Tides Today & Tomorrow in Johnstone Point, AK

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Johnstone Point, AK.
Next low tide : in 2h 09m at 2:07 pm (6.0 ft)
Next high tide : 8:43 pm (9.5 ft)
Sunset today : 9:24 pm
Sunrise tomorrow : 6:14 am
Moon phase : First Quarter (66% illuminated)
Tide Station Location : Station #9454319
Common Questions About Tides

Johnstone Point, AK Tides - Oct 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:1512.411:2112.84:56-0.85:160.55:525:19New Moon1Tue
2Wed11:4913.05:33-0.85:57-0.55:545:16New Moon2Wed
3Thu12:0512.812:2113.46:09-0.46:36-1.05:575:13New Moon3Thu
4Fri12:4712.412:5013.46:440.47:15-1.15:595:10Waxing Crescent4Fri
5Sat1:2611.91:1813.27:191.47:53-0.86:025:07Waxing Crescent5Sat
6Sun2:0511.11:4412.77:552.58:33-0.26:045:04Waxing Crescent6Sun
7Mon2:4410.22:1212.08:313.79:140.76:075:01Waxing Crescent7Mon
8Tue3:309.22:4211.19:104.810:001.76:094:58First Quarter8Tue
9Wed4:358.33:2110.29:545.810:552.66:114:55First Quarter9Wed
10Thu6:107.94:349.210:536.56:144:52First Quarter10Thu
11Fri7:378.16:308.912:043.212:146.86:164:49First Quarter11Fri
12Sat8:368.77:509.21:313.21:576.36:194:46Waxing Gibbous12Sat
13Sun9:189.48:499.82:472.73:115.16:214:43Waxing Gibbous13Sun
14Mon9:5110.39:3810.53:342.03:543.86:244:40Waxing Gibbous14Mon
15Tue10:2111.110:2211.24:101.34:302.36:264:37Waxing Gibbous15Tue
16Wed10:5012.011:0311.74:420.95:041.06:294:34Full Moon16Wed
17Thu11:1912.811:4412.05:140.75:39-0.26:324:31Full Moon17Thu
18Fri11:4813.55:470.86:16-1.16:344:28Full Moon18Fri
19Sat12:2412.112:1814.06:211.26:54-1.76:374:25Full Moon19Sat
20Sun1:0611.912:5014.26:571.87:36-1.86:394:22Waning Gibbous20Sun
21Mon1:4911.41:2414.07:372.78:21-1.56:424:19Waning Gibbous21Mon
22Tue2:3610.62:0213.48:203.69:11-0.96:444:17Waning Gibbous22Tue
23Wed3:359.72:4812.59:104.610:070.06:474:14Third Quarter23Wed
24Thu4:579.13:5411.310:105.411:120.86:494:11Third Quarter24Thu
25Fri6:299.15:3610.511:265.86:524:08Third Quarter25Fri
26Sat7:439.77:1210.312:261.412:575.56:554:05Third Quarter26Sat
27Sun8:4010.68:2710.71:461.42:304.36:574:02Waning Crescent27Sun
28Mon9:2511.59:2811.12:541.23:342.77:004:00Waning Crescent28Mon
29Tue10:0512.410:2211.53:450.94:221.17:033:57Waning Crescent29Tue
30Wed10:4013.011:1011.74:270.95:02-0.17:053:54New Moon30Wed
31Thu11:1213.511:5411.75:041.15:40-1.07:083:52New Moon31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9454319)

Common Questions About Johnstone Point, AK Tides

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

Slack tide in Johnstone Point, AK is approximately 5:25 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 Johnstone Point, AK?

Johnstone Point, 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 Johnstone Point, 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 Johnstone Point, AK?

Tide predictions for Johnstone Point, 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 Johnstone Point, AK?

Tide data for Johnstone Point, AK is sourced from NOAA Station #9454319. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9454319.

What is the moon phase in Johnstone Point, AK tonight?

Tonight the moon over Johnstone Point, AK is First Quarter (66% illuminated). This places Johnstone Point, 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