Tides Today & Tomorrow in Union, WA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Union, WA.
Next low tide : in 1h 14m at 12:01 pm (-3.9 ft)
Next high tide : 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 - Jun 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:4112.12:398.38:212.47:464.45:199:00Waxing Gibbous1Tue
2Wed2:1811.93:449.29:041.28:435.35:189:01Waxing Gibbous2Wed
3Thu2:5211.74:3910.19:420.29:386.05:189:02Waxing Gibbous3Thu
4Fri3:2311.45:2710.910:19-0.610:306.65:179:03Full Moon4Fri
5Sat3:5111.26:1011.510:55-1.211:197.05:179:04Full Moon5Sat
6Sun4:1610.86:5112.011:30-1.55:169:05Full Moon6Sun
7Mon4:4010.57:3212.312:067.312:05-1.55:169:05Full Moon7Mon
8Tue5:0410.18:1412.412:537.512:39-1.45:169:06Waning Gibbous8Tue
9Wed5:319.78:5612.41:427.61:14-1.15:159:07Waning Gibbous9Wed
10Thu6:029.29:3812.32:347.61:50-0.75:159:07Waning Gibbous10Thu
11Fri6:388.710:1912.23:297.42:28-0.15:159:08Waning Gibbous11Fri
12Sat7:238.010:5912.04:267.13:070.65:159:09Waning Gibbous12Sat
13Sun8:247.311:3711.95:236.43:511.55:159:09Third Quarter13Sun
14Mon9:536.76:165.44:432.55:159:10Third Quarter14Mon
15Tue12:1211.812:156.77:024.25:443.65:149:10Third Quarter15Tue
16Wed12:4411.71:557.67:442.76:524.65:149:11Waning Crescent16Wed
17Thu1:1611.73:078.88:241.18:005.65:149:11Waning Crescent17Thu
18Fri1:4811.74:0810.29:06-0.59:056.45:159:11Waning Crescent18Fri
19Sat2:2311.75:0311.59:48-2.010:076.95:159:12Waning Crescent19Sat
20Sun3:0211.75:5512.510:32-3.211:067.35:159:12New Moon20Sun
21Mon3:4411.76:4513.211:17-4.05:159:12New Moon21Mon
22Tue4:2911.57:3413.612:027.512:03-4.25:159:12New Moon22Tue
23Wed5:1711.08:2313.712:587.412:50-3.95:169:13Waxing Crescent23Wed
24Thu6:0910.49:1113.51:567.21:38-3.15:169:13Waxing Crescent24Thu
25Fri7:079.59:5813.22:566.72:27-1.95:169:13Waxing Crescent25Fri
26Sat8:198.510:4312.93:585.93:18-0.45:179:13First Quarter26Sat
27Sun9:537.611:2612.55:005.04:101.35:179:13First Quarter27Sun
28Mon11:357.36:013.85:063.05:189:13First Quarter28Mon
29Tue12:0812.11:107.56:572.76:064.65:189:13First Quarter29Tue
30Wed12:4811.82:328.37:461.57:105.85:199:12Waxing Gibbous30Wed
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 3:46 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