Tides Today & Tomorrow in Union, WA

TIDE TIMES for Saturday, August 8, 2026
The tide is currently rising in Union, WA.
Next low tide : 7:56 pm (8.9 ft)
Next high tide : in 1h 50m at 3:29 pm (10.8 ft)
Sunset today : 8:35 pm
Sunrise tomorrow : 6:00 am
Moon phase : Waning Crescent (21% illuminated)
Tide Station Location : Station #9445478
Common Questions About Tides

Union, WA Tides - Nov 2098

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:0411.75:011.87:247.17:575:54First Quarter1Sat
2Sun12:4511.75:032.47:076.06:584:53First Quarter2Sun
3Mon12:047.41:1911.76:023.07:424.77:004:51Waxing Gibbous3Mon
4Tue1:218.01:4811.86:563.68:153.57:014:50Waxing Gibbous4Tue
5Wed2:218.82:1311.77:464.28:472.27:034:48Waxing Gibbous5Wed
6Thu3:149.82:3511.78:344.99:181.07:044:47Waxing Gibbous6Thu
7Fri4:0110.72:5511.69:205.69:50-0.17:064:45Full Moon7Fri
8Sat4:4711.53:1311.410:066.310:23-0.97:074:44Full Moon8Sat
9Sun5:3212.23:3311.310:517.110:56-1.57:094:43Full Moon9Sun
10Mon6:1912.63:5711.211:387.811:32-1.97:104:42Waning Gibbous10Mon
11Tue7:0912.84:2510.912:288.47:124:40Waning Gibbous11Tue
12Wed8:0312.84:5810.612:12-2.01:258.87:134:39Waning Gibbous12Wed
13Thu8:5912.85:3710.012:57-1.72:328.97:154:38Waning Gibbous13Thu
14Fri9:5512.76:289.21:47-1.23:468.57:164:37Third Quarter14Fri
15Sat10:4912.67:478.22:44-0.34:597.57:174:36Third Quarter15Sat
16Sun11:3612.610:177.53:470.76:006.07:194:35Third Quarter16Sun
17Mon12:1712.54:542.06:494.27:204:34Waning Crescent17Mon
18Tue12:278.012:5312.56:013.27:332.37:224:33Waning Crescent18Tue
19Wed1:509.11:2612.57:054.58:140.67:234:32Waning Crescent19Wed
20Thu2:5810.31:5812.48:045.68:54-0.97:254:31Waning Crescent20Thu
21Fri3:5611.52:2812.39:016.69:34-1.97:264:30New Moon21Fri
22Sat4:4812.42:5712.09:557.410:13-2.57:274:29New Moon22Sat
23Sun5:3713.03:2511.710:477.910:52-2.67:294:28New Moon23Sun
24Mon6:2513.23:5311.211:378.311:31-2.37:304:27New Moon24Mon
25Tue7:1213.24:2110.712:298.67:314:27Waxing Crescent25Tue
26Wed7:5913.14:4910.112:11-1.81:258.77:334:26Waxing Crescent26Wed
27Thu8:4712.85:219.412:52-1.02:268.57:344:25Waxing Crescent27Thu
28Fri9:3412.56:008.61:34-0.13:328.17:354:25Waxing Crescent28Fri
29Sat10:1912.36:577.72:180.94:387.47:374:24First Quarter29Sat
30Sun11:0012.18:476.93:062.05:366.47:384:24First Quarter30Sun
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 5:42 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 transitional phase. Tonight's moon is 21% 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 shifting between spring and neap.

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 (21% illuminated). This places Union, WA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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