Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 6:13 am (-0.7 ft)
Next high tide (tomorrow) : in 1h 22m at 10:33 pm (5.7 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 2049

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:024.710:125.43:580.14:020.36:487:24New Moon1Thu
2Fri10:514.510:455.54:44-0.24:360.76:477:25New Moon2Fri
3Sat11:414.211:195.55:29-0.45:101.26:457:26New Moon3Sat
4Sun12:323.96:14-0.45:441.66:447:27Waxing Crescent4Sun
5Mon1:273.57:00-0.26:192.06:427:28Waxing Crescent5Mon
6Tue12:295.12:303.37:490.06:562.36:417:28Waxing Crescent6Tue
7Wed1:094.83:513.18:440.27:402.66:407:29Waxing Crescent7Wed
8Thu1:554.45:213.19:510.48:542.86:387:30First Quarter8Thu
9Fri2:594.16:283.311:010.510:482.86:377:31First Quarter9Fri
10Sat4:203.97:123.512:010.56:367:32First Quarter10Sat
11Sun5:373.87:423.712:102.512:490.56:347:32First Quarter11Sun
12Mon6:413.98:074.01:082.11:290.56:337:33Waxing Gibbous12Mon
13Tue7:364.08:304.31:541.72:020.66:327:34Waxing Gibbous13Tue
14Wed8:244.18:534.62:331.22:320.76:307:35Waxing Gibbous14Wed
15Thu9:084.19:175.03:100.73:010.86:297:36Waxing Gibbous15Thu
16Fri9:514.19:435.33:470.23:301.06:287:36Full Moon16Fri
17Sat10:364.010:135.54:26-0.24:011.36:277:37Full Moon17Sat
18Sun11:243.910:465.75:08-0.54:341.66:257:38Full Moon18Sun
19Mon12:173.85:54-0.85:101.86:247:39Waning Gibbous19Mon
20Tue1:153.66:43-0.85:512.16:237:40Waning Gibbous20Tue
21Wed12:075.72:203.47:36-0.86:412.46:227:41Waning Gibbous21Wed
22Thu12:575.43:353.48:35-0.77:452.66:207:41Waning Gibbous22Thu
23Fri1:575.14:493.69:41-0.59:172.66:197:42Third Quarter23Fri
24Sat3:124.75:493.910:47-0.411:012.46:187:43Third Quarter24Sat
25Sun4:394.46:384.311:47-0.26:177:44Third Quarter25Sun
26Mon6:004.27:204.712:231.812:400.06:167:45Waning Crescent26Mon
27Tue7:144.27:575.11:291.21:280.36:157:45Waning Crescent27Tue
28Wed8:184.18:325.42:230.62:100.66:147:46Waning Crescent28Wed
29Thu9:144.19:055.63:110.02:490.96:137:47Waning Crescent29Thu
30Fri10:064.09:375.73:55-0.43:251.36:117:48New Moon30Fri
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 2:23 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