Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 9, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 9m at 11:21 am (1.1 ft)
Next high tide : 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 - Aug 2027

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:484.19:376.84:13-1.43:242.26:128:06New Moon1Sun
2Mon11:244.310:276.74:55-1.44:201.96:138:05New Moon2Mon
3Tue12:024.65:35-1.25:171.66:138:04New Moon3Tue
4Wed12:404.96:14-0.86:171.46:148:03Waxing Crescent4Wed
5Thu12:125.61:205.26:51-0.27:191.36:158:02Waxing Crescent5Thu
6Fri1:094.92:015.37:280.58:271.26:168:01Waxing Crescent6Fri
7Sat2:144.12:475.48:051.39:461.16:168:00First Quarter7Sat
8Sun3:383.43:395.48:452.011:110.96:177:59First Quarter8Sun
9Mon5:313.14:385.39:372.66:187:58First Quarter9Mon
10Tue7:333.25:405.312:290.610:55 AM3.06:197:57First Quarter10Tue
11Wed8:483.56:405.41:340.312:173.16:197:56Waxing Gibbous11Wed
12Thu9:283.77:345.52:250.01:243.06:207:55Waxing Gibbous12Thu
13Fri9:563.88:195.63:06-0.12:142.96:217:54Waxing Gibbous13Fri
14Sat10:203.98:575.63:41-0.22:522.66:227:53Waxing Gibbous14Sat
15Sun10:423.99:325.64:11-0.23:272.46:227:52Full Moon15Sun
16Mon11:044.110:055.64:39-0.14:022.26:237:50Full Moon16Mon
17Tue11:274.210:385.45:050.04:382.16:247:49Full Moon17Tue
18Wed11:504.411:135.15:290.25:171.96:257:48Full Moon18Wed
19Thu12:134.65:530.55:581.86:257:47Waning Gibbous19Thu
20Fri12:384.76:170.96:441.76:267:46Waning Gibbous20Fri
21Sat12:334.31:054.96:391.37:351.66:277:44Waning Gibbous21Sat
22Sun1:233.81:375.07:021.88:381.46:287:43Waning Gibbous22Sun
23Mon2:333.32:165.17:252.310:001.26:287:42Third Quarter23Mon
24Tue4:293.03:115.27:522.711:260.86:297:41Third Quarter24Tue
25Wed4:225.46:307:39Third Quarter25Wed
26Thu8:063.45:355.612:370.310:52 AM3.26:317:38Third Quarter26Thu
27Fri8:393.66:436.01:35-0.212:233.06:317:37Waning Crescent27Fri
28Sat9:073.97:446.32:23-0.61:332.66:327:35Waning Crescent28Sat
29Sun9:374.38:396.43:05-0.82:322.16:337:34Waning Crescent29Sun
30Mon10:074.69:316.43:44-0.83:251.66:347:33New Moon30Mon
31Tue10:405.010:216.14:22-0.74:171.16:347:31New Moon31Tue
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 2:47 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