Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Thursday, August 6, 2026
The tide is currently rising in Port Graham, AK.
Next low tide (tomorrow) : 3:28 am (2.3 ft)
Next high tide : in 2h 27m at 8:31 pm (15.8 ft)
Sunset today : 10:21 pm
Sunrise tomorrow : 6:05 am
Moon phase : Third Quarter (42% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Oct 1960

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:4416.810:4917.34:090.84:322.56:135:40Waxing Gibbous1Sat
2Sun11:3018.311:4118.65:00-0.35:220.56:155:37Waxing Gibbous2Sun
3Mon12:1019.55:44-1.26:06-1.26:185:34Full Moon3Mon
4Tue12:2719.412:4820.26:24-1.56:47-2.36:205:31Full Moon4Tue
5Wed1:1019.81:2320.57:02-1.47:26-2.86:225:28Full Moon5Wed
6Thu1:5019.61:5720.37:39-0.78:04-2.66:255:25Waning Gibbous6Thu
7Fri2:3018.92:3019.58:150.48:41-1.86:275:22Waning Gibbous7Fri
8Sat3:0917.93:0318.48:521.89:19-0.56:295:19Waning Gibbous8Sat
9Sun3:4916.53:3717.09:293.59:591.16:325:16Waning Gibbous9Sun
10Mon4:3314.94:1515.410:105.210:442.76:345:13Third Quarter10Mon
11Tue5:2513.55:0113.910:596.811:404.26:365:10Third Quarter11Tue
12Wed6:3412.46:0612.612:057.96:395:08Third Quarter12Wed
13Thu8:0112.27:3612.112:545.11:348.26:415:05Third Quarter13Thu
14Fri9:1612.99:0412.62:205.23:047.36:445:02Waning Crescent14Fri
15Sat10:0714.010:0513.73:294.44:025.76:464:59Waning Crescent15Sat
16Sun10:4515.310:5215.14:163.44:433.96:484:56Waning Crescent16Sun
17Mon11:1816.611:3316.54:542.35:192.06:514:53Waning Crescent17Mon
18Tue11:4917.95:291.35:540.26:534:51New Moon18Tue
19Wed12:1217.712:2119.16:040.66:29-1.36:564:48New Moon19Wed
20Thu12:5118.612:5420.06:400.17:06-2.56:584:45New Moon20Thu
21Fri1:3119.11:2820.67:170.17:44-3.17:004:42New Moon21Fri
22Sat2:1219.22:0520.67:550.58:23-3.17:034:40Waxing Crescent22Sat
23Sun2:5518.72:4420.18:361.49:07-2.57:054:37Waxing Crescent23Sun
24Mon3:4117.73:2719.09:212.69:55-1.37:084:34Waxing Crescent24Mon
25Tue4:3516.54:1817.610:124.010:510.27:104:31First Quarter25Tue
26Wed5:3915.45:2216.011:155.311:581.67:134:29First Quarter26Wed
27Thu6:5514.86:4314.712:335.97:154:26First Quarter27Thu
28Fri8:1515.18:1614.51:172.42:015.47:184:24First Quarter28Fri
29Sat9:2316.19:3615.32:372.53:203.97:204:21Waxing Gibbous29Sat
30Sun10:1817.310:3916.43:432.04:212.07:234:18Waxing Gibbous30Sun
31Mon11:0318.411:3017.44:361.45:090.27:254:16Waxing Gibbous31Mon
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 11:59 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 42% 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 Third Quarter (42% 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