Tides Today & Tomorrow in Bay Saint Louis, MS

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in Bay Saint Louis, MS.
Next low tide : in 7h 57m at 10:27 pm (0.4 ft)
Next high tide (tomorrow) : 2:02 pm (1.8 ft)
Sunset today : 7:52 pm
Sunrise tomorrow : 6:15 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8747437
Common Questions About Tides

Bay Saint Louis, MS Tides - Jun 2082

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon3:002.21:20-0.15:557:54Waxing Crescent1Mon
2Tue3:361.91:510.05:557:55First Quarter2Tue
3Wed4:071.62:100.25:557:55First Quarter3Wed
4Thu11:351.32:170.55:557:56First Quarter4Thu
5Fri10:431.32:090.88:020.75:557:56First Quarter5Fri
6Sat8:261.67:310.35:557:57Waxing Gibbous6Sat
7Sun8:431.98:03-0.15:557:57Waxing Gibbous7Sun
8Mon9:252.18:47-0.35:547:58Waxing Gibbous8Mon
9Tue10:162.39:35-0.45:547:58Full Moon9Tue
10Wed11:092.410:25-0.45:547:59Full Moon10Wed
11Thu12:012.511:15-0.45:547:59Full Moon11Thu
12Fri12:502.45:547:59Waning Gibbous12Fri
13Sat1:352.312:01-0.35:558:00Waning Gibbous13Sat
14Sun2:162.112:37-0.15:558:00Waning Gibbous14Sun
15Mon2:531.91:000.15:558:01Waning Gibbous15Mon
16Tue3:231.61:110.35:558:01Third Quarter16Tue
17Wed3:291.31:080.55:558:01Third Quarter17Wed
18Thu9:541.212:000.79:190.75:558:01Third Quarter18Thu
19Fri7:321.48:130.55:558:02Third Quarter19Fri
20Sat7:391.67:270.35:568:02Waning Crescent20Sat
21Sun8:081.87:460.15:568:02Waning Crescent21Sun
22Mon8:501.98:21-0.15:568:02Waning Crescent22Mon
23Tue9:412.19:00-0.25:568:02Waning Crescent23Tue
24Wed10:352.29:40-0.35:578:03New Moon24Wed
25Thu11:252.310:19-0.35:578:03New Moon25Thu
26Fri12:122.310:54-0.35:578:03New Moon26Fri
27Sat12:542.411:24-0.35:578:03New Moon27Sat
28Sun1:342.311:46-0.25:588:03Waxing Crescent28Sun
29Mon2:112.15:588:03Waxing Crescent29Mon
30Tue2:481.912:010.05:598:03Waxing Crescent30Tue
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 6:14 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 96% 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 Waning Gibbous (96% 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