Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Saturday, June 27, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 45m at 3:56 am (-0.4 ft)
Next high tide : 10:51 am (3.4 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:50 am
Moon phase : Waxing Gibbous (96% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Apr 2044

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:423.47:13-0.56:142.16:487:25Waxing Crescent1Fri
2Sat12:385.63:103.18:15-0.56:522.56:467:25Waxing Crescent2Sat
3Sun1:285.55:063.19:30-0.57:492.96:457:26First Quarter3Sun
4Mon2:345.26:353.310:51-0.59:493.06:447:27First Quarter4Mon
5Tue4:004.97:253.612:03-0.66:427:28First Quarter5Tue
6Wed5:284.88:014.01:02-0.66:417:29First Quarter6Wed
7Thu6:434.88:314.31:022.21:50-0.66:397:29Waxing Gibbous7Thu
8Fri7:474.88:594.62:011.62:30-0.46:387:30Waxing Gibbous8Fri
9Sat8:424.79:264.92:511.03:05-0.16:377:31Waxing Gibbous9Sat
10Sun9:314.59:525.23:350.53:360.36:357:32Full Moon10Sun
11Mon10:174.310:175.34:170.14:040.86:347:33Full Moon11Mon
12Tue11:044.010:425.44:57-0.14:301.36:337:33Full Moon12Tue
13Wed11:523.711:075.35:37-0.34:551.86:317:34Full Moon13Wed
14Thu12:433.46:18-0.35:182.26:307:35Waning Gibbous14Thu
15Fri1:413.27:00-0.25:412.56:297:36Waning Gibbous15Fri
16Sat12:035.02:553.07:470.06:022.86:287:37Waning Gibbous16Sat
17Sun12:364.88:420.26:267:37Waning Gibbous17Sun
18Mon1:184.59:510.36:257:38Third Quarter18Mon
19Tue2:194.27:193.311:000.310:183.26:247:39Third Quarter19Tue
20Wed3:504.07:333.511:570.36:237:40Third Quarter20Wed
21Thu5:153.97:493.812:002.912:420.26:217:41Third Quarter21Thu
22Fri6:234.08:064.11:002.41:200.26:207:42Waning Crescent22Fri
23Sat7:234.08:244.41:461.81:530.36:197:42Waning Crescent23Sat
24Sun8:164.18:454.92:271.22:230.56:187:43Waning Crescent24Sun
25Mon9:074.19:105.33:080.52:530.86:177:44Waning Crescent25Mon
26Tue9:584.19:385.73:49-0.13:241.26:167:45New Moon26Tue
27Wed10:523.910:106.14:34-0.73:571.56:147:46New Moon27Wed
28Thu11:503.810:476.25:21-1.14:321.96:137:46New Moon28Thu
29Fri12:533.66:12-1.35:112.36:127:47Waxing Crescent29Fri
30Sat2:033.47:07-1.35:582.66:117:48Waxing Crescent30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

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

Slack tide in Port San Luis, CA is approximately 7:23 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 spring phase. Tonight's moon is 96% 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 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 (96% illuminated). This places Port San Luis, 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