Tides Today & Tomorrow in San Nicolas Island, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in San Nicolas Island, CA.
Next low tide : in 3h 01m at 7:33 am (2.3 ft)
Next high tide : 2:50 pm (4.2 ft)
Sunset today : 7:39 pm
Sunrise tomorrow : 6:23 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9410068
Common Questions About Tides

San Nicolas Island, CA Tides - May 1998

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:114.53:533.28:53-0.28:372.36:097:40First Quarter1Fri
2Sat2:194.05:173.310:070.110:262.36:087:41First Quarter2Sat
3Sun3:443.66:173.611:180.311:592.16:077:41First Quarter3Sun
4Mon5:123.56:593.812:160.46:067:42First Quarter4Mon
5Tue6:233.57:314.01:021.61:020.56:057:43Waxing Gibbous5Tue
6Wed7:183.57:574.21:481.21:390.66:047:44Waxing Gibbous6Wed
7Thu8:033.68:214.42:250.82:090.76:047:44Waxing Gibbous7Thu
8Fri8:433.68:434.62:570.52:360.96:037:45Waxing Gibbous8Fri
9Sat9:193.69:064.83:280.23:011.06:027:46Full Moon9Sat
10Sun9:553.59:304.93:590.03:271.26:017:47Full Moon10Sun
11Mon10:323.49:554.94:31-0.23:531.36:007:47Full Moon11Mon
12Tue11:113.310:234.95:04-0.34:201.55:597:48Full Moon12Tue
13Wed11:543.210:534.85:41-0.34:491.85:597:49Waning Gibbous13Wed
14Thu12:433.06:21-0.35:212.05:587:50Waning Gibbous14Thu
15Fri1:422.97:07-0.26:022.25:577:50Waning Gibbous15Fri
16Sat12:084.52:543.08:000.07:012.45:577:51Waning Gibbous16Sat
17Sun1:004.24:093.19:000.18:362.55:567:52Third Quarter17Sun
18Mon2:133.95:083.410:040.210:262.35:557:52Third Quarter18Mon
19Tue3:443.75:533.811:050.211:521.85:557:53Third Quarter19Tue
20Wed5:133.66:324.312:000.35:547:54Third Quarter20Wed
21Thu6:293.77:104.812:551.112:480.35:547:55Waning Crescent21Thu
22Fri7:333.87:475.31:480.41:330.45:537:55Waning Crescent22Fri
23Sat8:313.98:255.62:37-0.32:160.65:527:56Waning Crescent23Sat
24Sun9:253.99:045.93:24-0.82:590.85:527:57New Moon24Sun
25Mon10:173.99:445.94:10-1.13:411.05:517:57New Moon25Mon
26Tue11:103.810:265.84:56-1.34:241.35:517:58New Moon26Tue
27Wed12:043.65:44-1.25:101.65:517:59Waxing Crescent27Wed
28Thu1:023.56:32-1.05:591.95:507:59Waxing Crescent28Thu
29Fri2:063.47:24-0.66:572.25:508:00Waxing Crescent29Fri
30Sat12:424.63:153.48:18-0.28:112.45:508:01Waxing Crescent30Sat
31Sun1:394.04:233.59:160.19:462.45:498:01First Quarter31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9410068)

Common Questions About San Nicolas Island, CA Tides

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What time does the tide turn (slack tide) in San Nicolas Island, CA today?

Slack tide in San Nicolas Island, CA 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 San Nicolas Island, CA?

San Nicolas Island, CA is currently in a neap phase. Tonight's moon is 47% 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 San Nicolas Island, CA 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 San Nicolas Island, CA?

Tide predictions for San Nicolas Island, CA 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 San Nicolas Island, CA?

Tide data for San Nicolas Island, CA is sourced from NOAA Station #9410068. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9410068.

What is the moon phase in San Nicolas Island, CA tonight?

Tonight the moon over San Nicolas Island, CA is First Quarter (47% illuminated). This places San Nicolas Island, CA 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