Tides Today & Tomorrow in Bay Saint Louis, MS

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

Next low tide : in 6h 19m at 9:54 pm (1.0 ft)
Next high tide (tomorrow) : 2:47 am (1.4 ft)
Sunset today : 7:39 pm
Sunrise tomorrow : 6:24 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #8747437
Common Questions About Tides

Bay Saint Louis, MS Tides - Nov 1939

< Oct 1939

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Dec 1939 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Wed	12:59	2.2			11:30	0.3			6:11	5:10		1	Wed
2	Thu	1:41	2.1					12:55	0.3	6:11	5:09		2	Thu
3	Fri	2:28	2.0					1:59	0.3	6:12	5:09		3	Fri
4	Sat	3:20	1.8					2:42	0.4	6:13	5:08		4	Sat
5	Sun	4:19	1.6	11:16	1.4			3:09	0.6	6:14	5:07		5	Sun
6	Mon	5:35	1.3	11:08	1.3	2:48	1.2	3:24	0.8	6:15	5:06		6	Mon
7	Tue	11:41	1.2	10:51	1.4	4:27	0.9	3:30	1.0	6:15	5:06		7	Tue
8	Wed			9:03	1.6	5:36	0.6			6:16	5:05		8	Wed
9	Thu			9:22	1.8	6:33	0.4			6:17	5:04		9	Thu
10	Fri			9:58	2.0	7:24	0.2			6:18	5:04		10	Fri
11	Sat			10:39	2.1	8:12	0.0			6:19	5:03		11	Sat
12	Sun			11:20	2.1	8:58	0.0			6:20	5:02		12	Sun
13	Mon					9:46	0.0			6:20	5:02		13	Mon
14	Tue	12:02	2.1			10:35	0.1			6:21	5:01		14	Tue
15	Wed	12:44	2.0			11:29	0.2			6:22	5:01		15	Wed
16	Thu	1:25	1.8					12:23	0.2	6:23	5:00		16	Thu
17	Fri	2:07	1.6					1:11	0.3	6:24	5:00		17	Fri
18	Sat	2:47	1.4	11:36	1.2			1:48	0.4	6:25	4:59		18	Sat
19	Sun			10:38	1.2			2:12	0.6	6:25	4:59		19	Sun
20	Mon			10:07	1.2			2:15	0.7	6:26	4:59		20	Mon
21	Tue			9:07	1.2	7:47	0.7			6:27	4:58		21	Tue
22	Wed			8:39	1.4	5:43	0.5			6:28	4:58		22	Wed
23	Thu			8:57	1.5	6:20	0.2			6:29	4:58		23	Thu
24	Fri			9:27	1.7	6:58	0.1			6:30	4:57		24	Fri
25	Sat			10:02	1.8	7:36	-0.1			6:30	4:57		25	Sat
26	Sun			10:40	1.9	8:14	-0.2			6:31	4:57		26	Sun
27	Mon			11:19	1.9	8:53	-0.3			6:32	4:57		27	Mon
28	Tue			11:59	1.9	9:34	-0.3			6:33	4:56		28	Tue
29	Wed					10:18	-0.3			6:34	4:56		29	Wed
30	Thu	12:40	1.8			11:04	-0.2			6:35	4:56		30	Thu
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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What time does the tide turn (slack tide) in Bay Saint Louis, MS today?

Slack tide in Bay Saint Louis, MS is approximately 12:20 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 Bay Saint Louis, MS?

Bay Saint Louis, MS is currently in a spring phase. Tonight's moon is 11% 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 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 (11% illuminated). This places Bay Saint Louis, MS 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

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