Tides Today & Tomorrow in Union, WA

TIDE TIMES for Thursday, August 6, 2026
The tide is currently falling in Union, WA.
Next low tide : in 1h 18m at 4:50 pm (7.5 ft)
Next high tide : 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 - Nov 2094

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:4011.86:002.37:566.17:575:54Third Quarter1Mon
2Tue12:597.62:1911.87:012.88:375.07:585:53Waning Crescent2Tue
3Wed2:148.12:5311.87:563.39:133.98:005:51Waning Crescent3Wed
4Thu3:138.83:2311.88:463.79:472.88:015:50Waning Crescent4Thu
5Fri4:049.63:5011.89:344.210:211.78:035:48Waning Crescent5Fri
6Sat4:5110.44:1511.710:194.710:530.88:045:47New Moon6Sat
7Sun4:3511.13:3611.510:025.310:260.07:064:46New Moon7Sun
8Mon5:1911.73:5511.310:465.910:58-0.67:074:44New Moon8Mon
9Tue6:0312.14:1511.111:296.611:32-0.97:094:43New Moon9Tue
10Wed6:4912.34:3910.812:167.27:104:42Waxing Crescent10Wed
11Thu7:3912.55:0710.512:08-1.11:087.87:124:40Waxing Crescent11Thu
12Fri8:3212.55:4210.012:47-1.02:088.17:134:39Waxing Crescent12Fri
13Sat9:2812.46:259.41:32-0.73:168.17:154:38First Quarter13Sat
14Sun10:2512.47:268.62:24-0.24:297.67:164:37First Quarter14Sun
15Mon11:1912.49:037.83:240.65:366.67:174:36First Quarter15Mon
16Tue12:0612.54:321.56:315.27:194:35First Quarter16Tue
17Wed12:4812.65:412.47:183.57:204:34Waxing Gibbous17Wed
18Thu1:128.61:2612.66:463.38:021.87:224:33Waxing Gibbous18Thu
19Fri2:249.82:0112.67:474.28:440.27:234:32Waxing Gibbous19Fri
20Sat3:2611.02:3512.58:455.19:25-1.17:254:31Full Moon20Sat
21Sun4:2112.03:0812.39:395.910:06-2.07:264:30Full Moon21Sun
22Mon5:1312.73:4012.010:316.610:47-2.57:274:29Full Moon22Mon
23Tue6:0313.24:1011.611:237.211:27-2.47:294:28Full Moon23Tue
24Wed6:5213.34:4011.012:157.77:304:27Waning Gibbous24Wed
25Thu7:4213.25:0910.412:08-1.91:108.07:314:27Waning Gibbous25Thu
26Fri8:3113.05:409.612:50-1.22:098.07:334:26Waning Gibbous26Fri
27Sat9:2112.76:168.81:33-0.33:137.87:344:25Waning Gibbous27Sat
28Sun10:1012.47:077.92:180.74:217.37:354:25Third Quarter28Sun
29Mon10:5812.28:477.13:081.85:256.57:374:24Third Quarter29Mon
30Tue11:4012.111:287.14:022.86:175.57:384:24Third Quarter30Tue
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 7:29 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