Tides Today & Tomorrow in Portland, OR

TIDE TIMES for Friday, July 17, 2026
The tide is currently falling in Portland, OR.
Next low tide : in 3h 34m at 3:11 am (0.6 ft)
Next high tide : 7:25 am (3.0 ft)
Sunset today : 8:55 pm
Sunrise tomorrow : 5:37 am
Moon phase : Waxing Crescent (8% illuminated)
Tide Station Location : Station #9439221
Common Questions About Tides

Portland, OR Tides - Dec 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:301.77:003.33:300.32:000.97:304:29Waning Gibbous1Sun
2Mon8:191.77:473.14:100.42:481.07:314:28Waning Gibbous2Mon
3Tue9:151.78:412.94:510.53:401.17:324:28Third Quarter3Tue
4Wed10:171.99:452.65:330.54:391.27:344:28Third Quarter4Wed
5Thu11:172.110:572.46:140.46:001.27:354:27Third Quarter5Thu
6Fri12:112.56:540.47:551.17:364:27Third Quarter6Fri
7Sat12:112.312:592.97:310.39:220.87:374:27Waning Crescent7Sat
8Sun1:192.21:463.38:070.210:270.57:384:27Waning Crescent8Sun
9Mon2:192.12:313.78:440.211:250.27:394:27Waning Crescent9Mon
10Tue3:142.13:153.99:270.27:404:27New Moon10Tue
11Wed4:042.03:584.012:170.010:20 AM0.37:404:27New Moon11Wed
12Thu4:522.04:424.01:07-0.111:22 AM0.47:414:27New Moon12Thu
13Fri5:401.95:253.81:55-0.112:220.57:424:27Waxing Crescent13Fri
14Sat6:291.96:103.62:41-0.11:170.67:434:27Waxing Crescent14Sat
15Sun7:211.96:563.23:280.02:090.77:444:27Waxing Crescent15Sun
16Mon8:181.97:452.94:140.23:000.97:444:28Waxing Crescent16Mon
17Tue9:251.98:402.65:000.33:541.07:454:28First Quarter17Tue
18Wed10:472.19:442.35:440.45:031.17:464:28First Quarter18Wed
19Thu11:492.211:012.16:250.56:441.17:464:29First Quarter19Thu
20Fri12:252.46:590.68:161.07:474:29First Quarter20Fri
21Sat12:222.012:592.77:170.69:230.87:474:30Waxing Gibbous21Sat
22Sun1:332.01:332.97:260.610:170.57:484:30Waxing Gibbous22Sun
23Mon2:292.02:093.17:530.611:060.37:484:31Waxing Gibbous23Mon
24Tue3:172.02:453.38:330.611:510.27:494:31Waxing Gibbous24Tue
25Wed4:002.03:223.49:210.77:494:32Full Moon25Wed
26Thu4:381.94:003.512:340.110:20 AM0.87:494:33Full Moon26Thu
27Fri5:151.94:393.51:140.011:22 AM0.87:504:33Full Moon27Fri
28Sat5:501.95:193.51:520.112:190.87:504:34Full Moon28Sat
29Sun6:271.96:013.42:280.11:090.97:504:35Waning Gibbous29Sun
30Mon7:051.96:443.33:010.21:560.97:504:36Waning Gibbous30Mon
31Tue7:482.07:313.13:330.22:421.07:504:37Waning Gibbous31Tue
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 5:18 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 spring phase. Tonight's moon is 8% 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 Waxing Crescent (8% 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