Tides Today & Tomorrow in Nonopapa, Niihau Island, HI

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in Nonopapa, Niihau Island, HI.
Next low tide : in 3h 32m at 3:40 pm (0.6 ft)
Next high tide : 9:13 pm (1.1 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 - May 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:220.38:181.53:080.112:070.06:087:07Waning Gibbous1Sat
2Sun9:170.39:271.44:300.01:120.26:087:07Third Quarter2Sun
3Mon11:070.410:331.35:330.02:580.36:077:07Third Quarter3Mon
4Tue12:130.66:160.04:430.36:067:08Third Quarter4Tue
5Wed12:570.76:47-0.16:050.36:067:08Waning Crescent5Wed
6Thu12:201.21:340.97:12-0.17:090.36:057:09Waning Crescent6Thu
7Fri1:011.12:061.17:34-0.18:040.36:057:09Waning Crescent7Fri
8Sat1:381.02:371.27:55-0.18:520.26:047:10Waning Crescent8Sat
9Sun2:100.93:081.48:16-0.19:380.26:047:10New Moon9Sun
10Mon2:420.83:381.48:37-0.110:220.26:037:10New Moon10Mon
11Tue3:120.74:081.59:00-0.111:060.26:037:11New Moon11Tue
12Wed3:420.64:401.59:23-0.111:520.26:027:11New Moon12Wed
13Thu4:130.55:151.59:47-0.16:027:12Waxing Crescent13Thu
14Fri4:460.45:531.512:420.210:12 AM-0.16:017:12Waxing Crescent14Fri
15Sat5:250.36:361.41:380.210:40 AM0.06:017:13Waxing Crescent15Sat
16Sun6:210.37:271.42:420.211:14 AM0.16:017:13Waxing Crescent16Sun
17Mon8:040.38:241.33:460.112:000.26:007:14First Quarter17Mon
18Tue10:050.39:251.34:400.11:220.36:007:14First Quarter18Tue
19Wed11:190.510:241.35:190.03:190.45:597:14First Quarter19Wed
20Thu12:080.75:520.05:000.45:597:15First Quarter20Thu
21Fri12:511.06:21-0.16:220.35:597:15Waxing Gibbous21Fri
22Sat12:071.11:311.26:50-0.27:330.35:597:16Waxing Gibbous22Sat
23Sun12:551.02:131.57:19-0.28:390.25:587:16Waxing Gibbous23Sun
24Mon1:420.92:551.77:50-0.39:410.15:587:17Full Moon24Mon
25Tue2:290.73:391.98:24-0.310:410.15:587:17Full Moon25Tue
26Wed3:170.64:241.98:59-0.311:410.15:587:18Full Moon26Wed
27Thu4:080.55:111.99:37-0.35:577:18Full Moon27Thu
28Fri5:020.46:001.912:410.010:18 AM-0.25:577:18Waning Gibbous28Fri
29Sat6:060.46:521.71:410.011:02 AM-0.15:577:19Waning Gibbous29Sat
30Sun7:250.37:471.62:420.011:53 AM0.15:577:19Waning Gibbous30Sun
31Mon9:020.48:441.43:400.01:000.35:577:20Third Quarter31Mon
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 6:26 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