Tides Today & Tomorrow in Union, WA

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently falling in Union, WA.
Next low tide : in 3h 46m at 12:52 am (8.0 ft)
Next high tide : 4:37 am (9.8 ft)
Sunset today : 9:12 pm
Sunrise tomorrow : 5:19 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9445478
Common Questions About Tides

Union, WA Tides - Jul 2005

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:3811.83:219.37:58-0.27:377.45:209:12Waning Crescent1Fri
2Sat1:1311.54:2510.48:44-1.18:458.25:209:12Waning Crescent2Sat
3Sun1:4911.25:1511.39:27-1.79:488.55:219:12Waning Crescent3Sun
4Mon2:2510.95:5711.910:09-2.110:468.55:229:11New Moon4Mon
5Tue3:0310.76:3512.310:50-2.311:378.45:229:11New Moon5Tue
6Wed3:4110.47:1112.511:28-2.35:239:10New Moon6Wed
7Thu4:2010.17:4712.612:248.212:06-2.15:249:10New Moon7Thu
8Fri4:589.78:2212.51:107.812:42-1.75:259:09Waxing Crescent8Fri
9Sat5:389.28:5512.41:567.41:17-1.15:269:09Waxing Crescent9Sat
10Sun6:218.79:2612.22:436.91:51-0.35:269:08Waxing Crescent10Sun
11Mon7:118.09:5312.03:306.32:250.85:279:08Waxing Crescent11Mon
12Tue8:147.410:1711.74:165.52:592.05:289:07First Quarter12Tue
13Wed9:406.910:3611.45:024.53:363.55:299:06First Quarter13Wed
14Thu11:387.010:5411.25:473.44:215.05:309:05First Quarter14Thu
15Fri1:257.76:322.25:246.55:319:05First Quarter15Fri
16Sat2:478.97:180.86:507.75:329:04Waxing Gibbous16Sat
17Sun3:5110.28:04-0.58:128.55:339:03Waxing Gibbous17Sun
18Mon12:3711.14:4411.48:51-1.89:248.85:349:02Waxing Gibbous18Mon
19Tue1:2911.15:3012.39:40-2.910:278.75:359:01Waxing Gibbous19Tue
20Wed2:2711.16:1313.010:28-3.711:228.35:369:00Full Moon20Wed
21Thu3:2711.16:5313.311:16-4.15:388:59Full Moon21Thu
22Fri4:2910.97:3313.412:137.712:03-3.95:398:58Full Moon22Fri
23Sat5:3310.58:1013.31:046.812:49-3.15:408:57Waning Gibbous23Sat
24Sun6:399.98:4613.11:555.71:35-1.85:418:56Waning Gibbous24Sun
25Mon7:529.29:2112.82:484.62:210.05:428:55Waning Gibbous25Mon
26Tue9:148.59:5412.43:413.43:082.15:438:53Third Quarter26Tue
27Wed10:438.210:2611.94:362.23:584.25:458:52Third Quarter27Wed
28Thu12:208.35:321.34:556.05:468:51Third Quarter28Thu
29Fri1:559.06:280.56:057.55:478:50Third Quarter29Fri
30Sat3:169.97:22-0.27:228.35:488:48Waning Crescent30Sat
31Sun12:1710.74:1610.78:14-0.68:368.65:508:47Waning Crescent31Sun
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 2:44 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 spring phase. Tonight's moon is 99% 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 Full Moon (99% 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