Tides Today & Tomorrow in Ano Nuevo Island, CA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Ano Nuevo Island, CA.
Next low tide : 10:10 pm (1.0 ft)
Next high tide : in 3h 12m at 2:56 pm (5.0 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 6:28 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #9413878
Common Questions About Tides

Ano Nuevo Island, CA Tides - May 1952

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:073.86:183.610:460.211:442.86:147:58First Quarter1Thu
2Fri4:173.56:553.711:420.46:137:59First Quarter2Fri
3Sat5:323.47:244.012:452.412:320.56:128:00First Quarter3Sat
4Sun6:443.37:504.21:351.81:140.76:108:01Waxing Gibbous4Sun
5Mon7:493.38:154.52:171.21:521.06:098:02Waxing Gibbous5Mon
6Tue8:493.48:424.82:550.62:281.36:088:02Waxing Gibbous6Tue
7Wed9:443.59:105.13:300.03:041.76:078:03Waxing Gibbous7Wed
8Thu10:383.79:405.44:06-0.53:402.16:068:04Full Moon8Thu
9Fri11:313.810:145.54:44-1.04:192.46:058:05Full Moon9Fri
10Sat12:243.85:25-1.35:002.76:048:06Full Moon10Sat
11Sun1:183.86:10-1.55:452.96:048:07Waning Gibbous11Sun
12Mon2:133.86:58-1.66:373.06:038:08Waning Gibbous12Mon
13Tue12:255.53:113.87:51-1.47:403.16:028:08Waning Gibbous13Tue
14Wed1:215.14:083.98:47-1.28:583.06:018:09Waning Gibbous14Wed
15Thu2:254.75:034.09:47-0.910:272.76:008:10Third Quarter15Thu
16Fri3:394.25:524.310:46-0.511:502.15:598:11Third Quarter16Fri
17Sat5:023.86:354.711:440.05:588:12Third Quarter17Sat
18Sun6:263.67:155.012:591.312:370.55:588:13Waning Crescent18Sun
19Mon7:453.57:525.31:570.61:261.05:578:14Waning Crescent19Mon
20Tue8:563.58:285.52:47-0.12:131.55:568:14Waning Crescent20Tue
21Wed10:003.79:035.63:33-0.62:582.05:568:15Waning Crescent21Wed
22Thu10:573.89:375.64:15-1.03:422.45:558:16New Moon22Thu
23Fri11:503.910:125.54:55-1.14:272.75:548:17New Moon23Fri
24Sat12:393.95:34-1.25:112.95:548:17New Moon24Sat
25Sun1:273.86:12-1.15:563.15:538:18Waxing Crescent25Sun
26Mon2:123.86:52-0.96:433.25:538:19Waxing Crescent26Mon
27Tue12:044.92:573.77:32-0.77:353.25:528:20Waxing Crescent27Tue
28Wed12:464.63:413.78:14-0.58:353.15:528:20Waxing Crescent28Wed
29Thu1:324.24:233.78:58-0.29:443.05:518:21Waxing Crescent29Thu
30Fri2:253.85:013.99:430.110:562.65:518:22First Quarter30Fri
31Sat3:283.45:364.110:290.55:508:22First Quarter31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9413878)

Common Questions About Ano Nuevo Island, CA Tides

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What time does the tide turn (slack tide) in Ano Nuevo Island, CA today?

Slack tide in Ano Nuevo Island, CA is approximately 6:33 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 Ano Nuevo Island, CA?

Ano Nuevo Island, CA is currently in a transitional phase. Tonight's moon is 37% 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 Ano Nuevo 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 Ano Nuevo Island, CA?

Tide predictions for Ano Nuevo 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 Ano Nuevo Island, CA?

Tide data for Ano Nuevo Island, CA is sourced from NOAA Station #9413878. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9413878.

What is the moon phase in Ano Nuevo Island, CA tonight?

Tonight the moon over Ano Nuevo Island, CA is First Quarter (37% illuminated). This places Ano Nuevo Island, CA 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