Tides Today & Tomorrow in Portland, OR

TIDE TIMES for Tuesday, August 4, 2026
The tide is currently rising in Portland, OR.
Next low tide (tomorrow) : 6:22 am (0.9 ft)
Next high tide : in 3h 47m at 10:03 pm (3.3 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:58 am
Moon phase : Third Quarter (64% illuminated)
Tide Station Location : Station #9439221
Common Questions About Tides

Portland, OR Tides - Dec 1962

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:431.87:253.53:440.32:260.97:304:29Waxing Crescent1Sat
2Sun8:361.88:163.24:280.43:141.07:314:28Waxing Crescent2Sun
3Mon9:361.99:153.05:140.44:101.07:324:28First Quarter3Mon
4Tue10:412.110:222.76:030.45:221.17:334:28First Quarter4Tue
5Wed11:432.411:352.56:520.47:081.17:344:27First Quarter5Wed
6Thu12:402.77:400.38:440.87:354:27Waxing Gibbous6Thu
7Fri12:462.41:313.18:260.39:560.57:364:27Waxing Gibbous7Fri
8Sat1:512.32:183.49:110.210:560.37:374:27Waxing Gibbous8Sat
9Sun2:482.33:033.69:580.311:500.17:384:27Full Moon9Sun
10Mon3:402.33:463.810:470.37:394:27Full Moon10Mon
11Tue4:292.24:283.812:41-0.111:36 AM0.47:404:27Full Moon11Tue
12Wed5:162.25:093.71:29-0.112:230.57:414:27Full Moon12Wed
13Thu6:022.15:503.52:15-0.11:090.67:424:27Waning Gibbous13Thu
14Fri6:492.06:333.32:590.11:510.77:434:27Waning Gibbous14Fri
15Sat7:392.07:173.03:430.22:320.97:434:27Waning Gibbous15Sat
16Sun8:331.98:062.74:250.43:131.07:444:28Waning Gibbous16Sun
17Mon9:342.09:032.55:050.54:001.17:454:28Third Quarter17Mon
18Tue10:392.110:102.25:420.65:031.27:464:28Third Quarter18Tue
19Wed11:372.311:282.16:120.67:001.17:464:29Third Quarter19Wed
20Thu12:222.56:360.68:321.07:474:29Third Quarter20Thu
21Fri12:462.11:032.77:040.69:350.77:474:29Waning Crescent21Fri
22Sat1:512.11:412.97:420.510:280.57:484:30Waning Crescent22Sat
23Sun2:412.12:193.18:260.511:170.37:484:30Waning Crescent23Sun
24Mon3:252.12:573.39:140.57:494:31Waning Crescent24Mon
25Tue4:042.13:363.512:020.210:08 AM0.67:494:32New Moon25Tue
26Wed4:412.04:153.612:440.111:04 AM0.67:494:32New Moon26Wed
27Thu5:182.04:563.71:250.011:58 AM0.77:504:33New Moon27Thu
28Fri5:562.05:383.72:040.112:480.77:504:34Waxing Crescent28Fri
29Sat6:372.06:223.62:410.11:350.87:504:35Waxing Crescent29Sat
30Sun7:212.17:093.43:170.12:220.87:504:35Waxing Crescent30Sun
31Mon8:092.28:013.23:530.23:120.97:504:36Waxing Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9439221)

Common Questions About Portland, OR Tides

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What time does the tide turn (slack tide) in Portland, OR today?

Slack tide in Portland, OR is approximately 2:12 am — 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 Portland, OR?

Portland, OR is currently in a transitional phase. Tonight's moon is 64% 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 Portland, OR 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 Portland, OR?

Tide predictions for Portland, OR 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 Portland, OR?

Tide data for Portland, OR is sourced from NOAA Station #9439221. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9439221.

What is the moon phase in Portland, OR tonight?

Tonight the moon over Portland, OR is Third Quarter (64% illuminated). This places Portland, OR 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