Tides Today & Tomorrow in Union, WA

TIDE TIMES for Thursday, August 6, 2026
The tide is currently rising in Union, WA.
Next low tide : 4:50 pm (7.5 ft)
Next high tide : in 5h 48m at 12:52 pm (8.8 ft)
Sunset today : 8:38 pm
Sunrise tomorrow : 5:57 am
Moon phase : Third Quarter (42% illuminated)
Tide Station Location : Station #9445478
Common Questions About Tides

Union, WA Tides - Jan 2094

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:3412.73:1511.110:448.210:42-1.67:594:33Full Moon1Fri
2Sat6:1213.03:4810.711:308.111:18-1.47:594:34Full Moon2Sat
3Sun6:4913.04:2010.312:157.97:594:35Waning Gibbous3Sun
4Mon7:2613.04:549.91:027.77:584:36Waning Gibbous4Mon
5Tue8:0312.85:339.312:28-0.41:517.47:584:37Waning Gibbous5Tue
6Wed8:3712.66:188.61:030.42:416.97:584:38Waning Gibbous6Wed
7Thu9:1012.47:168.01:381.43:326.37:584:39Waning Gibbous7Thu
8Fri9:4012.18:397.42:152.64:235.47:574:40Third Quarter8Fri
9Sat10:0711.810:527.42:573.85:124.37:574:42Third Quarter9Sat
10Sun10:3411.73:505.25:593.17:564:43Third Quarter10Sun
11Mon12:378.111:04 AM11.65:026.46:441.77:564:44Waning Crescent11Mon
12Tue1:539.311:42 AM11.56:227.47:280.37:554:45Waning Crescent12Tue
13Wed2:5310.612:2511.67:358.08:13-1.17:554:47Waning Crescent13Wed
14Thu3:4511.81:1311.78:408.38:59-2.27:544:48Waning Crescent14Thu
15Fri4:3112.92:0411.89:398.39:45-3.17:544:49New Moon15Fri
16Sat5:1513.62:5811.710:338.010:31-3.57:534:51New Moon16Sat
17Sun5:5814.03:5311.611:247.611:16-3.47:524:52New Moon17Sun
18Mon6:4014.14:5011.212:156.97:514:54Waxing Crescent18Mon
19Tue7:2114.05:5010.512:02-2.61:076.27:504:55Waxing Crescent19Tue
20Wed8:0213.86:599.712:49-1.42:025.37:504:56Waxing Crescent20Wed
21Thu8:4113.48:198.91:360.32:594.37:494:58First Quarter21Thu
22Fri9:2012.99:518.52:252.13:573.47:484:59First Quarter22Fri
23Sat9:5912.511:288.53:174.14:552.47:475:01First Quarter23Sat
24Sun10:4012.04:185.85:531.57:465:02First Quarter24Sun
25Mon1:009.211:24 AM11.65:287.26:460.87:455:04Waxing Gibbous25Mon
26Tue2:1710.112:1111.36:418.07:360.17:445:05Waxing Gibbous26Tue
27Wed3:1610.912:5911.17:498.38:22-0.47:425:07Waxing Gibbous27Wed
28Thu4:0011.71:4610.98:508.39:04-0.77:415:08Waxing Gibbous28Thu
29Fri4:3712.22:3010.89:428.19:44-0.97:405:10Full Moon29Fri
30Sat5:1212.53:1210.710:277.710:22-1.07:395:11Full Moon30Sat
31Sun5:4512.73:5210.511:097.310:59-0.87:385:13Full Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9445478)

Common Questions About Union, WA Tides

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What time does the tide turn (slack tide) in Union, WA today?

Slack tide in Union, WA is approximately 2:51 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 Union, WA?

Union, 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 Union, 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 Union, WA?

Tide predictions for Union, 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 Union, WA?

Tide data for Union, WA is sourced from NOAA Station #9445478. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9445478.

What is the moon phase in Union, WA tonight?

Tonight the moon over Union, WA is Third Quarter (42% illuminated). This places Union, 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