Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Thursday, August 13, 2026
The tide is currently rising in Port Graham, AK.
Next low tide : 9:25 am (-4.4 ft)
Next high tide : in 6h 03m at 3:11 am (20.1 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 1949

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:4817.22:1618.28:124.18:42-1.59:033:18Waxing Crescent1Sat
2Sun3:2416.92:5417.48:524.29:18-0.69:033:20Waxing Crescent2Sun
3Mon4:0016.43:3216.49:324.69:530.59:023:21Waxing Crescent3Mon
4Tue4:3515.84:1315.110:155.010:291.99:013:23Waxing Crescent4Tue
5Wed5:1115.24:5813.711:015.411:073.39:013:24First Quarter5Wed
6Thu5:4914.75:5212.411:535.611:494.89:003:26First Quarter6Thu
7Fri6:3114.47:0011.412:545.68:593:28First Quarter7Fri
8Sat7:1914.38:2411.112:406.22:035.28:583:30First Quarter8Sat
9Sun8:1314.59:4711.71:447.33:124.18:573:31Waxing Gibbous9Sun
10Mon9:1115.110:5312.82:567.74:112.78:563:33Waxing Gibbous10Mon
11Tue10:0616.011:4514.24:017.55:011.08:553:35Waxing Gibbous11Tue
12Wed10:5917.24:576.75:46-0.78:533:37Waxing Gibbous12Wed
13Thu12:3015.511:48 AM18.45:475.66:29-2.28:523:39Full Moon13Thu
14Fri1:1216.712:3619.56:334.47:10-3.58:513:42Full Moon14Fri
15Sat1:5217.81:2320.37:173.27:51-4.38:493:44Full Moon15Sat
16Sun2:3118.52:0920.58:022.38:32-4.38:483:46Waning Gibbous16Sun
17Mon3:1118.92:5620.08:471.79:14-3.78:463:48Waning Gibbous17Mon
18Tue3:5119.03:4418.99:351.49:56-2.38:443:50Waning Gibbous18Tue
19Wed4:3218.74:3617.210:261.510:41-0.38:433:53Third Quarter19Wed
20Thu5:1618.25:3515.311:221.911:301.98:413:55Third Quarter20Thu
21Fri6:0317.56:4613.512:262.48:393:57Third Quarter21Fri
22Sat6:5816.78:1512.512:264.21:412.68:374:00Third Quarter22Sat
23Sun8:0316.19:4912.71:346.13:042.38:364:02Waning Crescent23Sun
24Mon9:1515.911:0513.62:547.14:191.48:344:05Waning Crescent24Mon
25Tue10:2316.24:117.15:170.48:324:07Waning Crescent25Tue
26Wed12:0214.811:21 AM16.85:146.36:04-0.58:304:09Waning Crescent26Wed
27Thu12:4615.812:1017.56:035.36:44-1.28:284:12New Moon27Thu
28Fri1:2316.612:5218.06:454.37:19-1.78:254:14New Moon28Fri
29Sat1:5717.11:3018.37:223.57:51-1.98:234:17New Moon29Sat
30Sun2:2717.42:0518.27:582.88:21-1.78:214:19New Moon30Sun
31Mon2:5617.52:3917.88:322.58:51-1.18:194:22Waxing Crescent31Mon
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 6:18 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