Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Monday, July 6, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 3h 21m at 10:20 pm (2.1 ft)
Next high tide (tomorrow) : 3:26 am (3.3 ft)
Sunset today : 11:27 pm
Sunrise tomorrow : 9:01 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:543.85:225.112:140.311:29 AM3.410:049:54First Quarter1Sun
2Mon8:094.16:335.31:060.012:442.910:059:52Waxing Gibbous2Mon
3Tue8:304.57:355.61:49-0.21:412.310:069:51Waxing Gibbous3Tue
4Wed8:554.98:315.72:28-0.22:321.610:079:49Waxing Gibbous4Wed
5Thu9:225.49:255.63:04-0.13:220.910:079:48Full Moon5Thu
6Fri9:525.810:185.33:390.34:110.210:089:47Full Moon6Fri
7Sat10:246.211:144.94:140.85:02-0.210:099:45Full Moon7Sat
8Sun10:596.44:491.35:55-0.410:109:44Full Moon8Sun
9Mon12:154.511:37 AM6.45:251.96:51-0.510:119:43Waning Gibbous9Mon
10Tue1:234.112:196.26:042.57:50-0.310:119:41Waning Gibbous10Tue
11Wed2:453.81:065.86:483.08:58-0.110:129:40Waning Gibbous11Wed
12Thu4:293.72:045.47:483.410:150.110:139:38Third Quarter12Thu
13Fri6:033.93:235.09:363.611:290.210:149:37Third Quarter13Fri
14Sat7:034.14:534.711:323.410:159:36Third Quarter14Sat
15Sun7:424.36:094.712:300.312:462.910:169:35Third Quarter15Sun
16Mon8:114.57:104.71:190.41:382.510:169:33Waning Crescent16Mon
17Tue8:344.78:014.61:580.52:192.010:179:32Waning Crescent17Tue
18Wed8:544.98:444.62:290.82:541.610:189:31Waning Crescent18Wed
19Thu9:135.19:244.52:541.03:271.210:199:30Waning Crescent19Thu
20Fri9:315.310:034.43:161.34:000.810:209:28New Moon20Fri
21Sat9:505.410:434.23:371.74:340.510:219:27New Moon21Sat
22Sun10:105.611:274.03:582.05:090.310:229:26New Moon22Sun
23Mon10:325.74:192.45:480.210:229:25New Moon23Mon
24Tue12:173.810:57 AM5.74:412.76:300.110:239:24Waxing Crescent24Tue
25Wed1:143.611:26 AM5.65:033.07:170.110:249:23Waxing Crescent25Wed
26Thu2:273.512:025.55:253.28:120.210:259:21Waxing Crescent26Thu
27Fri12:495.39:180.210:269:20Waxing Crescent27Fri
28Sat1:545.010:270.210:279:19First Quarter28Sat
29Sun5:283.92:244.88:423.710:270.19:288:18First Quarter29Sun
30Mon5:514.23:574.710:333.211:180.19:298:17First Quarter30Mon
31Tue6:154.65:154.711:432.59:308:16Waxing 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 12:53 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 transitional phase. Tonight's moon is 62% 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 (62% 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