Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, June 28, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 5:06 am (-0.6 ft)
Next high tide : in 2h 01m at 9:24 pm (5.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:51 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Sep 2046

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:115.311:115.64:55-0.25:090.86:367:29New Moon1Sat
2Sun11:465.75:300.36:050.56:367:28Waxing Crescent2Sun
3Mon12:075.112:245.96:060.97:030.36:377:27Waxing Crescent3Mon
4Tue1:084.51:075.96:431.58:080.36:387:25Waxing Crescent4Tue
5Wed2:223.91:555.87:222.19:240.36:387:24First Quarter5Wed
6Thu4:003.52:545.68:102.710:480.36:397:22First Quarter6Thu
7Fri5:543.54:095.49:303.16:407:21First Quarter7Fri
8Sat7:233.75:285.312:050.211:19 AM3.26:417:19First Quarter8Sat
9Sun8:154.06:395.41:100.012:433.06:417:18Waxing Gibbous9Sun
10Mon8:504.27:375.42:020.01:442.66:427:17Waxing Gibbous10Mon
11Tue9:184.38:255.42:440.02:302.36:437:15Waxing Gibbous11Tue
12Wed9:424.59:065.43:180.13:091.96:447:14Waxing Gibbous12Wed
13Thu10:034.69:435.23:470.33:431.76:447:12Full Moon13Thu
14Fri10:244.810:185.04:120.64:171.46:457:11Full Moon14Fri
15Sat10:444.910:544.74:350.94:521.26:467:09Full Moon15Sat
16Sun11:065.011:334.44:571.35:281.16:467:08Full Moon16Sun
17Mon11:285.15:191.66:071.06:477:07Waning Gibbous17Mon
18Tue12:164.111:53 AM5.25:412.06:491.06:487:05Waning Gibbous18Tue
19Wed1:053.712:205.26:022.47:381.06:497:04Waning Gibbous19Wed
20Thu2:073.412:535.16:222.78:381.06:497:02Waning Gibbous20Thu
21Fri3:513.21:365.06:393.09:571.06:507:01Third Quarter21Fri
22Sat2:404.911:160.86:516:59Third Quarter22Sat
23Sun4:074.96:526:58Third Quarter23Sun
24Mon7:473.85:285.112:180.511:34 AM3.36:526:56Third Quarter24Mon
25Tue8:064.06:365.31:080.212:442.86:536:55Waning Crescent25Tue
26Wed8:284.47:365.51:500.01:412.26:546:53Waning Crescent26Wed
27Thu8:534.88:315.62:27-0.12:321.56:556:52Waning Crescent27Thu
28Fri9:215.39:235.63:030.13:210.86:556:51New Moon28Fri
29Sat9:515.810:165.43:380.44:100.26:566:49New Moon29Sat
30Sun10:256.211:125.04:130.85:01-0.26:576:48New Moon30Sun
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 1:15 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 99% 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 Full Moon (99% 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