Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 2:14 pm (2.6 ft)
Next high tide : in 4h 39m at 10:19 am (3.6 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:58 am
Moon phase : Waning Crescent (4% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 2067

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:093.56:31-1.05:322.36:117:48Waning Gibbous1Sun
2Mon2:113.57:22-1.06:222.56:107:49Waning Gibbous2Mon
3Tue12:365.53:193.58:16-0.97:262.76:097:50Waning Gibbous3Tue
4Wed1:345.24:273.79:17-0.68:532.76:087:51Third Quarter4Wed
5Thu2:444.75:244.010:19-0.410:372.46:077:52Third Quarter5Thu
6Fri4:094.36:124.411:18-0.26:067:53Third Quarter6Fri
7Sat5:344.16:544.812:031.912:110.16:057:53Third Quarter7Sat
8Sun6:533.97:335.21:121.212:590.56:047:54Waning Crescent8Sun
9Mon8:033.98:095.62:090.51:440.86:037:55Waning Crescent9Mon
10Tue9:043.98:445.82:59-0.12:251.26:027:56Waning Crescent10Tue
11Wed9:583.89:185.93:44-0.53:031.56:017:57New Moon11Wed
12Thu10:503.89:525.94:27-0.83:411.96:017:57New Moon12Thu
13Fri11:413.710:265.85:09-0.94:172.16:007:58New Moon13Fri
14Sat12:313.65:50-0.94:552.45:597:59New Moon14Sat
15Sun1:213.66:32-0.75:362.65:588:00Waxing Crescent15Sun
16Mon2:133.57:13-0.56:202.75:578:01Waxing Crescent16Mon
17Tue12:185.03:093.57:56-0.37:122.85:578:01Waxing Crescent17Tue
18Wed1:014.64:073.58:410.08:182.95:568:02Waxing Crescent18Wed
19Thu1:504.24:573.79:300.39:492.85:558:03First Quarter19Thu
20Fri2:533.85:383.910:190.611:182.55:558:04First Quarter20Fri
21Sat4:123.46:134.211:050.95:548:04First Quarter21Sat
22Sun5:333.36:434.512:262.111:47 AM1.15:548:05First Quarter22Sun
23Mon6:483.27:124.81:201.512:261.45:538:06Waxing Gibbous23Mon
24Tue7:553.37:415.22:040.91:041.65:528:07Waxing Gibbous24Tue
25Wed8:523.48:125.62:450.31:421.85:528:07Waxing Gibbous25Wed
26Thu9:433.58:465.93:24-0.32:212.05:518:08Waxing Gibbous26Thu
27Fri10:323.69:236.24:05-0.83:022.15:518:09Full Moon27Fri
28Sat11:223.610:036.34:47-1.23:442.35:518:09Full Moon28Sat
29Sun12:133.75:32-1.44:312.45:508:10Full Moon29Sun
30Mon1:043.86:19-1.55:252.45:508:11Waning Gibbous30Mon
31Tue1:563.97:07-1.46:262.55:508:11Waning Gibbous31Tue
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 12:16 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 4% 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 Crescent (4% 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