Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Saturday, August 22, 2026
The tide is currently rising in Port Graham, AK.
Next low tide (tomorrow) : 6:29 am (3.6 ft)
Next high tide : in 5h 14m at 11:05 pm (12.7 ft)
Sunset today : 9:37 pm
Sunrise tomorrow : 6:42 am
Moon phase : Waxing Gibbous (75% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Jul 1934

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:5518.14:5017.910:09-2.810:391.22:559:25Waning Gibbous1Sun
2Mon4:5016.35:3717.310:57-0.911:381.62:569:25Third Quarter2Mon
3Tue5:5014.56:2716.611:471.32:589:24Third Quarter3Tue
4Wed7:0012.97:2015.912:432.012:433.42:599:23Third Quarter4Wed
5Thu8:2112.08:1915.41:552.11:465.13:009:22Waning Crescent5Thu
6Fri9:4512.09:2015.23:091.82:576.13:019:21Waning Crescent6Fri
7Sat10:5612.610:1715.34:151.24:056.43:039:20Waning Crescent7Sat
8Sun11:5213.411:0915.65:090.55:026.13:049:19Waning Crescent8Sun
9Mon12:3614.25:53-0.25:495.53:069:18New Moon9Mon
10Tue1:1414.96:32-0.96:314.83:079:17New Moon10Tue
11Wed12:3616.61:4715.57:07-1.47:094.13:099:15New Moon11Wed
12Thu1:1416.92:1915.97:39-1.87:453.53:119:14New Moon12Thu
13Fri1:5017.02:4916.18:11-1.88:203.13:129:13Waxing Crescent13Fri
14Sat2:2516.83:1916.18:42-1.68:562.93:149:11Waxing Crescent14Sat
15Sun3:0016.33:4816.09:14-1.09:322.93:169:09Waxing Crescent15Sun
16Mon3:3615.54:1815.89:450.010:113.13:189:08Waxing Crescent16Mon
17Tue4:1514.44:4815.610:181.310:533.33:209:06First Quarter17Tue
18Wed4:5913.25:2315.310:542.811:423.43:219:04First Quarter18Wed
19Thu5:5412.16:0615.111:374.33:239:02First Quarter19Thu
20Fri7:0611.26:5915.012:423.512:335.73:259:01First Quarter20Fri
21Sat8:3611.18:0615.21:553.01:476.73:278:59Waxing Gibbous21Sat
22Sun10:0212.09:1815.93:131.93:086.73:308:57Waxing Gibbous22Sun
23Mon11:0813.510:2617.14:210.24:205.83:328:55Waxing Gibbous23Mon
24Tue12:0215.25:18-1.75:214.33:348:53Waxing Gibbous24Tue
25Wed12:4916.86:08-3.46:142.63:368:51Full Moon25Wed
26Thu12:2319.71:3218.26:53-4.77:031.03:388:48Full Moon26Thu
27Fri1:1420.52:1319.27:37-5.37:51-0.33:408:46Full Moon27Fri
28Sat2:0320.62:5319.78:19-5.18:37-1.03:428:44Waning Gibbous28Sat
29Sun2:5119.93:3319.79:00-4.19:24-1.13:458:42Waning Gibbous29Sun
30Mon3:3918.64:1219.19:41-2.310:13-0.53:478:39Waning Gibbous30Mon
31Tue4:2916.74:5318.110:23-0.111:050.53:498:37Third Quarter31Tue
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 2:47 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 Port Graham, AK?

Port Graham, AK is currently in a transitional phase. Tonight's moon is 75% 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 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 Waxing Gibbous (75% illuminated). This places Port Graham, AK 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