Tides Today & Tomorrow in Port Graham, AK

TIDE TIMES for Thursday, August 6, 2026
The tide is currently falling in Port Graham, AK.
Next low tide : in 4h 00m at 2:06 pm (5.6 ft)
Next high tide : 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 - Jul 1961

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:4819.83:4918.59:09-4.79:290.82:569:25Waning Gibbous1Sat
2Sun3:3818.84:3718.09:56-3.410:231.32:579:24Waning Gibbous2Sun
3Mon4:3317.25:2917.410:47-1.811:231.92:589:24Third Quarter3Mon
4Tue5:3315.56:2416.711:410.12:599:23Third Quarter4Tue
5Wed6:4313.97:2416.112:292.312:411.93:019:22Third Quarter5Wed
6Thu8:0213.08:2615.91:422.31:473.43:029:21Third Quarter6Thu
7Fri9:2312.99:2716.02:571.82:564.23:049:20Waning Crescent7Fri
8Sat10:3413.410:2216.34:031.04:014.53:059:19Waning Crescent8Sat
9Sun11:3114.211:1116.64:580.04:554.33:079:17Waning Crescent9Sun
10Mon12:1815.05:43-0.85:423.93:089:16New Moon10Mon
11Tue12:5915.66:22-1.46:243.53:109:15New Moon11Tue
12Wed12:3417.31:3616.16:58-1.97:033.13:119:13New Moon12Wed
13Thu1:1117.52:1016.47:33-2.17:402.83:139:12New Moon13Thu
14Fri1:4717.52:4316.58:06-2.08:162.73:159:10Waxing Crescent14Fri
15Sat2:2317.23:1616.38:39-1.68:532.83:179:09Waxing Crescent15Sat
16Sun2:5816.63:4816.09:13-0.99:303.13:199:07Waxing Crescent16Sun
17Mon3:3515.74:2215.59:470.010:103.63:219:05Waxing Crescent17Mon
18Tue4:1414.64:5715.010:231.210:544.03:239:03Waxing Crescent18Tue
19Wed4:5913.45:3614.611:032.511:454.33:249:02First Quarter19Wed
20Thu5:5312.36:2314.411:493.83:269:00First Quarter20Thu
21Fri7:0211.67:1714.412:464.412:464.93:298:58First Quarter21Fri
22Sat8:2311.58:1914.81:563.81:555.53:318:56Waxing Gibbous22Sat
23Sun9:4112.39:2315.73:072.63:075.43:338:54Waxing Gibbous23Sun
24Mon10:4513.710:2217.04:090.94:114.63:358:52Waxing Gibbous24Mon
25Tue11:4015.311:1718.45:03-1.05:083.43:378:50Waxing Gibbous25Tue
26Wed12:2916.95:52-2.86:002.03:398:47Full Moon26Wed
27Thu12:0919.71:1418.36:38-4.36:490.73:418:45Full Moon27Thu
28Fri1:0020.61:5819.37:22-5.27:36-0.43:438:43Full Moon28Fri
29Sat1:4920.92:4119.88:06-5.48:24-0.93:468:41Waning Gibbous29Sat
30Sun2:3720.63:2519.88:50-4.89:12-0.93:488:38Waning Gibbous30Sun
31Mon3:2619.54:0919.39:35-3.410:02-0.43:508:36Waning 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 5:18 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