Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Monday, August 10, 2026
The tide is currently falling in Port Graham, AK.
Next low tide : in 26m at 7:17 pm (4.2 ft)
Next high tide (tomorrow) : 1:28 am (18.3 ft)
Sunset today : 10:10 pm
Sunrise tomorrow : 6:14 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Jul 1953

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:4817.54:4317.510:04-2.510:341.52:569:25Waning Gibbous1Wed
2Thu4:4116.15:2917.210:50-0.811:321.62:579:25Third Quarter2Thu
3Fri5:4214.66:1816.811:401.12:589:24Third Quarter3Fri
4Sat6:5313.27:1316.512:361.712:373.02:599:23Third Quarter4Sat
5Sun8:1512.48:1416.31:481.51:434.63:019:22Waning Crescent5Sun
6Mon9:4012.69:1916.33:030.92:565.53:029:21Waning Crescent6Mon
7Tue10:5313.410:2116.64:110.04:075.63:039:20Waning Crescent7Tue
8Wed11:5314.411:1817.15:10-1.05:085.13:059:19Waning Crescent8Wed
9Thu12:4215.35:59-1.86:004.43:069:17New Moon9Thu
10Fri12:0917.61:2416.16:42-2.46:453.63:089:16New Moon10Fri
11Sat12:5417.92:0116.57:21-2.77:272.93:109:15New Moon11Sat
12Sun1:3617.92:3616.87:57-2.78:062.53:119:13New Moon12Sun
13Mon2:1417.63:0916.78:32-2.38:442.43:139:12Waxing Crescent13Mon
14Tue2:5117.03:4016.59:05-1.59:222.53:159:10Waxing Crescent14Tue
15Wed3:2816.04:1016.19:37-0.410:002.83:179:09Waxing Crescent15Wed
16Thu4:0614.84:4115.510:101.010:413.33:199:07Waxing Crescent16Thu
17Fri4:4713.55:1315.010:442.611:263.83:209:05First Quarter17Fri
18Sat5:3512.15:5014.411:214.23:229:04First Quarter18Sat
19Sun6:3611.06:3414.012:194.212:065.83:249:02First Quarter19Sun
20Mon7:5710.47:3113.81:244.31:087.03:269:00First Quarter20Mon
21Tue9:2810.78:3914.12:423.82:267.63:288:58Waxing Gibbous21Tue
22Wed10:4111.89:4714.93:532.63:437.33:308:56Waxing Gibbous22Wed
23Thu11:3513.210:4716.24:491.04:456.23:338:54Waxing Gibbous23Thu
24Fri12:1914.75:36-0.85:374.73:358:52Full Moon24Fri
25Sat12:5916.26:18-2.56:233.13:378:50Full Moon25Sat
26Sun12:2918.81:3717.56:59-3.87:081.53:398:48Full Moon26Sun
27Mon1:1619.72:1418.67:38-4.67:520.23:418:45Full Moon27Mon
28Tue2:0220.02:5219.38:18-4.68:37-0.63:438:43Waning Gibbous28Tue
29Wed2:4819.63:2919.58:57-3.89:23-0.93:468:41Waning Gibbous29Wed
30Thu3:3618.54:0919.29:38-2.310:11-0.73:488:39Waning Gibbous30Thu
31Fri4:2716.84:5018.510:22-0.311:050.03:508:36Third Quarter31Fri
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 10:22 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 5% 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 Waning Crescent (5% 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