Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 10:52 am (1.1 ft)
Next high tide : in 3h 32m at 4:52 am (3.4 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:49 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2019

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:234.912:195.96:081.37:080.16:576:47Waxing Crescent1Tue
2Wed1:264.41:035.76:492.08:090.26:586:46Waxing Crescent2Wed
3Thu2:404.01:515.47:362.59:190.46:596:44Waxing Crescent3Thu
4Fri4:153.82:515.18:383.010:360.57:006:43First Quarter4Fri
5Sat5:523.94:074.810:173.211:480.57:006:41First Quarter5Sat
6Sun7:054.15:264.711:553.17:016:40First Quarter6Sun
7Mon7:534.36:344.712:490.41:042.87:026:39Waxing Gibbous7Mon
8Tue8:264.57:314.81:380.41:532.57:036:37Waxing Gibbous8Tue
9Wed8:524.68:174.92:180.52:312.17:046:36Waxing Gibbous9Wed
10Thu9:154.78:564.92:510.63:041.87:056:35Waxing Gibbous10Thu
11Fri9:364.99:334.93:190.73:361.57:056:33Waxing Gibbous11Fri
12Sat9:575.010:094.83:450.94:081.27:066:32Full Moon12Sat
13Sun10:195.210:464.64:101.24:410.97:076:31Full Moon13Sun
14Mon10:425.311:274.44:351.55:170.87:086:29Full Moon14Mon
15Tue11:075.45:001.85:560.67:096:28Full Moon15Tue
16Wed12:124.111:34 AM5.45:272.26:380.57:106:27Waning Gibbous16Wed
17Thu1:053.912:055.45:562.57:260.57:106:25Waning Gibbous17Thu
18Fri2:093.712:425.36:282.98:230.57:116:24Waning Gibbous18Fri
19Sat3:383.61:305.17:103.29:320.57:126:23Third Quarter19Sat
20Sun5:163.72:374.98:253.410:460.47:136:22Third Quarter20Sun
21Mon6:213.94:044.910:263.411:500.27:146:20Third Quarter21Mon
22Tue7:034.25:284.911:553.07:156:19Third Quarter22Tue
23Wed7:374.66:405.112:440.11:012.47:166:18Waning Crescent23Wed
24Thu8:095.07:445.21:320.01:561.77:166:17Waning Crescent24Thu
25Fri8:415.48:425.32:150.12:461.07:176:16Waning Crescent25Fri
26Sat9:145.89:365.22:550.33:340.37:186:15New Moon26Sat
27Sun9:486.210:305.03:330.74:22-0.27:196:14New Moon27Sun
28Mon10:236.311:264.74:111.15:11-0.57:206:13New Moon28Mon
29Tue11:006.44:501.66:01-0.67:216:11New Moon29Tue
30Wed12:254.511:39 AM6.25:302.16:53-0.57:226:10Waxing Crescent30Wed
31Thu1:294.212:205.96:142.67:47-0.37:236:09Waxing Crescent31Thu
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 7:52 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 neap phase. Tonight's moon is 59% 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 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 First Quarter (59% illuminated). This places Port San Luis, 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