Tides Today & Tomorrow in Bay Saint Louis, MS

TIDE TIMES for Friday, August 7, 2026
The tide is currently rising in Bay Saint Louis, MS.
Next low tide : 6:59 pm (0.0 ft)
Next high tide : in 6h 02m at 6:09 am (2.2 ft)
Sunset today : 7:46 pm
Sunrise tomorrow : 6:19 am
Moon phase : Third Quarter (32% illuminated)
Tide Station Location : Station #8747437
Common Questions About Tides

Bay Saint Louis, MS Tides - Jan 1955

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:250.86:350.16:535:07First Quarter1Sat
2Sun5:391.05:26-0.26:545:08First Quarter2Sun
3Mon6:171.25:29-0.56:545:09Waxing Gibbous3Mon
4Tue7:071.46:09-0.86:545:09Waxing Gibbous4Tue
5Wed8:051.56:56-1.06:545:10Waxing Gibbous5Wed
6Thu9:061.67:43-1.16:545:11Waxing Gibbous6Thu
7Fri10:031.68:26-1.16:545:12Full Moon7Fri
8Sat10:531.59:04-1.06:555:12Full Moon8Sat
9Sun11:381.39:32-0.96:555:13Full Moon9Sun
10Mon9:49-0.66:555:14Waning Gibbous10Mon
11Tue12:181.19:57-0.46:555:15Waning Gibbous11Tue
12Wed12:540.86:430.49:56-0.29:470.36:555:16Waning Gibbous12Wed
13Thu1:250.55:460.59:350.06:545:17Waning Gibbous13Thu
14Fri4:040.76:380.06:545:17Third Quarter14Fri
15Sat4:300.95:45-0.26:545:18Third Quarter15Sat
16Sun5:061.05:21-0.36:545:19Third Quarter16Sun
17Mon5:501.15:23-0.56:545:20Third Quarter17Mon
18Tue6:401.25:54-0.76:545:21Waning Crescent18Tue
19Wed7:371.26:33-0.86:535:22Waning Crescent19Wed
20Thu8:371.37:11-0.86:535:23Waning Crescent20Thu
21Fri9:321.37:46-0.96:535:23Waning Crescent21Fri
22Sat10:211.38:16-0.96:535:24New Moon22Sat
23Sun11:031.28:40-0.86:525:25New Moon23Sun
24Mon11:431.18:55-0.76:525:26New Moon24Mon
25Tue9:02-0.56:515:27New Moon25Tue
26Wed12:210.95:300.49:03-0.48:010.36:515:28Waxing Crescent26Wed
27Thu12:590.75:010.49:05-0.29:250.26:515:29Waxing Crescent27Thu
28Fri1:370.43:230.69:020.011:110.06:505:30Waxing Crescent28Fri
29Sat2:040.13:290.94:380.06:505:30First Quarter29Sat
30Sun4:011.14:07-0.36:495:31First Quarter30Sun
31Mon4:461.34:37-0.56:485:32First Quarter31Mon
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 12:34 pm — 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 transitional phase. Tonight's moon is 32% 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 Third Quarter (32% 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