Tides Today & Tomorrow in Nonopapa, Niihau Island, HI

TIDE TIMES for Sunday, July 19, 2026
The tide is currently rising in Nonopapa, Niihau Island, HI.
Next low tide : 1:48 pm (0.6 ft)
Next high tide : in 5h 23m at 8:34 am (1.0 ft)
Sunset today : 7:26 pm
Sunrise tomorrow : 6:08 am
Moon phase : First Quarter (35% illuminated)
Tide Station Location : Station #1610367
Common Questions About Tides

Nonopapa, Niihau Island, HI Tides - May 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:571.31:591.17:37-0.27:550.16:087:06Waxing Gibbous1Wed
2Thu1:401.12:411.48:05-0.38:570.16:087:07Waxing Gibbous2Thu
3Fri2:221.03:231.68:33-0.39:580.16:077:07Full Moon3Fri
4Sat3:050.84:071.79:03-0.310:580.16:077:08Full Moon4Sat
5Sun3:480.74:521.89:34-0.36:067:08Full Moon5Sun
6Mon4:330.55:391.812:010.110:07 AM-0.36:057:09Waning Gibbous6Mon
7Tue5:230.46:301.71:070.110:42 AM-0.26:057:09Waning Gibbous7Tue
8Wed6:260.37:261.62:190.111:20 AM-0.16:047:09Waning Gibbous8Wed
9Thu7:590.38:281.53:350.112:080.16:047:10Third Quarter9Thu
10Fri9:580.39:331.34:440.01:230.26:037:10Third Quarter10Fri
11Sat11:300.510:351.25:330.03:160.46:037:11Third Quarter11Sat
12Sun12:220.66:080.04:560.46:027:11Third Quarter12Sun
13Mon1:000.86:340.06:140.46:027:12Waning Crescent13Mon
14Tue12:121.11:331.06:560.07:170.46:017:12Waning Crescent14Tue
15Wed12:511.02:041.27:17-0.18:110.36:017:12Waning Crescent15Wed
16Thu1:260.92:341.37:38-0.19:000.36:017:13Waning Crescent16Thu
17Fri1:580.83:031.47:59-0.19:470.26:007:13New Moon17Fri
18Sat2:300.73:331.58:21-0.110:320.26:007:14New Moon18Sat
19Sun3:020.64:051.68:45-0.111:180.26:007:14New Moon19Sun
20Mon3:350.54:391.69:09-0.15:597:15New Moon20Mon
21Tue4:080.45:161.612:060.29:36 AM-0.15:597:15Waxing Crescent21Tue
22Wed4:460.35:571.612:580.110:05 AM-0.15:597:16Waxing Crescent22Wed
23Thu5:330.36:431.51:550.110:39 AM0.05:587:16Waxing Crescent23Thu
24Fri6:440.37:361.52:560.111:20 AM0.15:587:16Waxing Crescent24Fri
25Sat8:340.38:321.43:510.112:200.25:587:17First Quarter25Sat
26Sun10:170.49:301.44:360.01:560.35:587:17First Quarter26Sun
27Mon11:250.610:261.35:120.03:520.45:577:18First Quarter27Mon
28Tue12:150.95:43-0.15:310.45:577:18First Quarter28Tue
29Wed1:001.26:13-0.16:540.45:577:19Waxing Gibbous29Wed
30Thu12:111.01:431.56:43-0.28:070.35:577:19Waxing Gibbous30Thu
31Fri1:000.92:261.77:14-0.39:140.25:577:19Waxing Gibbous31Fri
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 11:11 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 35% 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 (35% 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