Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, August 2, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 7:24 pm (2.0 ft)
Next high tide : in 22m at 1:37 pm (4.6 ft)
Sunset today : 8:05 pm
Sunrise tomorrow : 6:13 am
Moon phase : Waning Gibbous (83% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:365.410:555.24:230.64:500.66:586:45New Moon1Wed
2Thu11:085.611:464.94:570.95:380.46:596:44New Moon2Thu
3Fri11:455.85:341.36:300.27:006:42Waxing Crescent3Fri
4Sat12:434.612:265.86:131.87:260.17:016:41Waxing Crescent4Sat
5Sun1:494.21:135.76:572.28:310.17:026:40Waxing Crescent5Sun
6Mon3:093.92:105.57:522.79:450.27:026:38First Quarter6Mon
7Tue4:433.93:225.39:113.011:020.17:036:37First Quarter7Tue
8Wed6:044.14:455.210:533.07:046:35First Quarter8Wed
9Thu7:054.46:025.112:090.112:182.77:056:34First Quarter9Thu
10Fri7:514.77:105.21:070.01:232.27:066:33Waxing Gibbous10Fri
11Sat8:295.08:085.21:560.12:161.77:066:31Waxing Gibbous11Sat
12Sun9:015.28:585.22:380.23:021.37:076:30Waxing Gibbous12Sun
13Mon9:315.49:435.13:150.53:430.97:086:29Full Moon13Mon
14Tue9:595.510:264.93:480.84:220.77:096:28Full Moon14Tue
15Wed10:275.511:094.64:191.25:000.57:106:26Full Moon15Wed
16Thu10:545.511:544.44:491.65:380.57:116:25Full Moon16Thu
17Fri11:215.45:182.06:180.57:116:24Waning Gibbous17Fri
18Sat12:424.111:50 AM5.35:472.46:590.57:126:23Waning Gibbous18Sat
19Sun1:363.912:215.16:182.77:450.77:136:21Waning Gibbous19Sun
20Mon2:423.712:574.86:543.08:390.87:146:20Waning Gibbous20Mon
21Tue4:103.61:424.67:443.39:440.97:156:19Third Quarter21Tue
22Wed5:353.72:474.39:153.510:520.97:166:18Third Quarter22Wed
23Thu6:313.94:134.211:083.311:500.97:176:17Third Quarter23Thu
24Fri7:084.25:314.312:183.07:186:15Third Quarter24Fri
25Sat7:364.46:354.412:380.81:092.57:196:14Waning Crescent25Sat
26Sun8:024.77:324.61:190.71:522.07:196:13Waning Crescent26Sun
27Mon8:275.18:234.71:560.72:321.47:206:12Waning Crescent27Mon
28Tue8:545.59:114.82:310.83:130.87:216:11Waning Crescent28Tue
29Wed9:235.810:004.83:060.93:550.27:226:10New Moon29Wed
30Thu9:556.110:524.73:421.24:40-0.27:236:09New Moon30Thu
31Fri10:316.311:484.64:191.55:29-0.67:246:08New Moon31Fri
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 4:30 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 spring phase. Tonight's moon is 83% 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 Waning Gibbous (83% 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