Tides Today & Tomorrow in Johnstone Point, AK

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Johnstone Point, AK.
Next low tide : 12:17 pm (3.9 ft)
Next high tide : in 28m at 6:40 am (8.0 ft)
Sunset today : 9:30 pm
Sunrise tomorrow : 6:09 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9454319
Common Questions About Tides

Johnstone Point, AK Tides - Oct 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:4212.110:4912.14:240.04:451.15:525:19Full Moon1Sun
2Mon11:1512.711:3412.25:02-0.15:25-0.15:545:16Full Moon2Mon
3Tue11:4613.25:370.26:03-0.85:575:13Full Moon3Tue
4Wed12:1512.112:1513.46:110.76:40-1.15:595:10Full Moon4Wed
5Thu12:5311.712:4313.36:441.57:16-1.06:025:07Waning Gibbous5Thu
6Fri1:3011.21:0913.07:182.47:53-0.66:045:04Waning Gibbous6Fri
7Sat2:0610.51:3612.57:523.48:320.16:075:01Waning Gibbous7Sat
8Sun2:439.62:0511.88:284.49:131.06:094:58Waning Gibbous8Sun
9Mon3:288.82:3710.99:065.310:002.06:124:55Third Quarter9Mon
10Tue4:378.03:2110.09:536.110:562.76:144:52Third Quarter10Tue
11Wed6:177.74:469.110:566.66:174:49Third Quarter11Wed
12Thu7:368.16:378.912:053.212:226.76:194:46Third Quarter12Thu
13Fri8:288.77:519.31:243.11:595.96:224:43Waning Crescent13Fri
14Sat9:069.68:489.92:332.63:064.66:244:40Waning Crescent14Sat
15Sun9:3810.69:3810.63:202.03:503.16:274:37Waning Crescent15Sun
16Mon10:0811.610:2311.23:581.54:271.56:294:34Waning Crescent16Mon
17Tue10:3812.611:0711.74:331.25:040.16:324:31New Moon17Tue
18Wed11:0913.511:5112.05:081.15:42-1.16:344:28New Moon18Wed
19Thu11:4114.15:441.36:21-2.06:374:25New Moon19Thu
20Fri12:3512.012:1514.56:221.87:03-2.36:394:22Waxing Crescent20Fri
21Sat1:2011.712:5214.57:022.47:47-2.26:424:19Waxing Crescent21Sat
22Sun2:0711.11:3114.17:453.28:36-1.66:444:17Waxing Crescent22Sun
23Mon3:0010.32:1613.38:334.09:29-0.76:474:14Waxing Crescent23Mon
24Tue4:089.63:1112.19:294.810:290.36:504:11First Quarter24Tue
25Wed5:329.24:3410.810:375.411:371.16:524:08First Quarter25Wed
26Thu6:529.66:1710.211:585.46:554:05First Quarter26Thu
27Fri7:5510.37:4110.112:511.61:314.76:574:02Waxing Gibbous27Fri
28Sat8:4511.18:4910.42:051.72:533.37:004:00Waxing Gibbous28Sat
29Sun9:2712.09:4710.73:051.73:481.87:033:57Waxing Gibbous29Sun
30Mon10:0312.610:3810.93:511.74:310.57:053:54Waxing Gibbous30Mon
31Tue10:3713.111:2311.14:311.95:09-0.57:083:51Full Moon31Tue
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 9:28 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 Johnstone Point, AK?

Johnstone Point, AK is currently in a neap phase. Tonight's moon is 47% 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 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 (47% illuminated). This places Johnstone Point, 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