Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 1:51 am (0.0 ft)
Next high tide : in 6h 36m at 6:04 pm (5.8 ft)
Sunset today : 11:26 pm
Sunrise tomorrow : 9:03 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jun 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:174.45:303.910:020.010:333.08:5611:18Third Quarter1Sat
2Sun3:283.96:114.110:540.311:562.68:5611:19Third Quarter2Sun
3Mon4:493.66:454.311:400.68:5611:19Third Quarter3Mon
4Tue6:053.47:134.612:592.112:210.98:5511:20Third Quarter4Tue
5Wed7:153.37:394.81:491.612:571.28:5511:21Waning Crescent5Wed
6Thu8:163.38:045.12:291.01:301.58:5511:21Waning Crescent6Thu
7Fri9:093.48:295.43:050.52:021.88:5511:22Waning Crescent7Fri
8Sat9:583.48:565.63:400.12:342.18:5511:22Waning Crescent8Sat
9Sun10:453.59:255.84:16-0.33:062.38:5511:23New Moon9Sun
10Mon11:343.59:575.94:53-0.63:402.58:5411:23New Moon10Mon
11Tue12:243.55:33-0.94:182.78:5411:24New Moon11Tue
12Wed1:153.56:15-1.05:012.88:5411:24New Moon12Wed
13Thu2:073.66:59-1.05:522.98:5411:24Waxing Crescent13Thu
14Fri3:013.77:45-1.06:543.08:5411:25Waxing Crescent14Fri
15Sat12:505.43:543.98:34-0.88:103.08:5511:25Waxing Crescent15Sat
16Sun1:505.04:424.29:25-0.59:442.78:5511:25First Quarter16Sun
17Mon3:024.45:254.610:17-0.111:152.28:5511:26First Quarter17Mon
18Tue4:284.06:055.011:080.38:5511:26First Quarter18Tue
19Wed5:563.66:445.512:311.511:56 AM0.88:5511:26First Quarter19Wed
20Thu7:203.57:245.91:350.712:431.28:5511:27Waxing Gibbous20Thu
21Fri8:363.58:036.22:30-0.11:301.78:5511:27Waxing Gibbous21Fri
22Sat9:403.68:436.43:20-0.72:162.08:5611:27Waxing Gibbous22Sat
23Sun10:373.79:236.54:06-1.13:022.38:5611:27Full Moon23Sun
24Mon11:323.710:036.44:51-1.33:472.58:5611:27Full Moon24Mon
25Tue12:233.85:36-1.34:332.78:5611:27Full Moon25Tue
26Wed1:113.86:19-1.15:222.88:5711:28Full Moon26Wed
27Thu1:583.87:01-0.96:132.88:5711:28Waning Gibbous27Thu
28Fri12:095.42:453.87:42-0.67:072.98:5811:28Waning Gibbous28Fri
29Sat12:535.03:333.98:23-0.28:102.98:5811:28Waning Gibbous29Sat
30Sun1:414.44:184.09:040.29:302.88:5811:28Third Quarter30Sun
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 9:57 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 transitional phase. Tonight's moon is 30% 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 Waning Crescent (30% 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