Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Port Graham, AK.
Next low tide : in 1h 25m at 1:09 pm (5.4 ft)
Next high tide : 7:25 pm (14.8 ft)
Sunset today : 9:46 pm
Sunrise tomorrow : 6:35 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Dec 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:0314.38:3512.11:155.52:255.58:363:16First Quarter1Thu
2Fri8:5515.29:4413.12:205.73:263.98:383:14Waxing Gibbous2Fri
3Sat9:4316.310:4114.43:215.54:162.08:403:13Waxing Gibbous3Sat
4Sun10:2817.611:3115.84:144.95:010.18:423:12Waxing Gibbous4Sun
5Mon11:1219.05:024.15:44-1.88:443:11Full Moon5Mon
6Tue12:1717.111:56 AM20.15:483.26:27-3.38:453:10Full Moon6Tue
7Wed1:0218.212:4121.06:342.57:10-4.38:473:10Full Moon7Wed
8Thu1:4718.91:2721.37:192.07:53-4.68:493:09Full Moon8Thu
9Fri2:3219.32:1421.08:061.88:38-4.38:503:08Waning Gibbous9Fri
10Sat3:1719.23:0320.18:541.99:25-3.38:523:08Waning Gibbous10Sat
11Sun4:0518.73:5518.79:462.410:14-1.78:533:07Waning Gibbous11Sun
12Mon4:5618.14:5416.910:443.011:070.28:543:07Third Quarter12Mon
13Tue5:5117.46:0115.111:493.58:563:07Third Quarter13Tue
14Wed6:5016.97:2013.912:052.11:033.68:573:06Third Quarter14Wed
15Thu7:5316.68:4613.51:103.72:223.18:583:06Waning Crescent15Thu
16Fri8:5616.710:0213.92:214.83:342.18:593:06Waning Crescent16Fri
17Sat9:5317.011:0414.73:285.24:321.09:003:06Waning Crescent17Sat
18Sun10:4317.511:5415.64:275.25:200.09:013:06Waning Crescent18Sun
19Mon11:2717.95:164.96:01-0.89:013:07New Moon19Mon
20Tue12:3716.312:0818.25:594.56:37-1.39:023:07New Moon20Tue
21Wed1:1516.912:4518.46:384.17:12-1.69:033:07New Moon21Wed
22Thu1:5017.21:2118.57:163.77:45-1.69:033:08New Moon22Thu
23Fri2:2417.31:5618.27:523.68:18-1.39:043:08Waxing Crescent23Fri
24Sat2:5717.22:3117.78:293.78:51-0.89:043:09Waxing Crescent24Sat
25Sun3:3016.93:0616.99:063.99:240.19:043:10Waxing Crescent25Sun
26Mon4:0316.43:4415.89:454.39:581.29:043:11Waxing Crescent26Mon
27Tue4:3815.94:2514.610:274.810:352.59:043:12Waxing Crescent27Tue
28Wed5:1515.45:1413.311:155.211:163.99:043:13First Quarter28Wed
29Thu5:5815.16:1712.212:125.39:043:14First Quarter29Thu
30Fri6:4815.07:3511.712:075.21:205.09:043:15First Quarter30Fri
31Sat7:4715.29:0212.31:116.22:354.19:043:16Waxing Gibbous31Sat
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 4:17 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 neap phase. Tonight's moon is 47% 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 minimum.

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 First Quarter (47% illuminated). This places Port Graham, AK in a neap tide cycle, so tidal ranges are near their weekly minimum 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