:3611.012:073.812:001.26:407:34New Moon10Sun
11Mon6:2910.17:0111.012:343.212:341.66:427:32New Moon11Mon
12Tue7:0810.17:2911.01:042.61:092.36:437:30Waxing Crescent12Tue
13Wed7:5110.17:5910.91:382.01:453.06:457:28Waxing Crescent13Wed
14Thu8:3710.08:3110.72:161.52:243.96:467:26Waxing Crescent14Thu
15Fri9:299.99:0710.42:581.13:084.96:477:23Waxing Crescent15Fri
16Sat10:309.79:4910.03:450.84:015.86:497:21First Quarter16Sat
17Sun11:429.610:429.74:390.75:096.56:507:19First Quarter17Sun
18Mon1:069.85:400.56:336.86:527:17First Quarter18Mon
19Tue2:2310.26:450.37:566.56:537:15Waxing Gibbous19Tue
20Wed1:049.53:2010.77:500.09:015.86:547:13Waxing Gibbous20Wed
21Thu2:169.94:0411.28:51-0.29:514.76:567:11Waxing Gibbous21Thu
22Fri3:2010.44:4211.69:46-0.310:363.66:577:09Waxing Gibbous22Fri
23Sat4:1910.95:1811.910:37-0.111:192.46:587:07Full Moon23Sat
24Sun4:1511.24:5312.110:250.411:011.46:006:05Full Moon24Sun
25Mon5:1011.45:2912.111:121.211:440.56:016:02Full Moon25Mon
26Tue6:0511.46:0611.811:592.26:036:00Waning Gibbous26Tue
27Wed7:0211.26:4511.412:280.012:473.46:045:58Waning Gibbous27Wed
28Thu8:0011.07:2610.81:13-0.21:394.56:055:56Waning Gibbous28Thu
29Fri9:0210.78:1110.12:00-0.12:395.56:075:54Third Quarter29Fri
30Sat10:1310.49:049.32:510.33:536.26:085:52Third Quarter30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9447929)

Common Questions About Coupeville, Whidbey Island, WA Tides

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What time does the tide turn (slack tide) in Coupeville, Whidbey Island, WA today?

Slack tide in Coupeville, Whidbey Island, WA is approximately 2:50 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 Coupeville, Whidbey Island, WA?

Coupeville, Whidbey Island, WA is currently in a neap phase. Tonight's moon is 42% 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 minimum.

What datum are Coupeville, Whidbey Island, 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 Coupeville, Whidbey Island, WA?

Tide predictions for Coupeville, Whidbey Island, 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 Coupeville, Whidbey Island, WA?

Tide data for Coupeville, Whidbey Island, WA is sourced from NOAA Station #9447929. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9447929.

What is the moon phase in Coupeville, Whidbey Island, WA tonight?

Tonight the moon over Coupeville, Whidbey Island, WA is Third Quarter (42% illuminated). This places Coupeville, Whidbey Island, WA in a neap tide cycle, so tidal ranges are near their weekly minimum 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