Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 6:31 am (-1.3 ft)
Next high tide (tomorrow) : in 42m at 11:13 pm (6.5 ft)
Sunset today : 8:17 pm
Sunrise tomorrow : 6:00 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Dec 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:004.43:483.611:002.610:241.16:534:51Third Quarter1Thu
2Fri5:304.65:123.412:002.16:544:50Third Quarter2Fri
3Sat6:004.96:243.312:481.56:554:50Waning Crescent3Sat
4Sun6:245.27:303.41:300.96:564:50Waning Crescent4Sun
5Mon6:485.58:243.412:122.12:060.46:574:50Waning Crescent5Mon
6Tue7:125.89:123.512:422.42:36-0.16:574:50Waning Crescent6Tue
7Wed7:426.010:003.61:182.63:18-0.56:584:50New Moon7Wed
8Thu8:186.210:423.61:482.83:54-0.86:594:51New Moon8Thu
9Fri8:486.311:303.72:302.94:36-1.07:004:51New Moon9Fri
10Sat9:306.33:063.05:18-1.17:004:51New Moon10Sat
11Sun12:183.710:12 AM6.23:543.06:00-1.07:014:51Waxing Crescent11Sun
12Mon1:063.711:00 AM5.94:543.16:48-0.97:024:51Waxing Crescent12Mon
13Tue2:003.911:54 AM5.46:003.17:36-0.67:034:51Waxing Crescent13Tue
14Wed2:484.11:004.87:243.08:24-0.17:034:52First Quarter14Wed
15Thu3:304.52:184.29:062.69:120.47:044:52First Quarter15Thu
16Fri4:124.93:543.610:361.910:000.97:054:52First Quarter16Fri
17Sat4:545.45:303.411:481.110:481.57:054:53First Quarter17Sat
18Sun5:305.87:003.412:480.27:064:53Waxing Gibbous18Sun
19Mon6:126.28:123.51:42-0.57:064:54Waxing Gibbous19Mon
20Tue6:546.59:123.612:242.32:30-1.07:074:54Waxing Gibbous20Tue
21Wed7:366.610:003.71:122.63:12-1.37:074:55Full Moon21Wed
22Thu8:186.610:483.82:002.73:54-1.37:084:55Full Moon22Thu
23Fri9:006.411:363.82:482.84:36-1.37:084:56Full Moon23Fri
24Sat9:426.23:362.85:18-1.17:094:56Full Moon24Sat
25Sun12:183.810:24 AM5.84:242.96:00-0.87:094:57Waning Gibbous25Sun
26Mon1:003.811:00 AM5.45:122.96:36-0.47:094:57Waning Gibbous26Mon
27Tue1:363.911:42 AM4.96:062.97:120.07:104:58Waning Gibbous27Tue
28Wed2:184.012:304.37:062.87:420.57:104:59Waning Gibbous28Wed
29Thu3:004.11:243.78:302.78:181.07:104:59Third Quarter29Thu
30Fri3:364.32:423.110:002.48:541.47:115:00Third Quarter30Fri
31Sat4:124.53:542.811:181.89:242.07:115:01Third Quarter31Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

Show All
What time does the tide turn (slack tide) in Port San Luis, CA today?

Slack tide in Port San Luis, CA is approximately 2:52 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 spring phase. Tonight's moon is 3% 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 New Moon (3% 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