Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 1h 23m at 5:40 am (-0.7 ft)
Next high tide : 12:36 pm (3.5 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:52 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Apr 2048

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:583.86:38-0.75:581.76:487:25Waning Gibbous1Wed
2Thu12:175.82:063.57:35-0.76:422.16:467:25Waning Gibbous2Thu
3Fri1:055.63:303.38:40-0.67:382.46:457:26Waning Gibbous3Fri
4Sat2:045.35:023.39:54-0.59:022.76:437:27Third Quarter4Sat
5Sun3:204.96:153.611:08-0.410:532.66:427:28Third Quarter5Sun
6Mon4:464.77:093.912:13-0.46:417:29Third Quarter6Mon
7Tue6:064.67:504.212:222.21:08-0.36:397:29Waning Crescent7Tue
8Wed7:154.58:244.51:291.61:54-0.16:387:30Waning Crescent8Wed
9Thu8:144.58:554.82:231.12:330.16:377:31Waning Crescent9Thu
10Fri9:054.49:225.13:080.63:080.46:357:32Waning Crescent10Fri
11Sat9:514.29:495.23:490.33:380.86:347:33New Moon11Sat
12Sun10:354.110:155.34:270.04:071.26:337:33New Moon12Sun
13Mon11:193.910:415.35:05-0.24:341.66:317:34New Moon13Mon
14Tue12:043.65:42-0.25:011.96:307:35New Moon14Tue
15Wed12:523.46:21-0.25:292.26:297:36Waxing Crescent15Wed
16Thu1:453.27:02-0.15:582.46:287:37Waxing Crescent16Thu
17Fri12:114.92:493.17:470.16:312.66:267:37Waxing Crescent17Fri
18Sat12:494.64:153.08:400.27:152.86:257:38Waxing Crescent18Sat
19Sun1:344.45:333.29:420.48:343.06:247:39First Quarter19Sun
20Mon2:364.16:223.410:450.410:362.96:237:40First Quarter20Mon
21Tue3:583.96:553.611:400.411:592.56:217:41First Quarter21Tue
22Wed5:193.87:213.912:260.46:207:42First Quarter22Wed
23Thu6:283.97:454.312:582.01:050.56:197:42Waxing Gibbous23Thu
24Fri7:314.08:114.81:471.41:420.66:187:43Waxing Gibbous24Fri
25Sat8:284.18:395.22:320.72:180.86:177:44Waxing Gibbous25Sat
26Sun9:214.19:105.73:160.02:531.06:167:45Waxing Gibbous26Sun
27Mon10:134.19:456.14:01-0.63:301.36:147:46Full Moon27Mon
28Tue11:084.010:236.34:48-1.14:091.66:137:46Full Moon28Tue
29Wed12:063.95:37-1.44:521.96:127:47Full Moon29Wed
30Thu1:073.86:30-1.45:402.26:117:48Waning Gibbous30Thu
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 9:08 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