Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Friday, August 7, 2026
The tide is currently rising in Port Graham, AK.
Next low tide : 3:23 pm (6.9 ft)
Next high tide : in 5h 32m at 10:13 am (11.5 ft)
Sunset today : 10:18 pm
Sunrise tomorrow : 6:07 am
Moon phase : Waning Crescent (31% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Dec 1959

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:4520.01:3022.17:200.77:54-5.28:363:16New Moon1Tue
2Wed2:3220.02:1721.68:081.08:41-4.58:383:14Waxing Crescent2Wed
3Thu3:2019.63:0620.48:571.69:28-3.28:403:13Waxing Crescent3Thu
4Fri4:1118.73:5818.69:492.610:19-1.48:423:12Waxing Crescent4Fri
5Sat5:0417.74:5516.610:473.611:140.68:433:11First Quarter5Sat
6Sun6:0316.76:0214.811:534.58:453:10First Quarter6Sun
7Mon7:0616.07:2113.512:152.51:094.88:473:10First Quarter7Mon
8Tue8:1115.88:4613.11:234.02:304.38:483:09First Quarter8Tue
9Wed9:1115.99:5913.52:334.83:393.38:503:08Waxing Gibbous9Wed
10Thu10:0216.310:5614.23:365.14:312.28:513:08Waxing Gibbous10Thu
11Fri10:4516.811:4115.04:275.05:131.18:533:07Waxing Gibbous11Fri
12Sat11:2317.35:104.85:500.28:543:07Waxing Gibbous12Sat
13Sun12:2115.811:57 AM17.85:484.46:23-0.68:553:07Full Moon13Sun
14Mon12:5716.412:3118.26:254.16:56-1.18:573:06Full Moon14Mon
15Tue1:3116.91:0518.47:003.87:29-1.48:583:06Full Moon15Tue
16Wed2:0517.21:3918.37:363.78:02-1.48:593:06Full Moon16Wed
17Thu2:3917.12:1418.08:113.88:35-1.19:003:06Waning Gibbous17Thu
18Fri3:1416.92:4917.48:484.19:10-0.59:003:06Waning Gibbous18Fri
19Sat3:4916.53:2716.59:274.59:470.49:013:07Waning Gibbous19Sat
20Sun4:2716.04:0915.410:105.010:271.59:023:07Waning Gibbous20Sun
21Mon5:0915.65:0014.211:015.311:142.69:033:07Third Quarter21Mon
22Tue5:5615.46:0513.212:015.39:033:08Third Quarter22Tue
23Wed6:5215.57:2412.812:093.71:114.89:033:08Third Quarter23Wed
24Thu7:5316.08:4713.21:154.52:253.69:043:09Waning Crescent24Thu
25Fri8:5416.910:0114.32:264.83:321.89:043:10Waning Crescent25Fri
26Sat9:5318.111:0315.93:344.44:31-0.29:043:10Waning Crescent26Sat
27Sun10:4819.511:5817.44:343.65:23-2.29:043:11Waning Crescent27Sun
28Mon11:4020.75:292.66:11-3.89:043:12New Moon28Mon
29Tue12:4818.812:3121.56:201.66:57-4.99:043:13New Moon29Tue
30Wed1:3519.71:2021.87:080.97:43-5.29:043:15New Moon30Wed
31Thu2:2020.22:0821.57:560.68:28-4.79:043:16Waxing Crescent31Thu
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 12:48 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 transitional phase. Tonight's moon is 31% 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 Waning Crescent (31% 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