Tides Today & Tomorrow in Union, WA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently rising in Union, WA.
Next low tide (tomorrow) : 1:01 am (6.8 ft)
Next high tide : in 7h 01m at 7:31 pm (13.4 ft)
Sunset today : 9:05 pm
Sunrise tomorrow : 5:31 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9445478
Common Questions About Tides

Union, WA Tides - Jan 2067

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:0913.03:5610.411:337.711:17-1.07:594:32Full Moon1Sat
2Sun6:4213.04:3310.012:177.37:594:33Waning Gibbous2Sun
3Mon7:1412.95:129.51:006.87:594:34Waning Gibbous3Mon
4Tue7:4512.85:569.012:240.31:456.37:594:35Waning Gibbous4Tue
5Wed8:1212.56:498.412:561.32:305.77:584:36Waning Gibbous5Wed
6Thu8:3612.37:587.91:282.53:164.97:584:38Third Quarter6Thu
7Fri8:5612.09:377.72:033.84:044.07:584:39Third Quarter7Fri
8Sat9:1811.811:348.02:445.24:543.07:574:40Third Quarter8Sat
9Sun9:4711.73:416.65:451.77:574:41Third Quarter9Sun
10Mon1:059.010:26 AM11.65:067.86:350.57:574:42Waning Crescent10Mon
11Tue2:1410.211:16 AM11.66:358.57:26-0.87:564:44Waning Crescent11Tue
12Wed3:0911.412:1511.67:508.78:15-2.07:564:45Waning Crescent12Wed
13Thu3:5512.41:1811.78:548.59:04-2.87:554:46Waning Crescent13Thu
14Fri4:3713.22:2111.79:508.09:52-3.27:554:47New Moon14Fri
15Sat5:1713.73:2311.610:427.310:39-3.17:544:49New Moon15Sat
16Sun5:5514.04:2511.411:316.311:24-2.47:534:50New Moon16Sun
17Mon6:3314.05:2610.912:215.37:524:52Waxing Crescent17Mon
18Tue7:1013.86:3110.312:09-1.21:124.47:524:53Waxing Crescent18Tue
19Wed7:4613.57:429.612:530.42:043.57:514:54Waxing Crescent19Wed
20Thu8:2113.19:019.01:382.32:582.77:504:56First Quarter20Thu
21Fri8:5612.710:288.82:264.23:542.07:494:57First Quarter21Fri
22Sat9:3212.23:185.94:521.57:484:59First Quarter22Sat
23Sun12:029.010:11 AM11.74:227.45:501.07:475:00First Quarter23Sun
24Mon1:319.710:59 AM11.25:378.36:450.67:465:02Waxing Gibbous24Mon
25Tue2:3910.511:56 AM10.96:538.77:360.27:455:03Waxing Gibbous25Tue
26Wed3:2611.212:5510.78:008.68:22-0.27:445:05Waxing Gibbous26Wed
27Thu4:0311.71:4910.68:578.29:05-0.57:435:06Waxing Gibbous27Thu
28Fri4:3512.22:3810.69:457.79:44-0.67:425:08Full Moon28Fri
29Sat5:0512.53:2310.510:287.110:21-0.57:415:09Full Moon29Sat
30Sun5:3412.74:0610.411:086.510:56-0.27:395:11Full Moon30Sun
31Mon6:0312.74:4610.211:465.911:300.47:385:12Full Moon31Mon
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 10:16 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 spring phase. Tonight's moon is 3% 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 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 New Moon (3% illuminated). This places Union, 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