Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 9, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 1:10 am (1.1 ft)
Next high tide : in 5h 46m at 6:14 pm (5.0 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:48 am
Moon phase : Third Quarter (35% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Sep 2027

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:145.311:135.74:58-0.35:110.86:357:30New Moon1Wed
2Thu11:495.65:340.26:050.66:367:28Waxing Crescent2Thu
3Fri12:075.112:265.76:090.97:020.56:377:27Waxing Crescent3Fri
4Sat1:054.41:055.76:431.58:020.66:377:26Waxing Crescent4Sat
5Sun2:133.81:485.57:182.29:120.76:387:24Waxing Crescent5Sun
6Mon3:463.42:405.37:562.710:340.76:397:23First Quarter6Mon
7Tue5:493.43:485.08:563.211:530.66:407:21First Quarter7Tue
8Wed7:333.65:064.910:543.46:407:20First Quarter8Wed
9Thu8:213.86:165.012:590.512:253.26:417:19First Quarter9Thu
10Fri8:504.07:145.11:500.31:252.96:427:17Waxing Gibbous10Fri
11Sat9:124.18:015.22:300.32:082.66:437:16Waxing Gibbous11Sat
12Sun9:314.28:405.33:020.22:432.36:437:14Waxing Gibbous12Sun
13Mon9:504.49:165.33:290.33:172.06:447:13Waxing Gibbous13Mon
14Tue10:094.69:515.13:540.53:501.66:457:11Full Moon14Tue
15Wed10:294.810:265.04:170.74:251.46:457:10Full Moon15Wed
16Thu10:515.011:054.74:401.05:031.16:467:09Full Moon16Thu
17Fri11:145.211:484.45:031.35:430.96:477:07Full Moon17Fri
18Sat11:395.45:271.76:270.86:487:06Waning Gibbous18Sat
19Sun12:374.012:085.45:512.17:170.76:487:04Waning Gibbous19Sun
20Mon1:373.612:435.56:162.58:170.76:497:03Waning Gibbous20Mon
21Tue3:033.31:295.46:432.99:330.66:507:01Third Quarter21Tue
22Wed5:133.32:315.37:203.210:560.46:517:00Third Quarter22Wed
23Thu6:503.53:565.39:113.46:516:58Third Quarter23Thu
24Fri7:303.85:215.412:060.111:20 AM3.26:526:57Third Quarter24Fri
25Sat7:594.16:345.51:02-0.112:402.86:536:55Waning Crescent25Sat
26Sun8:274.57:375.71:49-0.31:422.16:546:54Waning Crescent26Sun
27Mon8:564.98:345.72:30-0.22:351.46:546:53Waning Crescent27Mon
28Tue9:265.49:275.63:070.03:250.86:556:51New Moon28Tue
29Wed9:565.710:195.33:430.34:140.36:566:50New Moon29Wed
30Thu10:286.011:114.94:170.85:030.06:576:48New Moon30Thu
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 9:42 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 35% 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 Third Quarter (35% 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