Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 8:30 am (2.0 ft)
Next high tide : in 3h 20m at 3:31 am (3.2 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 6:15 am
Moon phase : Third Quarter (53% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jul 1962

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:223.910:056.24:48-1.03:562.35:528:21New Moon1Sun
2Mon12:093.95:29-1.04:402.45:528:21New Moon2Mon
3Tue12:543.96:09-0.95:262.55:528:21New Moon3Tue
4Wed1:374.06:48-0.66:142.65:538:21Waxing Crescent4Wed
5Thu12:045.32:204.07:26-0.37:042.75:538:21Waxing Crescent5Thu
6Fri12:454.93:054.08:030.08:012.75:548:20Waxing Crescent6Fri
7Sat1:304.43:514.18:410.49:122.75:548:20Waxing Crescent7Sat
8Sun2:223.94:354.39:210.810:372.55:558:20First Quarter8Sun
9Mon3:323.55:164.510:041.211:542.15:568:20First Quarter9Mon
10Tue4:583.15:554.710:491.65:568:19First Quarter10Tue
11Wed6:263.06:325.012:571.611:34 AM1.95:578:19First Quarter11Wed
12Thu7:443.17:085.31:471.112:212.15:578:19Waxing Gibbous12Thu
13Fri8:453.37:455.62:290.51:072.35:588:18Waxing Gibbous13Fri
14Sat9:333.58:225.93:080.01:542.45:598:18Waxing Gibbous14Sat
15Sun10:163.69:016.13:46-0.42:392.45:598:18Full Moon15Sun
16Mon10:573.89:426.34:25-0.83:252.46:008:17Full Moon16Mon
17Tue11:394.010:246.45:05-1.04:122.36:018:17Full Moon17Tue
18Wed12:214.15:46-1.15:042.36:018:16Full Moon18Wed
19Thu1:044.36:28-1.16:002.26:028:16Waning Gibbous19Thu
20Fri12:005.91:494.57:11-0.87:012.16:038:15Waning Gibbous20Fri
21Sat12:535.42:364.77:54-0.48:112.06:038:14Waning Gibbous21Sat
22Sun1:544.83:274.98:400.19:331.86:048:14Third Quarter22Sun
23Mon3:074.24:215.29:310.711:001.56:058:13Third Quarter23Mon
24Tue4:373.75:145.410:271.26:058:12Third Quarter24Tue
25Wed6:123.46:075.712:190.911:26 AM1.76:068:12Third Quarter25Wed
26Thu7:403.56:585.91:270.412:262.06:078:11Waning Crescent26Thu
27Fri8:493.77:476.02:23-0.11:242.36:088:10Waning Crescent27Fri
28Sat9:423.88:326.13:11-0.42:182.36:088:10Waning Crescent28Sat
29Sun10:254.09:146.13:53-0.63:052.46:098:09New Moon29Sun
30Mon11:054.09:526.04:32-0.73:482.36:108:08New Moon30Mon
31Tue11:414.110:305.85:09-0.64:292.36:118:07New Moon31Tue
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 6:00 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 neap phase. Tonight's moon is 53% 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 Third Quarter (53% 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