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 7h 13m 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 - Nov 2093

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:1310.53:0412.48:493.49:330.56:574:54Full Moon1Sun
2Mon4:0711.33:3612.29:394.210:12-0.46:584:52Full Moon2Mon
3Tue4:5811.94:0611.910:275.010:49-0.97:004:51Full Moon3Tue
4Wed5:4612.34:3311.511:145.811:27-1.07:014:49Full Moon4Wed
5Thu6:3312.44:5610.912:006.57:034:48Waning Gibbous5Thu
6Fri7:2212.45:1810.412:04-0.812:507.17:044:47Waning Gibbous6Fri
7Sat8:1112.25:419.812:42-0.41:447.57:064:45Waning Gibbous7Sat
8Sun9:0312.06:099.21:220.22:457.87:074:44Waning Gibbous8Sun
9Mon9:5711.86:468.52:060.93:527.77:094:43Third Quarter9Mon
10Tue10:5111.77:437.82:551.65:027.27:104:41Third Quarter10Tue
11Wed11:4111.79:387.23:502.36:036.47:124:40Third Quarter11Wed
12Thu12:2411.84:513.06:515.47:134:39Third Quarter12Thu
13Fri12:087.41:0111.85:523.57:314.37:154:38Waning Crescent13Fri
14Sat1:228.11:3411.96:493.98:073.07:164:37Waning Crescent14Sat
15Sun2:209.02:0311.97:424.48:421.87:184:35Waning Crescent15Sun
16Mon3:1210.02:2911.98:334.99:170.57:194:34Waning Crescent16Mon
17Tue4:0111.02:5411.99:235.49:52-0.67:214:33New Moon17Tue
18Wed4:4711.93:2111.810:116.010:28-1.57:224:32New Moon18Wed
19Thu5:3412.63:4911.710:596.611:06-2.17:244:31New Moon19Thu
20Fri6:2313.14:2111.411:497.111:47-2.47:254:30Waxing Crescent20Fri
21Sat7:1413.34:5711.012:437.67:264:30Waxing Crescent21Sat
22Sun8:0713.35:3810.412:31-2.31:437.87:284:29Waxing Crescent22Sun
23Mon9:0213.26:289.61:20-1.72:497.67:294:28Waxing Crescent23Mon
24Tue9:5713.07:368.62:13-0.83:597.07:304:27First Quarter24Tue
25Wed10:5112.99:337.83:110.45:096.07:324:26First Quarter25Wed
26Thu11:4012.811:407.94:151.76:104.67:334:26First Quarter26Thu
27Fri12:2512.75:222.97:023.17:344:25Waxing Gibbous27Fri
28Sat1:098.61:0612.66:284.07:481.67:364:25Waxing Gibbous28Sat
29Sun2:209.61:4312.57:295.08:300.47:374:24Waxing Gibbous29Sun
30Mon3:2010.62:1812.38:265.89:10-0.67:384:24Waxing Gibbous30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9445478)

Common Questions About Union, WA Tides

Show All
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