Tides Today & Tomorrow in Portland, OR

TIDE TIMES for Thursday, July 30, 2026
The tide is currently falling in Portland, OR.
Next low tide (tomorrow) : in 5h 46m at 2:04 am (0.7 ft)
Next high tide (tomorrow) : 6:32 am (3.0 ft)
Sunset today : 8:41 pm
Sunrise tomorrow : 5:52 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9439221
Common Questions About Tides

Portland, OR Tides - Sep 2091

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:322.67:573.03:200.63:070.46:337:48Waning Gibbous1Sat
2Sun8:162.38:333.03:580.73:210.46:347:46Waning Gibbous2Sun
3Mon9:032.19:123.04:380.73:480.56:357:44Waning Gibbous3Mon
4Tue9:591.89:563.05:290.84:250.66:367:42Third Quarter4Tue
5Wed11:081.610:462.96:520.95:100.76:377:40Third Quarter5Wed
6Thu12:411.68:300.86:020.86:397:38Third Quarter6Thu
7Fri3:101.79:370.67:010.96:407:36Third Quarter7Fri
8Sat12:462.83:421.810:270.48:111.06:417:34Waning Crescent8Sat
9Sun1:502.83:492.011:100.29:421.06:427:33Waning Crescent9Sun
10Mon2:492.94:142.211:490.111:060.96:437:31Waning Crescent10Mon
11Tue3:433.04:452.512:260.06:457:29New Moon11Tue
12Wed4:333.15:202.812:100.71:01-0.16:467:27New Moon12Wed
13Thu5:203.15:573.11:050.61:34-0.16:477:25New Moon13Thu
14Fri6:053.16:353.31:570.42:06-0.16:487:23New Moon14Fri
15Sat6:512.97:163.52:460.42:370.06:497:21Waxing Crescent15Sat
16Sun7:382.77:583.63:370.43:070.16:517:19Waxing Crescent16Sun
17Mon8:292.48:443.64:310.53:390.26:527:17Waxing Crescent17Mon
18Tue9:252.19:333.45:340.54:140.36:537:15First Quarter18Tue
19Wed10:311.810:263.26:470.64:540.56:547:13First Quarter19Wed
20Thu11:521.711:263.08:040.55:450.76:567:11First Quarter20Thu
21Fri1:301.89:110.46:540.96:577:09First Quarter21Fri
22Sat12:312.82:472.010:070.28:510.96:587:07Waxing Gibbous22Sat
23Sun1:392.73:342.210:550.110:200.86:597:05Waxing Gibbous23Sun
24Mon2:412.74:102.511:390.011:230.77:017:04Waxing Gibbous24Mon
25Tue3:372.74:422.712:180.07:027:02Full Moon25Tue
26Wed4:252.75:122.812:160.612:530.17:037:00Full Moon26Wed
27Thu5:092.75:433.01:030.51:230.27:046:58Full Moon27Thu
28Fri5:512.76:143.11:470.41:460.37:056:56Full Moon28Fri
29Sat6:312.66:463.22:270.42:020.47:076:54Waning Gibbous29Sat
30Sun7:122.47:193.33:060.52:180.57:086:52Waning Gibbous30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9439221)

Common Questions About Portland, OR Tides

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

Slack tide in Portland, OR is approximately 4:18 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 99% 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 Full Moon (99% 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