Tides Today & Tomorrow in Union, WA

TIDE TIMES for Thursday, August 6, 2026
The tide is currently rising in Union, WA.
Next low tide (tomorrow) : 6:24 am (-0.3 ft)
Next high tide : in 1h 08m at 10:08 pm (11.2 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 - May 2095

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:1912.33:5310.09:432.09:362.85:548:24Waning Crescent1Sun
2Mon3:5212.34:5411.110:240.310:303.75:538:25New Moon2Mon
3Tue4:2412.35:5112.011:05-1.111:234.75:518:27New Moon3Tue
4Wed4:5512.16:4612.711:47-2.15:498:28New Moon4Wed
5Thu5:2611.87:4112.912:145.712:29-2.65:488:29Waxing Crescent5Thu
6Fri5:5711.48:3712.91:066.61:13-2.65:468:31Waxing Crescent6Fri
7Sat6:2810.89:3312.72:017.31:58-2.15:458:32Waxing Crescent7Sat
8Sun7:0010.010:3112.43:027.72:46-1.25:448:33Waxing Crescent8Sun
9Mon7:369.211:2912.14:087.83:37-0.25:428:35First Quarter9Mon
10Tue8:238.35:217.54:320.85:418:36First Quarter10Tue
11Wed12:2511.99:56 AM7.46:356.85:311.85:398:37First Quarter11Wed
12Thu1:1311.712:297.17:355.86:312.65:388:39First Quarter12Thu
13Fri1:5411.61:557.58:204.77:293.45:378:40Waxing Gibbous13Fri
14Sat2:2911.63:028.38:573.58:234.05:368:41Waxing Gibbous14Sat
15Sun3:0011.53:589.19:322.49:144.75:348:42Waxing Gibbous15Sun
16Mon3:2711.44:4710.010:061.310:025.35:338:44Waxing Gibbous16Mon
17Tue3:5211.25:3210.810:390.310:495.85:328:45Full Moon17Tue
18Wed4:1311.06:1611.411:12-0.511:356.45:318:46Full Moon18Wed
19Thu4:3210.86:5911.911:45-1.05:308:47Full Moon19Thu
20Fri4:5210.67:4412.212:216.912:18-1.45:298:48Full Moon20Fri
21Sat5:1610.38:3012.41:087.412:53-1.65:288:50Waning Gibbous21Sat
22Sun5:4410.09:1912.51:597.81:30-1.55:278:51Waning Gibbous22Sun
23Mon6:179.610:0912.42:568.02:11-1.35:268:52Waning Gibbous23Mon
24Tue6:589.110:5912.43:588.02:57-0.85:258:53Waning Gibbous24Tue
25Wed7:538.311:4712.35:047.53:49-0.15:248:54Third Quarter25Wed
26Thu9:147.56:076.54:490.95:238:55Third Quarter26Thu
27Fri12:3112.311:28 AM7.17:025.15:552.05:228:56Third Quarter27Fri
28Sat1:1212.21:327.77:493.57:033.15:228:57Waning Crescent28Sat
29Sun1:4812.22:548.88:331.68:084.25:218:58Waning Crescent29Sun
30Mon2:2312.24:0210.19:16-0.19:105.35:208:59Waning Crescent30Mon
31Tue2:5712.15:0211.39:59-1.610:106.25:199:00New Moon31Tue
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 2:16 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 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