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 4h 15m at 2:35 am (2.9 ft)
Next high tide : 9:39 am (7.0 ft)
Sunset today : 9:27 pm
Sunrise tomorrow : 6:12 am
Moon phase : First Quarter (57% illuminated)
Tide Station Location : Station #9454319
Common Questions About Tides

Johnstone Point, AK Tides - May 1931

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:4411.411:3613.95:30-2.55:320.33:427:44Full Moon1Fri
2Sat12:3411.36:14-3.36:140.93:397:47Full Moon2Sat
3Sun12:1414.01:2111.06:57-3.46:561.73:367:49Waning Gibbous3Sun
4Mon12:5113.72:0710.47:41-3.07:392.53:347:52Waning Gibbous4Mon
5Tue1:2913.02:569.68:26-2.28:243.43:317:54Waning Gibbous5Tue
6Wed2:0812.03:528.89:14-1.19:124.23:287:57Waning Gibbous6Wed
7Thu2:5110.85:008.210:050.010:074.83:267:59Third Quarter7Thu
8Fri3:479.56:158.011:011.011:125.23:238:02Third Quarter8Fri
9Sat5:128.57:198.212:031.73:208:04Third Quarter9Sat
10Sun6:418.18:088.712:315.11:122.13:188:07Third Quarter10Sun
11Mon7:518.18:479.32:024.42:162.23:158:09Waning Crescent11Mon
12Tue8:508.39:2010.03:093.23:062.23:138:12Waning Crescent12Tue
13Wed9:408.69:5110.73:522.03:462.13:108:14Waning Crescent13Wed
14Thu10:269.010:2011.34:280.84:212.23:088:17Waning Crescent14Thu
15Fri11:099.310:5011.85:01-0.24:552.33:058:19New Moon15Fri
16Sat11:509.611:2112.25:34-1.05:292.53:038:22New Moon16Sat
17Sun12:309.76:09-1.66:032.83:008:24New Moon17Sun
18Mon1:099.76:45-1.96:403.12:588:26New Moon18Mon
19Tue12:2612.51:509.57:24-2.07:193.42:568:29Waxing Crescent19Tue
20Wed1:0212.42:339.18:07-1.98:023.82:538:31Waxing Crescent20Wed
21Thu1:4112.13:248.78:53-1.68:504.12:518:34Waxing Crescent21Thu
22Fri2:2511.44:268.59:42-1.19:474.32:498:36Waxing Crescent22Fri
23Sat3:2110.55:348.610:36-0.610:534.22:478:38First Quarter23Sat
24Sun4:409.66:369.211:330.02:458:40First Quarter24Sun
25Mon6:129.17:2810.012:073.712:340.52:438:43First Quarter25Mon
26Tue7:319.08:1511.01:262.71:370.92:418:45Waxing Gibbous26Tue
27Wed8:419.18:5911.92:391.32:371.32:398:47Waxing Gibbous27Wed
28Thu9:459.59:4212.73:39-0.33:321.52:378:49Waxing Gibbous28Thu
29Fri10:449.810:2413.24:29-1.74:221.82:358:51Full Moon29Fri
30Sat11:3910.111:0613.45:15-2.65:082.12:348:53Full Moon30Sat
31Sun12:3010.25:59-3.15:522.52:328:55Full Moon31Sun
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 6:07 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 57% 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 (57% 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