Tides Today & Tomorrow in Union, WA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Union, WA.
Next low tide : in 2h 24m at 12:01 pm (-3.9 ft)
Next high tide : 7:31 pm (13.4 ft)
Sunset today : 9:05 pm
Sunrise tomorrow : 5:31 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9445478
Common Questions About Tides

Union, WA Tides - Jul 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:2611.53:399.38:300.68:126.75:199:12Waxing Gibbous1Thu
2Fri2:0111.24:3310.29:12-0.39:127.35:209:12Waxing Gibbous2Fri
3Sat2:3511.05:1811.09:51-0.910:087.55:209:12Waxing Gibbous3Sat
4Sun3:0710.85:5811.610:29-1.411:007.65:219:11Full Moon4Sun
5Mon3:3810.56:3612.011:06-1.611:487.65:229:11Full Moon5Mon
6Tue4:1010.37:1312.311:42-1.85:239:11Full Moon6Tue
7Wed4:4310.07:5112.512:347.512:18-1.75:239:10Full Moon7Wed
8Thu5:179.68:2712.51:207.312:53-1.45:249:10Waning Gibbous8Thu
9Fri5:549.29:0312.42:087.11:28-0.95:259:09Waning Gibbous9Fri
10Sat6:368.69:3612.22:566.72:03-0.25:269:08Waning Gibbous10Sat
11Sun7:268.010:0712.03:456.12:390.75:279:08Waning Gibbous11Sun
12Mon8:317.510:3611.84:345.43:181.95:289:07Third Quarter12Mon
13Tue10:017.111:0411.65:234.44:043.25:299:06Third Quarter13Tue
14Wed12:057.26:113.15:034.65:309:06Third Quarter14Wed
15Thu1:438.17:001.76:175.95:319:05Third Quarter15Thu
16Fri12:0911.42:589.37:470.27:356.95:329:04Waning Crescent16Fri
17Sat12:5211.44:0010.68:35-1.38:477.55:339:03Waning Crescent17Sat
18Sun1:4011.54:5411.89:24-2.59:537.75:349:02Waning Crescent18Sun
19Mon2:3211.55:4312.610:12-3.410:537.65:359:01New Moon19Mon
20Tue3:2711.46:2913.211:01-3.911:487.25:369:00New Moon20Tue
21Wed4:2311.37:1313.411:48-3.95:378:59New Moon21Wed
22Thu5:2010.97:5513.412:416.712:35-3.45:388:58Waxing Crescent22Thu
23Fri6:1810.38:3713.21:336.01:21-2.35:398:57Waxing Crescent23Fri
24Sat7:219.59:1712.92:275.32:07-0.95:408:56Waxing Crescent24Sat
25Sun8:328.79:5612.43:224.52:530.85:428:55Waxing Crescent25Sun
26Mon9:528.110:3412.04:183.73:412.65:438:54First Quarter26Mon
27Tue11:197.811:1211.55:142.94:334.35:448:53First Quarter27Tue
28Wed12:508.06:092.25:335.75:458:51First Quarter28Wed
29Thu2:148.77:021.46:416.85:468:50Waxing Gibbous29Thu
30Fri12:3110.73:219.57:520.77:497.55:488:49Waxing Gibbous30Fri
31Sat1:1410.54:1410.38:380.18:537.75:498:48Waxing Gibbous31Sat
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 3:46 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 3% 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 New Moon (3% 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