Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Saturday, August 8, 2026
The tide is currently rising in Port Graham, AK.
Next low tide : 4:55 am (1.7 ft)
Next high tide (tomorrow) : in 1h 16m at 9:45 pm (15.5 ft)
Sunset today : 10:18 pm
Sunrise tomorrow : 6:07 am
Moon phase : Waning Crescent (31% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Dec 1958

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon4:2216.03:5916.010:005.110:240.98:373:15Waning Gibbous1Mon
2Tue5:0915.64:5314.910:545.511:152.08:383:14Third Quarter2Tue
3Wed6:0315.46:0213.811:595.58:403:13Third Quarter3Wed
4Thu7:0315.67:2413.412:163.11:134.98:423:12Third Quarter4Thu
5Fri8:0616.28:4813.91:243.72:283.58:443:11Waning Crescent5Fri
6Sat9:0617.310:0015.02:343.93:351.68:463:10Waning Crescent6Sat
7Sun10:0118.611:0116.53:393.54:32-0.58:473:09Waning Crescent7Sun
8Mon10:5219.911:5617.84:362.95:23-2.48:493:09Waning Crescent8Mon
9Tue11:4220.95:292.26:10-3.88:503:08New Moon9Tue
10Wed12:4618.912:2921.56:181.66:56-4.68:523:08New Moon10Wed
11Thu1:3319.51:1621.57:051.37:40-4.78:533:07New Moon11Thu
12Fri2:1919.62:0221.07:511.48:24-4.18:543:07Waxing Crescent12Fri
13Sat3:0319.32:4719.98:381.89:07-2.88:563:06Waxing Crescent13Sat
14Sun3:4818.63:3318.49:252.69:51-1.28:573:06Waxing Crescent14Sun
15Mon4:3317.64:2116.510:153.510:370.78:583:06Waxing Crescent15Mon
16Tue5:2116.55:1414.711:104.511:252.68:593:06First Quarter16Tue
17Wed6:1215.66:1713.012:125.29:003:06First Quarter17Wed
18Thu7:0714.97:3312.012:194.41:235.49:013:06First Quarter18Thu
19Fri8:0614.78:5611.91:215.72:405.09:013:07First Quarter19Fri
20Sat9:0214.810:0612.52:296.43:444.09:023:07Waxing Gibbous20Sat
21Sun9:5215.311:0013.43:316.54:332.89:033:07Waxing Gibbous21Sun
22Mon10:3616.111:4414.54:246.25:131.69:033:08Waxing Gibbous22Mon
23Tue11:1616.95:085.65:490.49:043:08Waxing Gibbous23Tue
24Wed12:2315.511:54 AM17.75:484.96:24-0.79:043:09Full Moon24Wed
25Thu1:0016.412:3218.46:274.26:58-1.69:043:10Full Moon25Thu
26Fri1:3517.11:0918.87:043.67:33-2.19:043:11Full Moon26Fri
27Sat2:1017.61:4719.07:423.28:08-2.39:043:12Full Moon27Sat
28Sun2:4517.92:2518.78:212.98:44-2.19:043:13Waning Gibbous28Sun
29Mon3:2117.93:0518.19:012.99:22-1.59:043:14Waning Gibbous29Mon
30Tue3:5917.73:4917.19:453.010:03-0.49:043:15Waning Gibbous30Tue
31Wed4:4017.44:4015.910:353.310:520.99:043:16Third 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 1:20 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 transitional phase. Tonight's moon is 31% 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 shifting between spring and neap.

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 (31% illuminated). This places Port Graham, AK in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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