Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 5h 30m at 2:38 am (0.2 ft)
Next high tide : 9:12 am (3.1 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:49 am
Moon phase : Waxing Gibbous (77% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2040

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:554.37:454.92:090.52:042.66:586:46Waning Crescent1Mon
2Tue9:144.58:275.02:410.42:382.26:596:44Waning Crescent2Tue
3Wed9:344.69:055.13:090.43:111.87:006:43Waning Crescent3Wed
4Thu9:544.89:425.13:350.63:461.47:006:41New Moon4Thu
5Fri10:155.110:214.94:000.84:221.17:016:40New Moon5Fri
6Sat10:385.311:044.74:251.15:010.87:026:39New Moon6Sat
7Sun11:035.511:524.44:511.45:430.57:036:37New Moon7Sun
8Mon11:315.65:181.86:310.37:046:36Waxing Crescent8Mon
9Tue12:484.112:035.75:472.37:230.27:046:35Waxing Crescent9Tue
10Wed1:563.712:435.76:192.78:260.27:056:33Waxing Crescent10Wed
11Thu3:293.51:335.56:583.19:410.27:066:32First Quarter11Thu
12Fri5:223.62:435.38:053.410:590.17:076:31First Quarter12Fri
13Sat6:373.94:135.210:173.57:086:29First Quarter13Sat
14Sun7:214.25:395.212:05-0.111:58 AM3.17:096:28First Quarter14Sun
15Mon7:554.56:515.31:01-0.21:082.57:096:27Waxing Gibbous15Mon
16Tue8:264.97:545.41:49-0.22:041.87:106:26Waxing Gibbous16Tue
17Wed8:565.38:495.32:300.02:531.27:116:24Waxing Gibbous17Wed
18Thu9:255.69:415.23:070.33:390.77:126:23Full Moon18Thu
19Fri9:545.810:314.93:420.74:240.27:136:22Full Moon19Fri
20Sat10:246.011:224.64:141.25:090.07:146:21Full Moon20Sat
21Sun10:546.04:461.75:54-0.17:156:19Full Moon21Sun
22Mon12:174.211:24 AM5.95:182.36:40-0.17:166:18Waning Gibbous22Mon
23Tue1:174.011:56 AM5.65:492.77:280.17:166:17Waning Gibbous23Tue
24Wed2:293.712:315.36:233.18:220.37:176:16Waning Gibbous24Wed
25Thu4:053.71:125.07:033.59:270.57:186:15Waning Gibbous25Thu
26Fri5:463.82:084.68:173.710:370.77:196:14Third Quarter26Fri
27Sat6:454.03:334.310:433.611:400.77:206:13Third Quarter27Sat
28Sun7:184.15:034.212:103.37:216:12Third Quarter28Sun
29Mon7:434.36:134.212:300.71:032.97:226:10Third Quarter29Mon
30Tue8:044.57:104.31:110.71:442.47:236:09Waning Crescent30Tue
31Wed8:234.88:004.41:440.82:211.87:246:08Waning Crescent31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

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What time does the tide turn (slack tide) in Port San Luis, CA today?

Slack tide in Port San Luis, CA is approximately 5:55 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 Port San Luis, CA?

Port San Luis, CA is currently in a transitional phase. Tonight's moon is 77% 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 Port San Luis, 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 Port San Luis, CA?

Tide predictions for Port San Luis, 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 Port San Luis, CA?

Tide data for Port San Luis, CA is sourced from NOAA Station #9412110. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9412110.

What is the moon phase in Port San Luis, CA tonight?

Tonight the moon over Port San Luis, CA is Waxing Gibbous (77% illuminated). This places Port San Luis, 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