Tides Today & Tomorrow in Union, WA

TIDE TIMES for Friday, July 10, 2026
The tide is currently rising in Union, WA.
Next low tide : 7:56 pm (8.5 ft)
Next high tide : in 7h 25m at 3:38 pm (10.3 ft)
Sunset today : 9:08 pm
Sunrise tomorrow : 5:26 am
Moon phase : Waning Crescent (18% illuminated)
Tide Station Location : Station #9445478
Common Questions About Tides

Union, WA Tides - Nov 2063

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu2:148.02:3911.67:473.79:063.57:565:55Waxing Gibbous1Thu
2Fri3:158.83:0511.68:384.49:382.27:575:53Waxing Gibbous2Fri
3Sat4:089.73:2911.59:265.010:101.17:595:52Waxing Gibbous3Sat
4Sun3:5610.62:5011.49:135.79:420.27:004:50Full Moon4Sun
5Mon4:4011.43:0811.39:586.410:15-0.67:024:49Full Moon5Mon
6Tue5:2412.03:2711.110:427.010:48-1.17:034:48Full Moon6Tue
7Wed6:0812.43:4811.011:277.611:22-1.57:054:46Full Moon7Wed
8Thu6:5512.64:1410.812:158.27:064:45Waning Gibbous8Thu
9Fri7:4612.64:4410.51:088.67:084:44Waning Gibbous9Fri
10Sat8:3812.65:2010.012:39-1.42:108.87:094:42Waning Gibbous10Sat
11Sun9:3212.56:069.31:25-1.03:208.57:114:41Third Quarter11Sun
12Mon10:2412.47:128.42:17-0.34:317.77:124:40Third Quarter12Mon
13Tue11:1112.49:047.63:160.65:336.47:144:39Third Quarter13Tue
14Wed11:5312.411:447.74:211.86:244.77:154:37Third Quarter14Wed
15Thu12:2912.45:303.07:092.87:174:36Waning Crescent15Thu
16Fri1:188.71:0312.46:364.37:511.07:184:35Waning Crescent16Fri
17Sat2:3110.01:3512.47:385.48:33-0.77:204:34Waning Crescent17Sat
18Sun3:3311.32:0612.38:386.49:14-2.07:214:33New Moon18Sun
19Mon4:2812.42:3812.29:347.39:56-2.87:234:32New Moon19Mon
20Tue5:1913.13:1011.910:287.910:37-3.17:244:31New Moon20Tue
21Wed6:0813.43:4311.611:208.311:18-2.97:254:30New Moon21Wed
22Thu6:5713.54:1511.112:138.57:274:29Waxing Crescent22Thu
23Fri7:4513.34:4810.412:00-2.41:088.67:284:29Waxing Crescent23Fri
24Sat8:3313.05:239.612:43-1.52:088.47:294:28Waxing Crescent24Sat
25Sun9:2112.76:038.81:27-0.53:138.07:314:27Waxing Crescent25Sun
26Mon10:0612.47:017.82:120.64:197.37:324:26First Quarter26Mon
27Tue10:4812.19:047.02:591.85:206.37:334:26First Quarter27Tue
28Wed11:2511.911:317.03:503.16:085.17:354:25First Quarter28Wed
29Thu11:5811.84:474.36:483.87:364:24First Quarter29Thu
30Fri1:007.712:2611.65:485.47:242.57:374:24Waxing Gibbous30Fri
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 5:47 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 18% 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 Waning Crescent (18% 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