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 1h 29m 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 - Jun 2094

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:3010.58:5113.11:287.61:10-2.85:199:01Waning Gibbous1Tue
2Wed6:1110.19:4113.12:257.71:55-2.45:189:02Waning Gibbous2Wed
3Thu6:599.410:3112.93:277.52:44-1.75:189:03Waning Gibbous3Thu
4Fri8:008.511:2012.84:316.93:38-0.65:179:04Third Quarter4Fri
5Sat9:317.65:365.94:360.75:179:05Third Quarter5Sat
6Sun12:0612.611:44 AM7.26:374.55:402.25:169:05Third Quarter6Sun
7Mon12:5012.41:297.77:312.96:463.65:169:06Waning Crescent7Mon
8Tue1:3012.32:508.78:191.37:514.85:169:07Waning Crescent8Tue
9Wed2:0812.13:579.89:04-0.18:535.85:159:08Waning Crescent9Wed
10Thu2:4411.94:5510.99:46-1.39:526.65:159:08Waning Crescent10Thu
11Fri3:1811.75:4511.710:28-2.110:487.15:159:09New Moon11Fri
12Sat3:5211.46:3212.311:07-2.511:417.45:159:09New Moon12Sat
13Sun4:2411.07:1612.611:46-2.55:159:10New Moon13Sun
14Mon4:5410.57:5912.712:317.612:25-2.35:159:10New Moon14Mon
15Tue5:2510.08:4112.71:227.71:03-1.85:159:11Waxing Crescent15Tue
16Wed5:579.59:2312.52:147.61:41-1.25:159:11Waxing Crescent16Wed
17Thu6:328.810:0412.33:087.42:20-0.45:159:12Waxing Crescent17Thu
18Fri7:168.110:4412.04:047.03:000.55:159:12Waxing Crescent18Fri
19Sat8:147.411:2211.85:006.33:421.65:159:12First Quarter19Sat
20Sun9:436.711:5811.65:555.54:282.75:159:12First Quarter20Sun
21Mon12:036.66:444.45:223.95:169:13First Quarter21Mon
22Tue12:3011.41:397.27:283.26:255.05:169:13First Quarter22Tue
23Wed12:5911.32:518.28:081.97:305.95:169:13Waxing Gibbous23Wed
24Thu1:2711.23:519.48:460.68:346.65:179:13Waxing Gibbous24Thu
25Fri1:5611.24:4310.59:25-0.69:357.25:179:13Waxing Gibbous25Fri
26Sat2:2811.25:3011.610:05-1.810:337.55:179:13Full Moon26Sat
27Sun3:0511.16:1512.410:45-2.711:277.75:189:13Full Moon27Sun
28Mon3:4611.17:0013.011:27-3.45:189:13Full Moon28Mon
29Tue4:3010.97:4513.312:207.712:10-3.65:199:13Full Moon29Tue
30Wed5:1810.68:3013.41:127.512:55-3.45:209:12Waning 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 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