Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 9, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 1:10 am (1.1 ft)
Next high tide : in 4h 31m at 6:14 pm (5.0 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:48 am
Moon phase : Third Quarter (35% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2027

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:026.14:501.45:52-0.16:576:47Waxing Crescent1Fri
2Sat12:074.511:37 AM6.15:241.96:44-0.16:586:45Waxing Crescent2Sat
3Sun1:084.112:145.95:592.47:370.16:596:44Waxing Crescent3Sun
4Mon2:193.812:555.56:352.98:380.37:006:43Waxing Crescent4Mon
5Tue3:553.61:435.17:173.39:510.57:016:41First Quarter5Tue
6Wed5:433.72:504.78:313.511:050.67:016:40First Quarter6Wed
7Thu6:543.84:194.510:503.57:026:39First Quarter7Thu
8Fri7:324.05:384.512:080.612:163.27:036:37First Quarter8Fri
9Sat7:584.26:424.512:580.61:112.87:046:36Waxing Gibbous9Sat
10Sun8:194.47:344.61:380.71:532.37:056:34Waxing Gibbous10Sun
11Mon8:384.68:184.62:090.82:291.97:056:33Waxing Gibbous11Mon
12Tue8:574.98:594.62:370.93:031.47:066:32Waxing Gibbous12Tue
13Wed9:165.29:394.53:011.13:371.07:076:30Full Moon13Wed
14Thu9:375.410:214.43:251.44:120.67:086:29Full Moon14Thu
15Fri10:005.711:054.23:501.74:500.37:096:28Full Moon15Fri
16Sat10:255.911:554.04:152.15:310.17:106:27Full Moon16Sat
17Sun10:556.04:422.46:16-0.17:106:25Waning Gibbous17Sun
18Mon12:523.811:30 AM6.05:122.77:07-0.17:116:24Waning Gibbous18Mon
19Tue2:003.612:115.85:463.08:04-0.17:126:23Waning Gibbous19Tue
20Wed3:293.51:035.66:313.39:120.07:136:22Waning Gibbous20Wed
21Thu5:023.72:115.37:483.510:230.07:146:20Third Quarter21Thu
22Fri6:003.93:385.19:533.411:270.07:156:19Third Quarter22Fri
23Sat6:404.35:074.911:352.97:166:18Third Quarter23Sat
24Sun7:134.76:244.912:210.112:472.37:176:17Waning Crescent24Sun
25Mon7:455.17:334.81:070.31:461.57:176:16Waning Crescent25Mon
26Tue8:165.68:344.71:490.62:370.77:186:15Waning Crescent26Tue
27Wed8:466.09:304.62:260.93:250.17:196:14Waning Crescent27Wed
28Thu9:186.310:244.43:021.44:10-0.47:206:12New Moon28Thu
29Fri9:506.411:184.33:361.84:55-0.67:216:11New Moon29Fri
30Sat10:236.44:102.35:41-0.77:226:10New Moon30Sat
31Sun12:154.110:57 AM6.24:452.66:27-0.57:236:09Waxing Crescent31Sun
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 9:42 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 Port San Luis, CA?

Port San Luis, CA 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 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 Third Quarter (35% 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