Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Tuesday, August 11, 2026
The tide is currently falling in Port Graham, AK.
Next low tide : in 4h 02m at 8:02 am (-3.0 ft)
Next high tide : 2:40 pm (17.1 ft)
Sunset today : 10:08 pm
Sunrise tomorrow : 6:16 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Oct 1952

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:3918.711:5019.05:11-0.95:33-0.36:135:40Full Moon1Wed
2Thu12:1620.25:52-1.76:16-2.46:155:37Full Moon2Thu
3Fri12:3719.912:5121.16:31-1.86:58-3.86:185:34Full Moon3Fri
4Sat1:2220.11:2721.57:10-1.27:38-4.26:205:31Full Moon4Sat
5Sun2:0519.72:0221.17:48-0.28:18-3.76:225:28Waning Gibbous5Sun
6Mon2:4818.72:3720.18:261.48:59-2.56:255:25Waning Gibbous6Mon
7Tue3:3217.23:1318.69:053.29:42-0.66:275:22Waning Gibbous7Tue
8Wed4:1915.43:5216.79:475.210:301.56:295:19Third Quarter8Wed
9Thu5:1513.64:3814.810:367.011:293.56:325:16Third Quarter9Thu
10Fri6:3112.35:4313.011:438.46:345:14Third Quarter10Fri
11Sat8:1112.07:2412.012:524.81:258.96:365:11Third Quarter11Sat
12Sun9:3112.79:0512.42:324.93:137.96:395:08Waning Crescent12Sun
13Mon10:1913.710:0813.43:414.24:106.26:415:05Waning Crescent13Mon
14Tue10:5114.810:5214.54:233.44:474.46:435:02Waning Crescent14Tue
15Wed11:1816.011:3015.64:552.75:192.76:464:59Waning Crescent15Wed
16Thu11:4317.15:252.15:491.06:484:56Waning Crescent16Thu
17Fri12:0516.612:0818.05:541.86:19-0.46:514:54New Moon17Fri
18Sat12:4017.312:3518.86:241.76:50-1.46:534:51New Moon18Sat
19Sun1:1517.71:0319.36:561.87:22-2.06:554:48New Moon19Sun
20Mon1:5117.71:3319.57:282.37:56-2.16:584:45Waxing Crescent20Mon
21Tue2:2817.32:0519.38:033.18:33-1.77:004:42Waxing Crescent21Tue
22Wed3:0916.52:4018.68:394.29:14-0.97:034:40Waxing Crescent22Wed
23Thu3:5515.43:2117.69:215.310:020.37:054:37Waxing Crescent23Thu
24Fri4:5114.24:1216.210:136.511:021.67:084:34First Quarter24Fri
25Sat6:0313.55:2214.811:237.47:104:32First Quarter25Sat
26Sun7:2613.56:5613.912:162.512:527.47:134:29First Quarter26Sun
27Mon8:4014.58:3114.31:392.82:236.07:154:26Waxing Gibbous27Mon
28Tue9:3716.09:4715.42:532.33:353.67:184:24Waxing Gibbous28Tue
29Wed10:2317.710:4716.73:521.74:291.17:204:21Waxing Gibbous29Wed
30Thu11:0419.111:3817.84:411.25:16-1.17:224:19Waxing Gibbous30Thu
31Fri11:4220.25:240.95:58-2.87:254:16Full Moon31Fri
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 11:21 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 spring phase. Tonight's moon is 1% 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 (1% 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