Tides Today & Tomorrow in Portland, OR

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Portland, OR.
Next low tide : 10:58 pm (0.9 ft)
Next high tide : in 3h 10m at 4:27 pm (1.9 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 6:05 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #9439221
Common Questions About Tides

Portland, OR Tides - Jul 1952

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:421.68:350.96:360.65:259:03First Quarter1Tue
2Wed12:423.11:581.510:110.77:190.75:269:02Waxing Gibbous2Wed
3Thu1:323.33:081.511:140.48:060.85:279:02Waxing Gibbous3Thu
4Fri2:233.44:051.612:050.15:279:02Waxing Gibbous4Fri
5Sat3:153.54:521.712:51-0.15:289:02Waxing Gibbous5Sat
6Sun4:063.65:361.81:34-0.25:299:01Full Moon6Sun
7Mon4:563.76:182.02:14-0.35:299:01Full Moon7Mon
8Tue5:463.67:002.21:100.82:53-0.35:309:00Full Moon8Tue
9Wed6:353.57:442.42:080.73:29-0.35:319:00Waning Gibbous9Wed
10Thu7:243.38:292.63:010.64:03-0.25:328:59Waning Gibbous10Thu
11Fri8:143.09:172.83:530.64:350.05:338:59Waning Gibbous11Fri
12Sat9:072.610:062.94:490.75:030.15:338:58Third Quarter12Sat
13Sun10:052.210:573.05:550.85:270.25:348:57Third Quarter13Sun
14Mon11:111.911:473.17:190.85:460.45:358:57Third Quarter14Mon
15Tue12:281.68:490.76:120.55:368:56Third Quarter15Tue
16Wed12:383.11:511.610:020.56:490.75:378:55Waning Crescent16Wed
17Thu1:283.13:071.611:010.37:350.85:388:54Waning Crescent17Thu
18Fri2:183.04:071.811:510.18:311.05:398:54Waning Crescent18Fri
19Sat3:083.04:541.912:360.05:408:53Waning Crescent19Sat
20Sun3:553.05:342.11:17-0.15:418:52New Moon20Sun
21Mon4:413.06:092.212:001.01:530.05:428:51New Moon21Mon
22Tue5:253.06:412.312:550.92:260.05:438:50New Moon22Tue
23Wed6:083.07:122.41:400.82:530.15:448:49New Moon23Wed
24Thu6:502.97:442.62:210.73:140.25:458:48Waxing Crescent24Thu
25Fri7:322.78:172.73:010.73:300.25:468:47Waxing Crescent25Fri
26Sat8:142.58:532.93:410.73:470.35:478:46Waxing Crescent26Sat
27Sun8:592.39:323.04:240.84:100.35:498:45Waxing Crescent27Sun
28Mon9:492.010:153.15:130.94:390.45:508:43First Quarter28Mon
29Tue10:501.711:023.26:281.05:150.55:518:42First Quarter29Tue
30Wed12:071.48:360.95:550.65:528:41First Quarter30Wed
31Thu1:341.39:590.66:420.75:538:40First Quarter31Thu
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 7:42 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 Portland, OR?

Portland, OR is currently in a spring phase. Tonight's moon is 5% 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 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 Waning Crescent (5% illuminated). This places Portland, OR 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