Tides Today & Tomorrow in Nonopapa, Niihau Island, HI

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Nonopapa, Niihau Island, HI.
Next low tide (tomorrow) : 4:33 am (0.1 ft)
Next high tide : in 5h 40m at 11:53 am (1.4 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 - Aug 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:541.05:411.312:040.211:24 AM0.36:147:20Waxing Crescent1Wed
2Thu6:411.06:061.212:320.212:120.56:147:19Waxing Crescent2Thu
3Fri7:371.06:331.11:020.21:130.66:147:19Waxing Crescent3Fri
4Sat8:441.17:020.91:360.22:370.76:157:18First Quarter4Sat
5Sun9:571.27:440.82:160.24:250.76:157:18First Quarter5Sun
6Mon11:041.39:090.73:050.26:120.66:167:17First Quarter6Mon
7Tue11:581.411:000.64:020.27:190.56:167:16First Quarter7Tue
8Wed12:451.65:010.18:010.46:167:16Waxing Gibbous8Wed
9Thu12:140.61:281.75:570.18:360.36:177:15Waxing Gibbous9Thu
10Fri1:120.72:081.86:500.09:090.26:177:14Waxing Gibbous10Fri
11Sat2:020.82:471.97:420.09:420.16:177:14Full Moon11Sat
12Sun2:510.93:261.98:320.010:150.16:187:13Full Moon12Sun
13Mon3:391.04:051.89:230.010:480.06:187:12Full Moon13Mon
14Tue4:291.14:441.710:160.111:220.06:187:11Full Moon14Tue
15Wed5:201.25:231.511:130.211:570.06:197:11Waning Gibbous15Wed
16Thu6:161.36:031.312:160.46:197:10Waning Gibbous16Thu
17Fri7:181.46:461.112:350.01:320.56:197:09Waning Gibbous17Fri
18Sat8:281.47:390.91:170.13:070.66:207:08Third Quarter18Sat
19Sun9:441.58:590.72:060.15:040.66:207:08Third Quarter19Sun
20Mon10:571.510:370.63:060.26:450.56:207:07Third Quarter20Mon
21Tue11:591.611:580.74:150.27:400.46:217:06Waning Crescent21Tue
22Wed12:511.65:220.28:160.36:217:05Waning Crescent22Wed
23Thu12:560.71:341.76:210.28:440.36:217:04Waning Crescent23Thu
24Fri1:420.82:111.67:110.29:080.36:227:03Waning Crescent24Fri
25Sat2:210.92:451.67:560.19:300.26:227:03New Moon25Sat
26Sun2:571.03:151.68:370.29:530.26:227:02New Moon26Sun
27Mon3:321.03:441.59:160.210:160.26:237:01New Moon27Mon
28Tue4:071.14:111.49:560.210:390.26:237:00New Moon28Tue
29Wed4:411.24:371.310:360.311:030.26:236:59Waxing Crescent29Wed
30Thu5:181.25:021.211:190.411:280.26:236:58Waxing Crescent30Thu
31Fri5:581.25:271.112:070.56:246:57Waxing Crescent31Fri
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 8:13 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 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