Tides Today & Tomorrow in Nonopapa, Niihau Island, HI

TIDE TIMES for Saturday, August 22, 2026
The tide is currently falling in Nonopapa, Niihau Island, HI.
Next low tide : in 3h 41m at 4:57 am (0.3 ft)
Next high tide : 12:54 pm (1.5 ft)
Sunset today : 7:06 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Gibbous (75% illuminated)
Tide Station Location : Station #1610367
Common Questions About Tides

Nonopapa, Niihau Island, HI Tides - Dec 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:021.82:320.510:270.37:58-0.16:335:27Full Moon1Fri
2Sat3:351.73:090.511:050.28:310.06:335:27Full Moon2Sat
3Sun4:101.73:470.411:440.29:040.06:345:27Full Moon3Sun
4Mon4:461.74:280.412:250.26:355:27Waning Gibbous4Mon
5Tue5:231.65:170.41:090.26:355:27Waning Gibbous5Tue
6Wed6:011.56:250.41:540.26:365:27Waning Gibbous6Wed
7Thu6:411.57:570.52:370.26:375:28Waning Gibbous7Thu
8Fri7:221.49:300.63:140.16:375:28Third Quarter8Fri
9Sat8:071.210:360.81:100.53:480.16:385:28Third Quarter9Sat
10Sun8:561.111:241.13:090.64:180.06:395:28Third Quarter10Sun
11Mon9:501.04:560.64:480.06:395:29Third Quarter11Mon
12Tue12:051.310:47 AM0.86:240.55:20-0.16:405:29Waning Crescent12Tue
13Wed12:461.511:45 AM0.77:370.45:55-0.26:405:29Waning Crescent13Wed
14Thu1:271.812:420.68:370.36:34-0.26:415:30Waning Crescent14Thu
15Fri2:111.91:370.59:320.27:16-0.36:425:30New Moon15Fri
16Sat2:552.02:310.510:220.18:02-0.36:425:30New Moon16Sat
17Sun3:412.13:260.411:100.18:49-0.36:435:31New Moon17Sun
18Mon4:272.04:230.411:570.09:38-0.26:435:31Waxing Crescent18Mon
19Tue5:131.95:260.512:430.06:445:32Waxing Crescent19Tue
20Wed6:001.86:390.51:280.06:445:32Waxing Crescent20Wed
21Thu6:461.68:020.72:110.06:455:33Waxing Crescent21Thu
22Fri7:321.49:270.812:410.42:520.06:455:33First Quarter22Fri
23Sat8:201.110:401.12:180.53:310.06:465:34First Quarter23Sat
24Sun9:130.911:371.34:160.64:070.06:465:34First Quarter24Sun
25Mon10:130.76:170.64:430.06:475:35Waxing Gibbous25Mon
26Tue12:231.411:15 AM0.67:480.55:180.06:475:35Waxing Gibbous26Tue
27Wed1:021.512:140.58:450.35:54-0.16:485:36Waxing Gibbous27Wed
28Thu1:391.61:050.49:230.36:31-0.16:485:37Waxing Gibbous28Thu
29Fri2:141.71:490.49:540.27:09-0.16:485:37Full Moon29Fri
30Sat2:481.72:280.410:210.27:46-0.16:495:38Full Moon30Sat
31Sun3:221.73:030.410:490.18:25-0.16:495:38Full Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (1610367)

Common Questions About Nonopapa, Niihau Island, HI Tides

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What time does the tide turn (slack tide) in Nonopapa, Niihau Island, HI today?

Slack tide in Nonopapa, Niihau Island, HI is approximately 8:55 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 Nonopapa, Niihau Island, HI?

Nonopapa, Niihau Island, HI is currently in a transitional phase. Tonight's moon is 75% 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 Nonopapa, Niihau Island, HI 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 Nonopapa, Niihau Island, HI?

Tide predictions for Nonopapa, Niihau Island, HI 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 Nonopapa, Niihau Island, HI?

Tide data for Nonopapa, Niihau Island, HI is sourced from NOAA Station #1610367. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=1610367.

What is the moon phase in Nonopapa, Niihau Island, HI tonight?

Tonight the moon over Nonopapa, Niihau Island, HI is Waxing Gibbous (75% illuminated). This places Nonopapa, Niihau Island, HI 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