Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, October 18, 2026
The tide is currently rising in Port San Luis, CA.

Next low tide : 11:57 pm (0.7 ft)
Next high tide : in 20m at 4:00 pm (4.3 ft)
Sunset today : 6:24 pm
Sunrise tomorrow : 7:11 am
Moon phase : First Quarter (51% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 1820

< Sep 1820

Print this Tide Chart

Nov 1820 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sun	7:25	4.3	6:01	4.9	12:26	0.3	12:26	2.8	6:05	5:54		1	Sun
2	Mon	7:50	4.4	6:52	5.0	1:08	0.3	1:09	2.4	6:05	5:52		2	Mon
3	Tue	8:11	4.6	7:35	5.0	1:42	0.4	1:46	2.0	6:06	5:51		3	Tue
4	Wed	8:30	4.7	8:13	4.9	2:09	0.6	2:19	1.6	6:07	5:49		4	Wed
5	Thu	8:48	4.9	8:49	4.8	2:32	0.8	2:51	1.3	6:08	5:48		5	Thu
6	Fri	9:06	5.1	9:26	4.6	2:54	1.2	3:25	1.0	6:08	5:47		6	Fri
7	Sat	9:25	5.3	10:06	4.3	3:14	1.5	4:00	0.7	6:09	5:45		7	Sat
8	Sun	9:45	5.4	10:50	4.1	3:34	1.9	4:37	0.6	6:10	5:44		8	Sun
9	Mon	10:08	5.5	11:41	3.8	3:55	2.2	5:18	0.5	6:11	5:43		9	Mon
10	Tue	10:34	5.5			4:16	2.6	6:03	0.5	6:12	5:41		10	Tue
11	Wed	12:42	3.5	11:04 AM	5.4	4:35	2.9	6:57	0.5	6:13	5:40		11	Wed
12	Thu	2:14	3.3	11:44 AM	5.3	4:52	3.2	8:04	0.5	6:13	5:39		12	Thu
13	Fri			12:40	5.1			9:21	0.4	6:14	5:37		13	Fri
14	Sat			2:04	5.0			10:30	0.2	6:15	5:36		14	Sat
15	Sun	6:14	3.9	3:40	4.9	9:59	3.5	11:25	0.0	6:16	5:35		15	Sun
16	Mon	6:33	4.2	5:00	5.1	11:22	2.9			6:17	5:33		16	Mon
17	Tue	6:57	4.6	6:09	5.2	12:12	0.0	12:23	2.2	6:18	5:32		17	Tue
18	Wed	7:23	5.1	7:10	5.2	12:53	0.0	1:16	1.4	6:19	5:31		18	Wed
19	Thu	7:51	5.6	8:07	5.1	1:30	0.3	2:05	0.6	6:19	5:30		19	Thu
20	Fri	8:21	6.1	9:02	5.0	2:06	0.7	2:54	0.0	6:20	5:29		20	Fri
21	Sat	8:53	6.4	9:59	4.7	2:41	1.1	3:43	-0.5	6:21	5:27		21	Sat
22	Sun	9:27	6.6	10:59	4.4	3:16	1.7	4:33	-0.7	6:22	5:26		22	Sun
23	Mon	10:04	6.6			3:53	2.2	5:26	-0.8	6:23	5:25		23	Mon
24	Tue	12:05	4.1	10:45 AM	6.3	4:32	2.7	6:20	-0.6	6:24	5:24		24	Tue
25	Wed	1:19	3.9	11:29 AM	5.9	5:16	3.1	7:20	-0.3	6:25	5:23		25	Wed
26	Thu	2:50	3.8	12:21	5.4	6:12	3.4	8:27	0.0	6:26	5:22		26	Thu
27	Fri	4:20	3.9	1:27	4.9	7:41	3.6	9:38	0.3	6:27	5:20		27	Fri
28	Sat	5:22	4.1	2:53	4.5	9:45	3.5	10:41	0.4	6:28	5:19		28	Sat
29	Sun	6:03	4.3	4:18	4.3	11:11	3.1	11:32	0.6	6:29	5:18		29	Sun
30	Mon	6:34	4.5	5:27	4.3			12:09	2.6	6:29	5:17		30	Mon
31	Tue	6:58	4.7	6:25	4.2	12:13	0.7	12:54	2.1	6:30	5:16		31	Tue
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9412110)

www.USHarbors.com

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

Is this week a spring tide or neap tide in Port San Luis, CA?

Port San Luis, CA is currently in a neap phase. Tonight's moon is 51% 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 minimum.

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 First Quarter (51% illuminated). This places Port San Luis, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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

Quietly Sophisticated: The Hood 42 LM

By US Harbors At first glance, the Hood 42 LM might be confused for a boat that worked the Maine coast fifty years ago, but upon further inspection, the fifteen coats of Epifanes varnish over mahogany and custom-cast bronze hardware reveal that this boat was built for cruising. Beyond the… Learn More