Tides Today & Tomorrow in Nonopapa, Niihau Island, HI

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in Nonopapa, Niihau Island, HI.
Next low tide : 3:40 pm (0.6 ft)
Next high tide : in 4h 42m at 10:39 am (0.9 ft)
Sunset today : 7:26 pm
Sunrise tomorrow : 5:58 am
Moon phase : First Quarter (50% illuminated)
Tide Station Location : Station #1610367
Common Questions About Tides

Nonopapa, Niihau Island, HI Tides - Oct 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:420.712:421.55:360.37:520.26:326:28Waning Crescent1Fri
2Sat1:170.81:211.66:320.38:160.26:326:27Waning Crescent2Sat
3Sun1:510.91:571.67:220.28:410.16:336:26Waning Crescent3Sun
4Mon2:271.12:321.68:110.29:060.16:336:25New Moon4Mon
5Tue3:051.33:061.59:010.29:310.06:336:24New Moon5Tue
6Wed3:451.43:421.39:540.29:580.06:346:23New Moon6Wed
7Thu4:281.64:181.210:500.310:250.06:346:22New Moon7Thu
8Fri5:151.74:561.011:530.310:550.06:346:21Waxing Crescent8Fri
9Sat6:061.75:380.81:070.46:356:21Waxing Crescent9Sat
10Sun7:051.76:320.62:370.46:356:20Waxing Crescent10Sun
11Mon8:141.78:120.512:090.14:220.46:356:19First Quarter11Mon
12Tue9:291.710:230.51:050.25:480.36:366:18First Quarter12Tue
13Wed10:411.611:510.62:380.36:370.26:366:17First Quarter13Wed
14Thu11:431.64:230.47:110.26:366:16First Quarter14Thu
15Fri12:440.812:341.65:450.47:390.16:376:15Waxing Gibbous15Fri
16Sat1:260.91:171.56:490.38:030.16:376:15Waxing Gibbous16Sat
17Sun2:021.11:541.47:430.38:250.16:376:14Waxing Gibbous17Sun
18Mon2:371.32:271.38:320.38:460.16:386:13Full Moon18Mon
19Tue3:101.42:581.29:180.39:070.16:386:12Full Moon19Tue
20Wed3:421.53:271.110:030.39:280.16:396:11Full Moon20Wed
21Thu4:151.63:550.910:480.49:490.16:396:11Full Moon21Thu
22Fri4:481.64:220.811:360.410:110.16:406:10Waning Gibbous22Fri
23Sat5:231.64:500.712:290.46:406:09Waning Gibbous23Sat
24Sun6:011.55:190.61:320.46:416:09Waning Gibbous24Sun
25Mon6:471.56:000.52:500.46:416:08Waning Gibbous25Mon
26Tue7:451.48:000.44:210.46:416:07Third Quarter26Tue
27Wed8:541.410:410.512:040.45:270.36:426:07Third Quarter27Wed
28Thu10:021.411:450.61:330.46:040.26:426:06Third Quarter28Thu
29Fri11:011.43:370.56:320.26:436:05Third Quarter29Fri
30Sat12:230.711:49 AM1.45:050.46:570.16:436:05Waning Crescent30Sat
31Sun12:580.912:321.46:130.47:210.16:446:04Waning Crescent31Sun
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 1:09 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 Nonopapa, Niihau Island, HI?

Nonopapa, Niihau Island, HI is currently in a neap phase. Tonight's moon is 50% 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 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 First Quarter (50% illuminated). This places Nonopapa, Niihau Island, HI 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