Tides Today & Tomorrow in Bay Saint Louis, MS

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Bay Saint Louis, MS.
Next low tide : in 4h 31m at 9:14 pm (1.2 ft)
Next high tide (tomorrow) : 3:01 am (1.7 ft)
Sunset today : 7:38 pm
Sunrise tomorrow : 6:25 am
Moon phase : Waxing Crescent (19% illuminated)
Tide Station Location : Station #8747437
Common Questions About Tides

Bay Saint Louis, MS Tides - Jan 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:581.38:42-0.76:545:07New Moon1Sat
2Sun11:361.39:11-0.76:545:08New Moon2Sun
3Mon9:34-0.66:545:09New Moon3Mon
4Tue12:111.19:46-0.56:545:09Waxing Crescent4Tue
5Wed12:441.09:49-0.46:545:10Waxing Crescent5Wed
6Thu1:120.86:560.59:49-0.29:330.46:545:11Waxing Crescent6Thu
7Fri1:320.56:260.59:51-0.16:555:12First Quarter7Fri
8Sat5:130.79:320.06:555:13First Quarter8Sat
9Sun5:200.95:53-0.16:555:13First Quarter9Sun
10Mon5:531.15:27-0.46:555:14First Quarter10Mon
11Tue6:391.25:48-0.66:555:15Waxing Gibbous11Tue
12Wed7:351.46:27-0.96:555:16Waxing Gibbous12Wed
13Thu8:351.47:10-1.06:545:17Waxing Gibbous13Thu
14Fri9:351.57:52-1.16:545:17Full Moon14Fri
15Sat10:281.48:31-1.06:545:18Full Moon15Sat
16Sun11:161.39:03-0.96:545:19Full Moon16Sun
17Mon11:591.19:26-0.76:545:20Full Moon17Mon
18Tue9:38-0.56:545:21Waning Gibbous18Tue
19Wed12:380.86:190.49:42-0.29:110.36:535:22Waning Gibbous19Wed
20Thu1:100.55:570.49:320.011:030.26:535:23Waning Gibbous20Thu
21Fri1:310.23:260.68:290.16:535:24Third Quarter21Fri
22Sat3:590.85:26-0.16:535:24Third Quarter22Sat
23Sun4:401.05:31-0.36:525:25Third Quarter23Sun
24Mon5:261.15:38-0.56:525:26Third Quarter24Mon
25Tue6:171.15:53-0.66:515:27Waning Crescent25Tue
26Wed7:141.16:20-0.76:515:28Waning Crescent26Wed
27Thu8:151.26:51-0.76:515:29Waning Crescent27Thu
28Fri9:131.27:22-0.76:505:30Waning Crescent28Fri
29Sat10:051.27:51-0.76:505:31New Moon29Sat
30Sun10:491.18:15-0.66:495:31New Moon30Sun
31Mon11:291.08:32-0.56:485:32New Moon31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8747437)

Common Questions About Bay Saint Louis, MS Tides

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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 12:07 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 19% 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 (19% 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