Tides Today & Tomorrow in Ketchikan, AK

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Ketchikan, AK.
Next low tide : 10:52 am (2.7 ft)
Next high tide : in 1h 41m at 5:05 am (12.7 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 5:26 am
Moon phase : First Quarter (38% illuminated)
Tide Station Location : Station #9450460
Common Questions About Tides

Ketchikan, AK Tides - Sep 1948

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:1614.310:0417.13:49-1.63:552.73:525:39New Moon1Wed
2Thu10:5715.710:5418.04:34-2.74:431.03:545:37New Moon2Thu
3Fri11:3716.811:4218.35:16-3.45:29-0.43:565:34New Moon3Fri
4Sat12:1517.65:56-3.46:14-1.43:585:32New Moon4Sat
5Sun12:2818.012:5318.06:35-2.86:59-1.84:005:29Waxing Crescent5Sun
6Mon1:1417.21:3217.87:15-1.57:45-1.54:025:27Waxing Crescent6Mon
7Tue2:0115.82:1117.17:540.28:33-0.74:045:24Waxing Crescent7Tue
8Wed2:5114.22:5316.08:372.19:270.54:065:22First Quarter8Wed
9Thu3:4912.53:4014.79:244.110:321.74:075:19First Quarter9Thu
10Fri5:0411.24:4213.410:265.811:532.64:095:16First Quarter10Fri
11Sat6:4210.76:0612.611:556.84:115:14First Quarter11Sat
12Sun8:1211.27:3512.71:222.71:336.64:135:11Waxing Gibbous12Sun
13Mon9:1212.08:4213.32:322.12:435.74:155:09Waxing Gibbous13Mon
14Tue9:5412.99:3114.13:231.43:314.54:175:06Waxing Gibbous14Tue
15Wed10:2713.710:1114.84:010.74:093.44:195:03Waxing Gibbous15Wed
16Thu10:5514.410:4615.34:340.24:432.34:215:01Full Moon16Thu
17Fri11:2215.011:1915.65:02-0.15:141.44:234:58Full Moon17Fri
18Sat11:4715.511:5115.65:29-0.25:450.74:244:56Full Moon18Sat
19Sun12:1215.85:550.06:150.34:264:53Full Moon19Sun
20Mon12:2215.412:3615.96:210.66:450.14:284:50Waning Gibbous20Mon
21Tue12:5514.91:0115.86:471.37:180.24:304:48Waning Gibbous21Tue
22Wed1:3014.21:2815.57:142.37:530.54:324:45Waning Gibbous22Wed
23Thu2:0813.31:5915.17:453.48:351.24:344:43Waning Gibbous23Thu
24Fri2:5312.32:3714.48:214.69:281.94:364:40Third Quarter24Fri
25Sat3:5411.23:3013.79:105.810:412.54:384:37Third Quarter25Sat
26Sun5:2010.64:5113.010:266.84:404:35Third Quarter26Sun
27Mon6:5911.06:3113.212:112.412:156.84:424:32Third Quarter27Mon
28Tue8:1212.27:5414.21:321.51:475.54:444:30Waning Crescent28Tue
29Wed9:0513.88:5815.62:340.22:513.64:454:27Waning Crescent29Wed
30Thu9:4815.49:5216.73:24-1.03:431.54:474:24Waning Crescent30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9450460)

Common Questions About Ketchikan, AK Tides

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What time does the tide turn (slack tide) in Ketchikan, AK today?

Slack tide in Ketchikan, AK is approximately 7:58 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 Ketchikan, AK?

Ketchikan, AK is currently in a transitional phase. Tonight's moon is 38% 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 Ketchikan, 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 Ketchikan, AK?

Tide predictions for Ketchikan, 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 Ketchikan, AK?

Tide data for Ketchikan, AK is sourced from NOAA Station #9450460. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9450460.

What is the moon phase in Ketchikan, AK tonight?

Tonight the moon over Ketchikan, AK is First Quarter (38% illuminated). This places Ketchikan, 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