Tides Today & Tomorrow in Nonopapa, Niihau Island, HI

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Nonopapa, Niihau Island, HI.
Next low tide : in 9h 29m at 4:33 am (0.1 ft)
Next high tide : 12:42 pm (1.5 ft)
Sunset today : 7:25 pm
Sunrise tomorrow : 6:09 am
Moon phase : First Quarter (64% illuminated)
Tide Station Location : Station #1610367
Common Questions About Tides

Nonopapa, Niihau Island, HI Tides - Oct 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:481.12:561.58:380.29:250.16:326:28Full Moon1Fri
2Sat3:231.23:281.49:230.29:510.16:326:27Full Moon2Sat
3Sun4:011.44:011.310:100.210:160.16:326:26Full Moon3Sun
4Mon4:411.54:351.211:020.310:440.16:336:26Waning Gibbous4Mon
5Tue5:261.55:111.012:020.46:336:25Waning Gibbous5Tue
6Wed6:161.65:520.81:130.46:336:24Waning Gibbous6Wed
7Thu7:161.66:490.72:430.56:346:23Waning Gibbous7Thu
8Fri8:271.68:310.612:330.24:240.46:346:22Third Quarter8Fri
9Sat9:431.610:290.61:370.35:450.36:346:21Third Quarter9Sat
10Sun10:541.611:500.73:100.36:360.26:356:20Third Quarter10Sun
11Mon11:541.64:430.37:130.26:356:19Waning Crescent11Mon
12Tue12:450.812:441.65:590.37:450.16:356:18Waning Crescent12Tue
13Wed1:301.01:291.67:010.38:130.16:366:18Waning Crescent13Wed
14Thu2:111.22:081.57:570.28:400.16:366:17Waning Crescent14Thu
15Fri2:501.32:451.48:480.29:060.06:376:16New Moon15Fri
16Sat3:281.53:201.39:370.39:300.06:376:15New Moon16Sat
17Sun4:051.53:531.110:250.39:550.16:376:14New Moon17Sun
18Mon4:421.64:251.011:140.310:190.16:386:13Waxing Crescent18Mon
19Tue5:191.64:570.812:060.46:386:13Waxing Crescent19Tue
20Wed6:001.65:310.71:040.46:396:12Waxing Crescent20Wed
21Thu6:441.56:140.62:120.46:396:11Waxing Crescent21Thu
22Fri7:381.47:370.53:340.46:396:10First Quarter22Fri
23Sat8:441.410:030.512:160.44:540.46:406:10First Quarter23Sat
24Sun9:531.311:320.61:280.55:470.36:406:09First Quarter24Sun
25Mon10:551.33:240.56:220.26:416:08First Quarter25Mon
26Tue12:180.711:45 AM1.44:530.56:510.26:416:08First Quarter26Tue
27Wed12:520.812:271.45:590.47:170.16:426:07Waxing Gibbous27Wed
28Thu1:231.01:051.46:540.47:420.16:426:06Waxing Gibbous28Thu
29Fri1:551.21:411.37:450.38:070.06:436:06Waxing Gibbous29Fri
30Sat2:291.32:171.28:350.38:330.06:436:05Full Moon30Sat
31Sun3:051.52:531.19:250.39:000.06:446:04Full 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 8:37 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 64% 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 First Quarter (64% 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