Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 12:49 am (1.2 ft)
Next high tide : in 51m at 5:49 pm (5.1 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:49 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Aug 2018

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:434.72:214.37:390.67:542.46:128:06Waning Gibbous1Wed
2Thu1:294.23:004.48:120.99:042.26:138:05Waning Gibbous2Thu
3Fri2:303.73:454.68:491.410:281.96:138:04Third Quarter3Fri
4Sat3:573.34:334.99:361.811:471.46:148:03Third Quarter4Sat
5Sun5:383.25:245.310:342.16:158:02Third Quarter5Sun
6Mon7:103.36:175.712:530.811:38 AM2.36:168:01Waning Crescent6Mon
7Tue8:193.57:116.11:490.112:422.46:168:00Waning Crescent7Tue
8Wed9:113.88:046.42:39-0.41:432.36:177:59Waning Crescent8Wed
9Thu9:554.18:546.73:25-0.92:402.16:187:58Waning Crescent9Thu
10Fri10:374.39:446.84:09-1.23:341.96:197:57New Moon10Fri
11Sat11:194.610:346.64:53-1.24:281.76:207:56New Moon11Sat
12Sun12:014.85:37-1.05:231.66:207:55New Moon12Sun
13Mon12:444.96:19-0.76:201.56:217:54Waxing Crescent13Mon
14Tue12:175.71:285.07:01-0.27:201.46:227:53Waxing Crescent14Tue
15Wed1:135.12:145.17:430.48:261.46:237:51Waxing Crescent15Wed
16Thu2:154.43:055.18:271.19:431.46:237:50First Quarter16Thu
17Fri3:333.84:005.19:161.711:051.26:247:49First Quarter17Fri
18Sat5:093.54:595.110:172.26:257:48First Quarter18Sat
19Sun6:483.45:565.112:211.011:27 AM2.66:267:47First Quarter19Sun
20Mon8:063.66:505.21:240.712:342.76:267:45Waxing Gibbous20Mon
21Tue8:573.87:385.32:140.41:312.76:277:44Waxing Gibbous21Tue
22Wed9:323.98:205.42:550.22:162.66:287:43Waxing Gibbous22Wed
23Thu10:014.08:575.53:300.12:532.56:297:42Waxing Gibbous23Thu
24Fri10:274.19:315.64:010.03:272.36:297:40Full Moon24Fri
25Sat10:534.210:045.54:310.04:012.16:307:39Full Moon25Sat
26Sun11:204.310:385.45:000.14:362.06:317:38Full Moon26Sun
27Mon11:474.411:145.25:290.25:141.96:327:36Full Moon27Mon
28Tue12:164.55:570.55:551.86:327:35Waning Gibbous28Tue
29Wed12:454.66:260.86:401.76:337:34Waning Gibbous29Wed
30Thu12:354.61:174.76:551.17:311.76:347:32Waning Gibbous30Thu
31Fri1:254.11:544.87:261.68:341.66:357:31Waning Gibbous31Fri
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 9:19 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 neap phase. Tonight's moon is 59% 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 minimum.

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 First Quarter (59% illuminated). This places Port San Luis, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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