Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 1:49 am (0.6 ft)
Next high tide : in 4h 34m at 6:28 pm (5.3 ft)
Sunset today : 11:27 pm
Sunrise tomorrow : 8:56 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Dec 2025

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:215.97:323.81:250.210:007:57Waxing Gibbous1Mon
2Tue6:576.48:353.812:271.82:13-0.610:017:57Waxing Gibbous2Tue
3Wed7:356.89:343.91:102.13:00-1.210:017:57Full Moon3Wed
4Thu8:177.110:333.91:552.43:49-1.610:027:57Full Moon4Thu
5Fri9:027.111:313.92:422.64:39-1.710:037:57Full Moon5Fri
6Sat9:496.93:342.85:30-1.610:047:57Waning Gibbous6Sat
7Sun12:274.010:40 AM6.54:312.96:21-1.310:057:57Waning Gibbous7Sun
8Mon1:254.011:35 AM6.05:362.97:13-0.910:057:57Waning Gibbous8Mon
9Tue2:234.112:335.36:503.08:05-0.410:067:58Waning Gibbous9Tue
10Wed3:194.31:404.68:202.88:570.110:077:58Third Quarter10Wed
11Thu4:084.63:013.99:562.59:470.710:087:58Third Quarter11Thu
12Fri4:504.84:303.511:171.910:331.210:087:58Third Quarter12Fri
13Sat5:275.15:573.312:211.310:097:58Third Quarter13Sat
14Sun6:005.37:173.31:120.810:107:59Waning Crescent14Sun
15Mon6:315.58:193.31:530.310:107:59Waning Crescent15Mon
16Tue7:005.69:093.412:292.52:29-0.110:117:59Waning Crescent16Tue
17Wed7:295.79:533.51:032.83:04-0.310:128:00Waning Crescent17Wed
18Thu7:595.810:333.61:372.93:37-0.510:128:00New Moon18Thu
19Fri8:305.811:123.62:113.04:12-0.610:138:01New Moon19Fri
20Sat9:035.811:503.62:453.04:48-0.710:138:01New Moon20Sat
21Sun9:375.83:223.05:24-0.710:148:01New Moon21Sun
22Mon12:283.610:13 AM5.64:043.06:00-0.610:148:02Waxing Crescent22Mon
23Tue1:073.710:52 AM5.44:523.16:36-0.510:158:03Waxing Crescent23Tue
24Wed1:463.811:35 AM5.05:503.07:12-0.210:158:03Waxing Crescent24Wed
25Thu2:254.012:264.57:013.07:490.210:168:04Waxing Crescent25Thu
26Fri3:034.31:333.98:322.78:300.710:168:04First Quarter26Fri
27Sat3:394.63:083.310:062.19:141.210:168:05First Quarter27Sat
28Sun4:175.14:533.011:221.310:011.610:178:06First Quarter28Sun
29Mon4:575.66:343.112:250.410:178:06Waxing Gibbous29Mon
30Tue5:416.17:523.31:19-0.410:178:07Waxing Gibbous30Tue
31Wed6:286.58:533.52:09-1.110:178:08Waxing Gibbous31Wed
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 10:08 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 67% 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 First Quarter (67% 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