Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 9:19 am (-0.2 ft)
Next high tide (tomorrow) : in 5h 26m at 2:14 am (4.7 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:48 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jun 2023

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:253.48:385.83:150.12:091.95:498:12Waxing Gibbous1Thu
2Fri10:193.59:096.13:54-0.52:442.25:498:12Full Moon2Fri
3Sat11:133.59:456.34:36-1.03:222.45:498:13Full Moon3Sat
4Sun12:093.55:22-1.34:032.65:488:13Full Moon4Sun
5Mon1:063.66:09-1.54:502.85:488:14Full Moon5Mon
6Tue2:033.66:59-1.55:472.95:488:15Waning Gibbous6Tue
7Wed12:026.13:023.77:50-1.46:562.95:488:15Waning Gibbous7Wed
8Thu12:595.73:583.98:43-1.18:182.95:488:16Waning Gibbous8Thu
9Fri2:035.14:494.29:38-0.79:562.65:488:16Third Quarter9Fri
10Sat3:194.55:334.610:31-0.311:292.15:488:17Third Quarter10Sat
11Sun4:464.06:145.011:210.35:478:17Third Quarter11Sun
12Mon6:123.66:525.412:451.412:070.85:478:17Waning Crescent12Mon
13Tue7:363.47:295.81:480.612:521.35:478:18Waning Crescent13Tue
14Wed8:503.48:056.02:410.01:341.85:488:18Waning Crescent14Wed
15Thu9:533.48:406.13:27-0.52:152.25:488:19Waning Crescent15Thu
16Fri10:493.59:146.14:10-0.82:542.55:488:19New Moon16Fri
17Sat11:413.59:486.04:50-0.93:332.75:488:19New Moon17Sat
18Sun12:293.65:30-0.94:112.95:488:20New Moon18Sun
19Mon1:133.66:09-0.84:522.95:488:20New Moon19Mon
20Tue1:563.66:47-0.75:363.05:488:20Waxing Crescent20Tue
21Wed2:403.67:25-0.56:253.05:488:20Waxing Crescent21Wed
22Thu12:195.13:243.68:02-0.27:213.05:498:20Waxing Crescent22Thu
23Fri1:014.74:063.88:400.18:303.05:498:21Waxing Crescent23Fri
24Sat1:484.24:434.09:180.49:592.85:498:21First Quarter24Sat
25Sun2:483.75:164.29:560.811:242.45:508:21First Quarter25Sun
26Mon4:093.35:454.610:341.25:508:21First Quarter26Mon
27Tue5:403.06:154.912:321.811:12 AM1.65:508:21First Quarter27Tue
28Wed7:103.06:475.31:271.211:52 AM1.95:518:21Waxing Gibbous28Wed
29Thu8:283.17:225.72:140.512:352.35:518:21Waxing Gibbous29Thu
30Fri9:303.38:026.12:57-0.21:222.55:518:21Waxing Gibbous30Fri
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 5:46 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 28% 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 Waxing Crescent (28% 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