Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Saturday, August 22, 2026
The tide is currently rising in Port Graham, AK.
Next low tide : 5:16 am (4.6 ft)
Next high tide (tomorrow) : in 11m at 9:29 pm (12.6 ft)
Sunset today : 9:40 pm
Sunrise tomorrow : 6:39 am
Moon phase : First Quarter (66% illuminated)
Tide Station Location : Station #9455437
Common Questions About Tides

Port Graham, AK Tides - Oct 1935

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:0116.32:4317.98:393.39:070.16:115:42Waxing Crescent1Tue
2Wed3:3915.23:1417.19:124.69:451.26:135:39Waxing Crescent2Wed
3Thu4:2313.93:5116.09:505.910:332.36:155:36First Quarter3Thu
4Fri5:2212.64:4214.810:417.211:383.36:185:34First Quarter4Fri
5Sat6:4512.06:0013.811:588.16:205:31First Quarter5Sat
6Sun8:1712.57:4013.61:043.71:367.86:225:28First Quarter6Sun
7Mon9:2613.99:1014.72:303.03:026.06:255:25Waxing Gibbous7Mon
8Tue10:1615.810:1716.33:371.84:053.56:275:22Waxing Gibbous8Tue
9Wed10:5817.811:1218.04:280.54:560.76:295:19Waxing Gibbous9Wed
10Thu11:3719.65:14-0.65:41-1.86:325:16Full Moon10Thu
11Fri12:0219.312:1521.05:56-1.16:25-3.76:345:13Full Moon11Fri
12Sat12:4920.112:5321.86:37-1.17:07-4.76:375:10Full Moon12Sat
13Sun1:3520.21:3222.07:18-0.57:50-4.86:395:07Waning Gibbous13Sun
14Mon2:2019.72:1121.47:590.68:33-4.06:415:05Waning Gibbous14Mon
15Tue3:0718.52:5220.18:412.19:18-2.46:445:02Waning Gibbous15Tue
16Wed3:5516.93:3518.39:263.810:07-0.36:464:59Waning Gibbous16Wed
17Thu4:5015.24:2316.210:175.611:031.86:494:56Third Quarter17Thu
18Fri5:5613.75:2514.211:197.16:514:53Third Quarter18Fri
19Sat7:1813.06:5112.812:133.512:447.96:534:50Third Quarter19Sat
20Sun8:4213.28:2912.61:404.42:277.46:564:48Third Quarter20Sun
21Mon9:4313.99:4413.23:004.33:416.06:584:45Waning Crescent21Mon
22Tue10:2414.910:3614.13:553.94:284.47:014:42Waning Crescent22Tue
23Wed10:5615.811:1615.14:343.45:032.87:034:39Waning Crescent23Wed
24Thu11:2416.711:5316.05:073.05:341.37:064:37Waning Crescent24Thu
25Fri11:5017.65:372.76:050.17:084:34New Moon25Fri
26Sat12:2716.712:1718.36:082.66:35-0.97:104:31New Moon26Sat
27Sun1:0217.212:4518.86:392.77:06-1.47:134:29New Moon27Sun
28Mon1:3717.31:1518.97:113.07:39-1.67:154:26New Moon28Mon
29Tue2:1217.11:4618.87:453.58:13-1.47:184:23Waxing Crescent29Tue
30Wed2:5016.62:1918.48:204.28:50-0.87:204:21Waxing Crescent30Wed
31Thu3:3015.72:5617.68:585.19:310.17:234:18Waxing Crescent31Thu
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 1:22 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 66% 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 First Quarter (66% 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