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 : 8:45 am (-4.0 ft)
Next high tide : in 1h 44m at 2:22 am (19.5 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 - Jan 1951

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:3515.97:1712.51:014.19:033:17Third Quarter1Mon
2Tue7:3016.28:4512.612:575.12:153.19:033:19Third Quarter2Tue
3Wed8:3216.810:0613.52:096.03:271.69:023:20Waning Crescent3Wed
4Thu9:3617.611:1414.93:226.24:30-0.39:023:22Waning Crescent4Thu
5Fri10:3718.74:295.75:26-2.09:013:23Waning Crescent5Fri
6Sat12:1016.411:35 AM19.85:284.86:17-3.49:003:25New Moon6Sat
7Sun1:0017.712:2920.66:213.77:04-4.48:593:27New Moon7Sun
8Mon1:4618.61:2021.07:112.67:49-4.78:583:29New Moon8Mon
9Tue2:2919.12:0920.77:591.98:31-4.38:573:30Waxing Crescent9Tue
10Wed3:1119.22:5519.88:451.69:13-3.28:563:32Waxing Crescent10Wed
11Thu3:5218.93:4118.49:321.89:54-1.58:553:34Waxing Crescent11Thu
12Fri4:3218.24:2916.510:212.310:340.58:543:36Waxing Crescent12Fri
13Sat5:1217.35:1914.511:123.011:162.78:533:38First Quarter13Sat
14Sun5:5316.36:1912.712:083.88:513:41First Quarter14Sun
15Mon6:3815.37:3411.412:024.91:144.48:503:43First Quarter15Mon
16Tue7:3014.69:0911.112:566.82:314.48:483:45First Quarter16Tue
17Wed8:3214.210:3511.82:078.13:483.98:473:47Waxing Gibbous17Wed
18Thu9:3714.311:3312.83:278.54:462.98:453:49Waxing Gibbous18Thu
19Fri10:3415.04:348.15:311.88:443:52Waxing Gibbous19Fri
20Sat12:1613.911:23 AM15.85:247.26:080.68:423:54Waxing Gibbous20Sat
21Sun12:5114.912:0616.86:056.16:42-0.58:403:56Full Moon21Sun
22Mon1:2215.812:4517.66:425.07:14-1.48:383:59Full Moon22Mon
23Tue1:5316.61:2218.27:184.07:45-2.08:364:01Full Moon23Tue
24Wed2:2217.21:5818.47:533.28:16-2.28:354:03Full Moon24Wed
25Thu2:5117.62:3418.38:292.58:48-1.98:334:06Waning Gibbous25Thu
26Fri3:2117.83:1217.69:052.19:20-1.18:314:08Waning Gibbous26Fri
27Sat3:5117.93:5216.69:442.09:550.28:294:11Waning Gibbous27Sat
28Sun4:2317.74:3715.210:282.110:331.98:264:13Third Quarter28Sun
29Mon4:5917.45:3313.711:182.411:173.98:244:16Third Quarter29Mon
30Tue5:4316.86:4612.412:202.78:224:18Third Quarter30Tue
31Wed6:3916.38:2411.912:145.81:382.88:204:21Third Quarter31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9455437)

Common Questions About Port Graham, AK Tides

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

Slack tide in Port Graham, AK is approximately 5:33 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 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