Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 10, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 2:43 am (-0.7 ft)
Next high tide : in 3h 11m at 6:55 pm (6.3 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:57 am
Moon phase : Waning Crescent (18% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 1994

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:214.67:535.11:500.61:591.96:576:47Waning Crescent1Sat
2Sun8:485.08:425.22:250.52:431.36:586:45Waning Crescent2Sun
3Mon9:165.49:305.22:590.63:260.76:596:44New Moon3Mon
4Tue9:475.810:195.13:340.84:120.27:006:43New Moon4Tue
5Wed10:216.111:114.94:091.05:00-0.17:016:41New Moon5Wed
6Thu10:596.34:471.45:51-0.47:016:40Waxing Crescent6Thu
7Fri12:084.611:41 AM6.35:281.86:46-0.47:026:39Waxing Crescent7Fri
8Sat1:104.312:286.26:142.27:45-0.37:036:37Waxing Crescent8Sat
9Sun2:204.11:225.97:072.58:51-0.17:046:36Waxing Crescent9Sun
10Mon3:434.02:275.58:152.810:040.07:056:34First Quarter10Mon
11Tue5:064.13:475.19:512.911:150.27:056:33First Quarter11Tue
12Wed6:124.35:114.911:282.77:066:32First Quarter12Wed
13Thu7:044.66:264.812:170.312:432.37:076:30Waxing Gibbous13Thu
14Fri7:454.97:304.81:090.41:431.87:086:29Waxing Gibbous14Fri
15Sat8:205.18:254.81:540.62:311.37:096:28Waxing Gibbous15Sat
16Sun8:495.39:114.72:320.93:110.97:106:27Waxing Gibbous16Sun
17Mon9:165.59:544.63:041.23:480.77:106:25Full Moon17Mon
18Tue9:415.610:344.43:331.54:230.57:116:24Full Moon18Tue
19Wed10:065.611:154.34:001.84:580.37:126:23Full Moon19Wed
20Thu10:325.611:584.14:272.15:340.37:136:22Full Moon20Thu
21Fri10:595.54:552.46:110.37:146:20Waning Gibbous21Fri
22Sat12:453.911:29 AM5.45:242.66:510.47:156:19Waning Gibbous22Sat
23Sun1:363.712:025.25:572.97:350.57:166:18Waning Gibbous23Sun
24Mon2:383.612:415.06:353.18:260.77:176:17Waning Gibbous24Mon
25Tue3:563.61:284.77:283.39:250.87:176:16Third Quarter25Tue
26Wed5:073.72:324.48:563.410:270.87:186:15Third Quarter26Wed
27Thu5:564.03:574.210:453.211:230.97:196:14Third Quarter27Thu
28Fri6:314.35:194.212:002.77:206:12Third Quarter28Fri
29Sat7:014.66:294.312:110.912:572.17:216:11Waning Crescent29Sat
30Sun6:315.16:334.412:540.912:461.46:225:10Waning Crescent30Sun
31Mon7:015.57:304.512:341.01:310.76:235:09Waning Crescent31Mon
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 10:49 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 18% 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 (18% 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