Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, June 28, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 2h 54m at 3:03 pm (2.9 ft)
Next high tide : 9:24 pm (5.7 ft)
Sunset today : 11:28 pm
Sunrise tomorrow : 8:58 am
Moon phase : Full Moon (98% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2018

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon4:273.62:555.28:323.010:480.510:049:53Third Quarter1Mon
2Tue5:583.84:155.110:103.111:580.210:059:52Third Quarter2Tue
3Wed7:014.15:345.311:432.910:069:51Third Quarter3Wed
4Thu7:464.46:445.412:570.012:542.510:079:49Waning Crescent4Thu
5Fri8:244.87:465.61:48-0.11:521.910:079:48Waning Crescent5Fri
6Sat8:595.18:415.72:33-0.22:441.410:089:46Waning Crescent6Sat
7Sun9:325.49:325.63:130.03:320.910:099:45New Moon7Sun
8Mon10:055.710:225.43:510.34:180.510:109:44New Moon8Mon
9Tue10:395.811:125.14:280.75:050.210:119:42New Moon9Tue
10Wed11:145.85:041.15:530.110:119:41New Moon10Wed
11Thu12:054.711:49 AM5.75:411.76:410.210:129:40Waxing Crescent11Thu
12Fri1:014.312:255.56:172.27:310.310:139:38Waxing Crescent12Fri
13Sat2:044.01:045.26:562.68:270.510:149:37Waxing Crescent13Sat
14Sun3:233.81:494.97:433.09:330.710:159:36Waxing Crescent14Sun
15Mon4:583.82:494.58:563.310:440.810:169:34First Quarter15Mon
16Tue6:163.94:104.310:513.411:490.810:169:33First Quarter16Tue
17Wed7:084.15:294.312:153.110:179:32First Quarter17Wed
18Thu7:434.36:344.412:420.81:102.810:189:31First Quarter18Thu
19Fri8:104.57:274.51:250.81:512.310:199:29Waxing Gibbous19Fri
20Sat8:344.78:134.62:010.82:271.910:209:28Waxing Gibbous20Sat
21Sun8:564.98:544.72:330.83:001.510:219:27Waxing Gibbous21Sun
22Mon9:195.29:344.73:020.93:341.110:229:26Waxing Gibbous22Mon
23Tue9:435.410:154.63:301.14:090.710:239:25Full Moon23Tue
24Wed10:095.610:594.53:591.44:480.410:239:24Full Moon24Wed
25Thu10:385.811:484.34:291.65:300.110:249:22Full Moon25Thu
26Fri11:105.95:022.06:150.010:259:21Waning Gibbous26Fri
27Sat12:434.111:47 AM5.95:392.37:06-0.110:269:20Waning Gibbous27Sat
28Sun1:463.912:305.76:212.78:02-0.110:279:19Waning Gibbous28Sun
29Mon3:033.81:225.57:153.09:080.010:289:18Waning Gibbous29Mon
30Tue4:293.92:295.28:333.210:190.010:299:17Third Quarter30Tue
31Wed5:394.23:534.910:203.211:260.110:309:16Third Quarter31Wed
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 6:13 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 98% 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 Full Moon (98% 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