Tides Today & Tomorrow in Bay Saint Louis, MS

TIDE TIMES for Tuesday, September 15, 2026
The tide is currently falling in Bay Saint Louis, MS.

Next low tide : in 2h 21m at 11:45 am (0.7 ft)
Next high tide (tomorrow) : 2:37 am (2.3 ft)
Sunset today : 7:02 pm
Sunrise tomorrow : 6:41 am
Moon phase : Waxing Crescent (21% illuminated)
Tide Station Location : Station #8747437
Common Questions About Tides

Bay Saint Louis, MS Tides - May 1878

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Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Wed	10:29	1.9					8:11	0.1	5:22	6:44		1	Wed
2	Thu	10:56	2.1					8:51	0.0	5:22	6:45		2	Thu
3	Fri	11:28	2.2					9:36	0.0	5:21	6:45		3	Fri
4	Sat			12:04	2.3			10:32	0.0	5:20	6:46		4	Sat
5	Sun			12:44	2.3			11:47	-0.1	5:19	6:46		5	Sun
6	Mon			1:26	2.4					5:18	6:47		6	Mon
7	Tue			2:09	2.3	1:05	-0.1			5:17	6:48		7	Tue
8	Wed			2:53	2.2	2:02	-0.1			5:17	6:48		8	Wed
9	Thu			3:39	2.0	2:42	0.0			5:16	6:49		9	Thu
10	Fri			4:25	1.6	3:09	0.2			5:15	6:50		10	Fri
11	Sat	11:44	1.3			3:22	0.5			5:14	6:50		11	Sat
12	Sun	11:09	1.3			3:20	0.8	5:46	0.8	5:14	6:51		12	Sun
13	Mon	12:46	1.1	9:40 AM	1.5	2:56	1.1	6:35	0.4	5:13	6:52		13	Mon
14	Tue	9:05	1.8					7:22	0.0	5:12	6:52		14	Tue
15	Wed	9:35	2.1					8:10	-0.2	5:12	6:53		15	Wed
16	Thu	10:16	2.3					9:00	-0.3	5:11	6:54		16	Thu
17	Fri	11:01	2.4					9:55	-0.2	5:11	6:54		17	Fri
18	Sat	11:47	2.4					10:55	-0.2	5:10	6:55		18	Sat
19	Sun			12:33	2.4			11:59	-0.1	5:09	6:56		19	Sun
20	Mon			1:17	2.3					5:09	6:56		20	Mon
21	Tue			1:59	2.1	12:54	0.0			5:08	6:57		21	Tue
22	Wed			2:38	1.9	1:31	0.2			5:08	6:57		22	Wed
23	Thu			3:10	1.6	1:55	0.3			5:07	6:58		23	Thu
24	Fri			12:07	1.4	2:08	0.5			5:07	6:59		24	Fri
25	Sat	10:45	1.3			2:04	0.7	9:03	0.8	5:07	6:59		25	Sat
26	Sun	9:35	1.4					7:11	0.7	5:06	7:00		26	Sun
27	Mon	8:23	1.6					6:40	0.4	5:06	7:00		27	Mon
28	Tue	8:34	1.8					7:08	0.2	5:06	7:01		28	Tue
29	Wed	9:04	2.0					7:44	0.0	5:05	7:02		29	Wed
30	Thu	9:43	2.1					8:23	-0.1	5:05	7:02		30	Thu
31	Fri	10:25	2.2					9:05	-0.2	5:05	7:03		31	Fri
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8747437)

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Is this week a spring tide or neap tide in Bay Saint Louis, MS?

Bay Saint Louis, MS is currently in a transitional phase. Tonight's moon is 21% 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 Bay Saint Louis, MS 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 Bay Saint Louis, MS?

Tide predictions for Bay Saint Louis, MS 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 Bay Saint Louis, MS?

Tide data for Bay Saint Louis, MS is sourced from NOAA Station #8747437. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8747437.

What is the moon phase in Bay Saint Louis, MS tonight?

Tonight the moon over Bay Saint Louis, MS is Waxing Crescent (21% illuminated). This places Bay Saint Louis, MS 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

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