Tides Today & Tomorrow in San Nicolas Island, CA

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in San Nicolas Island, CA.
Next low tide : in 44m at 5:38 am (-0.3 ft)
Next high tide : 11:52 am (3.8 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 6:10 am
Moon phase : Waning Gibbous (95% illuminated)
Tide Station Location : Station #9410068
Common Questions About Tides

San Nicolas Island, CA Tides - Apr 2086

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:323.311:054.65:350.04:581.36:447:18Waning Gibbous1Mon
2Tue12:153.06:150.15:211.66:437:19Waning Gibbous2Tue
3Wed1:102.77:020.25:441.86:417:20Waning Gibbous3Wed
4Thu12:104.42:322.48:010.46:122.16:407:20Waning Gibbous4Thu
5Fri12:584.24:392.59:170.47:102.46:397:21Third Quarter5Fri
6Sat2:104.06:002.810:390.39:402.56:377:22Third Quarter6Sat
7Sun3:473.96:363.111:450.211:352.16:367:23Third Quarter7Sun
8Mon5:174.07:063.612:370.06:357:23Third Quarter8Mon
9Tue6:284.27:364.112:451.51:20-0.26:347:24Waning Crescent9Tue
10Wed7:284.48:084.61:390.82:00-0.26:327:25Waning Crescent10Wed
11Thu8:214.58:415.12:280.12:37-0.16:317:26Waning Crescent11Thu
12Fri9:124.49:165.53:15-0.53:140.16:307:26New Moon12Fri
13Sat10:034.39:535.74:02-0.93:510.46:297:27New Moon13Sat
14Sun10:544.010:315.74:49-1.14:290.76:277:28New Moon14Sun
15Mon11:483.611:125.55:38-1.15:081.16:267:29Waxing Crescent15Mon
16Tue12:473.36:29-0.95:501.66:257:29Waxing Crescent16Tue
17Wed1:583.07:27-0.56:392.06:247:30Waxing Crescent17Wed
18Thu12:464.73:272.98:32-0.27:482.36:237:31Waxing Crescent18Thu
19Fri1:484.25:003.09:460.19:342.46:217:31First Quarter19Fri
20Sat3:093.76:053.311:000.311:232.26:207:32First Quarter20Sat
21Sun4:413.56:483.512:020.46:197:33First Quarter21Sun
22Mon5:583.57:193.812:371.812:490.56:187:34First Quarter22Mon
23Tue6:583.57:444.01:271.41:250.66:177:34Waxing Gibbous23Tue
24Wed7:453.58:064.32:061.01:550.86:167:35Waxing Gibbous24Wed
25Thu8:263.58:274.52:400.62:210.96:157:36Waxing Gibbous25Thu
26Fri9:043.58:494.73:120.22:461.06:147:37Waxing Gibbous26Fri
27Sat9:403.59:134.83:43-0.13:101.26:137:37Full Moon27Sat
28Sun10:173.49:385.04:15-0.33:351.36:127:38Full Moon28Sun
29Mon10:553.310:065.04:49-0.44:011.56:117:39Full Moon29Mon
30Tue11:373.110:365.05:25-0.44:291.76:107:40Full Moon30Tue
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 8:45 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 spring phase. Tonight's moon is 95% 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 maximum.

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 Waning Gibbous (95% illuminated). This places San Nicolas Island, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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