Tides Today & Tomorrow in Johnstone Point, AK

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Johnstone Point, AK.
Next low tide (tomorrow) : 12:29 am (1.6 ft)
Next high tide : in 1h 37m at 5:41 pm (11.1 ft)
Sunset today : 9:33 pm
Sunrise tomorrow : 6:07 am
Moon phase : First Quarter (38% illuminated)
Tide Station Location : Station #9454319
Common Questions About Tides

Johnstone Point, AK Tides - May 1935

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:1210.911:0413.54:57-1.95:000.73:427:44New Moon1Wed
2Thu12:0211.05:41-2.85:421.03:397:47New Moon2Thu
3Fri12:4910.96:24-3.16:241.53:367:49New Moon3Fri
4Sat12:2313.61:3410.67:06-3.07:072.13:347:52Waxing Crescent4Sat
5Sun1:0113.12:1810.17:49-2.47:502.83:317:54Waxing Crescent5Sun
6Mon1:3912.43:049.48:33-1.68:353.53:287:57Waxing Crescent6Mon
7Tue2:1911.43:558.79:19-0.69:234.13:257:59Waxing Crescent7Tue
8Wed3:0310.34:578.210:070.310:174.53:238:02First Quarter8Wed
9Thu4:009.26:038.110:581.211:204.73:208:04First Quarter9Thu
10Fri5:208.37:018.311:531.93:188:07First Quarter10Fri
11Sat6:407.97:488.812:334.612:532.43:158:09First Quarter11Sat
12Sun7:487.98:289.51:553.91:542.63:128:12Waxing Gibbous12Sun
13Mon8:478.19:0310.13:002.82:492.73:108:14Waxing Gibbous13Mon
14Tue9:398.59:3810.83:461.63:342.73:078:17Waxing Gibbous14Tue
15Wed10:279.010:1111.54:240.44:142.63:058:19Waxing Gibbous15Wed
16Thu11:129.410:4612.05:00-0.64:522.63:038:22Full Moon16Thu
17Fri11:559.711:2112.55:36-1.45:292.63:008:24Full Moon17Fri
18Sat12:379.96:13-2.06:082.72:588:27Full Moon18Sat
19Sun1:199.96:53-2.36:482.82:568:29Full Moon19Sun
20Mon12:3612.82:029.87:34-2.47:313.02:538:31Waning Gibbous20Mon
21Tue1:1612.62:479.68:19-2.38:193.12:518:34Waning Gibbous21Tue
22Wed2:0012.13:399.49:06-1.99:113.32:498:36Waning Gibbous22Wed
23Thu2:5011.34:379.39:55-1.310:103.32:478:38Third Quarter23Thu
24Fri3:5310.25:409.610:48-0.611:163.12:458:40Third Quarter24Fri
25Sat5:169.36:3810.111:440.32:438:43Third Quarter25Sat
26Sun6:418.87:3110.912:292.612:441.02:418:45Third Quarter26Sun
27Mon7:578.78:1911.61:461.71:481.72:398:47Waning Crescent27Mon
28Tue9:068.99:0612.32:560.42:502.12:378:49Waning Crescent28Tue
29Wed10:099.39:5112.83:54-0.93:462.32:358:51Waning Crescent29Wed
30Thu11:079.610:3613.04:43-1.94:362.42:348:53New Moon30Thu
31Fri11:599.911:1913.15:27-2.55:222.52:328:55New Moon31Fri
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 9:05 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 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 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 (38% 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