Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently rising in Port Graham, AK.
Next low tide : 8:56 pm (0.6 ft)
Next high tide : in 2h 11m at 3:21 pm (18.4 ft)
Sunset today : 10:05 pm
Sunrise tomorrow : 6:19 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Oct 1949

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:1013.89:4814.03:203.23:447.06:125:41Waxing Gibbous1Sat
2Sun10:5915.010:4815.04:242.34:415.36:155:38Waxing Gibbous2Sun
3Mon11:3616.011:3216.05:071.55:213.56:175:35Waxing Gibbous3Mon
4Tue12:0516.95:400.95:552.06:195:32Waxing Gibbous4Tue
5Wed12:0816.812:3017.76:090.56:250.76:225:29Full Moon5Wed
6Thu12:4017.412:5418.26:350.56:54-0.36:245:26Full Moon6Thu
7Fri1:1217.71:1818.67:020.77:23-0.96:265:23Full Moon7Fri
8Sat1:4317.71:4118.67:301.37:52-1.16:295:20Full Moon8Sat
9Sun2:1517.32:0618.47:582.18:22-0.86:315:17Waning Gibbous9Sun
10Mon2:4816.62:3117.98:273.38:530.06:335:14Waning Gibbous10Mon
11Tue3:2315.62:5817.18:564.79:271.06:365:11Waning Gibbous11Tue
12Wed4:0214.23:2816.09:286.110:072.26:385:09Waning Gibbous12Wed
13Thu4:5212.84:0614.810:087.511:013.56:405:06Third Quarter13Thu
14Fri6:0511.85:0513.611:088.86:435:03Third Quarter14Fri
15Sat7:4611.76:4512.812:204.312:489.26:455:00Third Quarter15Sat
16Sun9:1012.88:3113.41:544.02:328.16:484:57Third Quarter16Sun
17Mon10:0114.59:4714.93:112.93:435.76:504:54Waning Crescent17Mon
18Tue10:4116.410:4416.74:061.44:342.96:524:52Waning Crescent18Tue
19Wed11:1718.411:3418.44:510.15:190.16:554:49Waning Crescent19Wed
20Thu11:5320.15:32-0.86:01-2.36:574:46New Moon20Thu
21Fri12:2219.612:3021.46:13-1.26:43-4.17:004:43New Moon21Fri
22Sat1:0820.21:0722.16:53-0.97:25-5.07:024:41New Moon22Sat
23Sun1:5420.11:4522.17:340.08:07-4.97:054:38Waxing Crescent23Sun
24Mon2:4119.42:2521.38:161.38:52-3.87:074:35Waxing Crescent24Mon
25Tue3:3018.03:0719.89:003.19:40-2.07:094:32Waxing Crescent25Tue
26Wed4:2316.33:5317.89:494.910:340.27:124:30First Quarter26Wed
27Thu5:2714.74:5015.610:476.711:412.37:144:27First Quarter27Thu
28Fri6:4713.66:0813.712:057.97:174:24First Quarter28Fri
29Sat8:1613.57:5112.81:063.61:487.87:194:22First Quarter29Sat
30Sun9:2814.29:2113.22:373.93:206.57:224:19Waxing Gibbous30Sun
31Mon10:1615.110:2214.03:423.54:164.87:244:17Waxing Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9455437)

Common Questions About Port Graham, AK Tides

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What time does the tide turn (slack tide) in Port Graham, AK today?

Slack tide in Port Graham, AK is approximately 6:08 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 Port Graham, AK?

Port Graham, AK is currently in a spring phase. Tonight's moon is 0% 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 Port Graham, AK 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 Port Graham, AK?

Tide predictions for Port Graham, AK 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 Port Graham, AK?

Tide data for Port Graham, AK is sourced from NOAA Station #9455437. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9455437.

What is the moon phase in Port Graham, AK tonight?

Tonight the moon over Port Graham, AK is New Moon (0% illuminated). This places Port Graham, AK 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