Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 5h 23m at 7:17 am (-0.4 ft)
Next high tide : 2:14 pm (3.8 ft)
Sunset today : 11:27 pm
Sunrise tomorrow : 9:00 am
Moon phase : Waning Gibbous (88% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Dec 2040

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:165.88:263.812:451.72:170.210:007:57Waning Crescent1Sat
2Sun7:456.19:173.91:192.02:56-0.410:017:57New Moon2Sun
3Mon8:176.410:113.91:552.23:39-0.910:027:57New Moon3Mon
4Tue8:536.611:073.92:332.54:25-1.210:037:57New Moon4Tue
5Wed9:346.73:152.75:13-1.410:037:57New Moon5Wed
6Thu12:053.910:20 AM6.54:032.96:04-1.310:047:57Waxing Crescent6Thu
7Fri1:053.911:12 AM6.25:013.06:57-1.110:057:57Waxing Crescent7Fri
8Sat2:084.012:105.76:123.17:53-0.810:067:57Waxing Crescent8Sat
9Sun3:094.21:195.17:413.18:51-0.410:067:58First Quarter9Sun
10Mon4:024.52:424.59:252.79:470.110:077:58First Quarter10Mon
11Tue4:484.94:124.010:542.110:390.510:087:58First Quarter11Tue
12Wed5:305.35:383.712:061.410:097:58First Quarter12Wed
13Thu6:085.66:573.61:040.710:097:58Waxing Gibbous13Thu
14Fri6:445.98:033.712:111.51:520.110:107:59Waxing Gibbous14Fri
15Sat7:176.19:003.712:531.92:35-0.410:117:59Waxing Gibbous15Sat
16Sun7:506.29:523.71:312.33:15-0.710:117:59Full Moon16Sun
17Mon8:216.110:403.72:072.63:53-0.810:128:00Full Moon17Mon
18Tue8:536.011:253.72:422.84:30-0.810:128:00Full Moon18Tue
19Wed9:265.93:172.95:07-0.710:138:01Full Moon19Wed
20Thu12:093.710:00 AM5.73:553.05:44-0.510:148:01Waning Gibbous20Thu
21Fri12:523.710:36 AM5.44:363.16:21-0.310:148:02Waning Gibbous21Fri
22Sat1:373.711:14 AM5.15:243.16:58-0.110:148:02Waning Gibbous22Sat
23Sun2:253.711:55 AM4.66:203.27:370.210:158:03Waning Gibbous23Sun
24Mon3:113.912:434.27:343.18:180.510:158:03Third Quarter24Mon
25Tue3:514.11:483.79:122.99:000.910:168:04Third Quarter25Tue
26Wed4:254.33:183.310:382.59:421.210:168:05Third Quarter26Wed
27Thu4:554.64:523.111:431.810:251.610:168:05Third Quarter27Thu
28Fri5:265.06:193.112:351.110:178:06Waning Crescent28Fri
29Sat5:585.47:323.21:190.410:178:07Waning Crescent29Sat
30Sun6:345.98:293.42:02-0.410:178:07Waning Crescent30Sun
31Mon7:136.39:273.612:402.42:44-1.010:178:08Waning Crescent31Mon
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 10:45 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 88% 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 (88% 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