Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, August 2, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 7:24 pm (2.0 ft)
Next high tide : in 2h 47m at 1:37 pm (4.6 ft)
Sunset today : 8:05 pm
Sunrise tomorrow : 6:13 am
Moon phase : Waning Gibbous (83% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Aug 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:393.89:215.84:06-0.23:132.56:138:05New Moon1Fri
2Sat11:103.99:565.84:38-0.33:512.46:148:04New Moon2Sat
3Sun11:424.010:335.85:11-0.44:302.36:148:03New Moon3Sun
4Mon12:154.25:43-0.35:132.26:158:02New Moon4Mon
5Tue12:484.36:16-0.26:002.16:168:01Waxing Crescent5Tue
6Wed1:234.46:490.06:522.16:178:00Waxing Crescent6Wed
7Thu12:395.02:014.67:240.47:511.96:177:59Waxing Crescent7Thu
8Fri1:334.52:444.88:010.89:031.86:187:58Waxing Crescent8Fri
9Sat2:413.93:345.08:441.310:271.46:197:57First Quarter9Sat
10Sun4:113.54:315.39:381.811:470.96:207:56First Quarter10Sun
11Mon5:503.45:295.610:442.26:217:55First Quarter11Mon
12Tue7:193.56:285.912:560.411:54 AM2.46:217:54Waxing Gibbous12Tue
13Wed8:263.87:256.21:55-0.21:022.46:227:53Waxing Gibbous13Wed
14Thu9:164.18:186.42:46-0.62:032.26:237:51Waxing Gibbous14Thu
15Fri9:584.39:086.53:31-0.82:572.06:247:50Full Moon15Fri
16Sat10:384.59:556.44:14-0.93:471.96:247:49Full Moon16Sat
17Sun11:174.610:406.14:55-0.84:361.76:257:48Full Moon17Sun
18Mon11:554.711:265.85:34-0.55:251.66:267:47Full Moon18Mon
19Tue12:334.86:12-0.16:151.66:277:45Waning Gibbous19Tue
20Wed12:125.31:104.86:490.47:061.66:277:44Waning Gibbous20Wed
21Thu1:014.71:494.87:240.98:011.76:287:43Waning Gibbous21Thu
22Fri1:544.22:304.77:591.59:061.76:297:42Waning Gibbous22Fri
23Sat3:013.73:174.78:382.010:261.66:307:40Third Quarter23Sat
24Sun4:333.34:124.69:292.411:451.46:307:39Third Quarter24Sun
25Mon6:153.35:114.710:382.76:317:38Third Quarter25Mon
26Tue7:383.56:084.812:511.111:50 AM2.96:327:36Third Quarter26Tue
27Wed8:293.76:595.01:420.812:522.86:337:35Waning Crescent27Wed
28Thu9:033.87:455.32:240.51:412.76:337:34Waning Crescent28Thu
29Fri9:324.08:255.52:590.32:232.56:347:32Waning Crescent29Fri
30Sat9:594.29:035.63:310.13:012.26:357:31Waning Crescent30Sat
31Sun10:264.39:415.74:020.03:392.06:357:30New Moon31Sun
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 4:30 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 spring phase. Tonight's moon is 83% 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 Waning Gibbous (83% 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