Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 8:20 am (0.3 ft)
Next high tide : in 37m at 1:10 am (4.5 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waning Gibbous (71% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Apr 2056

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:364.811:455.65:29-0.25:330.46:487:25Full Moon1Sat
2Sun12:344.46:23-0.56:120.96:467:25Waning Gibbous2Sun
3Mon12:265.61:383.97:20-0.56:551.56:457:26Waning Gibbous3Mon
4Tue1:125.52:563.58:24-0.57:452.16:437:27Waning Gibbous4Tue
5Wed2:045.24:333.49:37-0.38:542.56:427:28Third Quarter5Wed
6Thu3:104.96:053.510:55-0.310:372.76:417:29Third Quarter6Thu
7Fri4:314.67:153.812:06-0.36:397:29Third Quarter7Fri
8Sat5:504.58:034.012:112.51:07-0.36:387:30Third Quarter8Sat
9Sun7:004.58:384.21:222.11:57-0.36:377:31Waning Crescent9Sun
10Mon7:584.59:084.42:151.72:38-0.16:357:32Waning Crescent10Mon
11Tue8:454.59:334.52:571.33:120.16:347:33Waning Crescent11Tue
12Wed9:274.59:564.73:331.03:410.36:337:33Waning Crescent12Wed
13Thu10:054.310:184.84:070.74:080.66:317:34New Moon13Thu
14Fri10:434.210:414.94:400.54:331.06:307:35New Moon14Fri
15Sat11:224.011:044.95:140.34:571.36:297:36New Moon15Sat
16Sun12:053.75:500.25:221.66:277:37New Moon16Sun
17Mon12:513.56:280.25:482.06:267:38Waxing Crescent17Mon
18Tue1:453.37:090.26:152.36:257:38Waxing Crescent18Tue
19Wed12:264.82:553.17:560.26:462.66:247:39Waxing Crescent19Wed
20Thu1:024.64:333.18:530.37:282.96:237:40Waxing Crescent20Thu
21Fri1:494.45:593.210:020.38:563.16:217:41First Quarter21Fri
22Sat2:584.26:493.511:090.210:583.06:207:42First Quarter22Sat
23Sun4:244.27:213.812:070.06:197:42First Quarter23Sun
24Mon5:444.37:504.112:172.612:56-0.16:187:43First Quarter24Mon
25Tue6:524.48:184.51:162.01:40-0.16:177:44Waxing Gibbous25Tue
26Wed7:544.68:475.02:071.32:21-0.16:167:45Waxing Gibbous26Wed
27Thu8:514.79:195.42:550.62:590.16:147:46Waxing Gibbous27Thu
28Fri9:454.79:535.83:43-0.13:380.46:137:47Full Moon28Fri
29Sat10:414.510:306.14:31-0.74:170.86:127:47Full Moon29Sat
30Sun11:394.311:106.25:22-1.04:581.36:117:48Full 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 4:45 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 transitional phase. Tonight's moon is 71% 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 Waning Gibbous (71% 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