Tides Today & Tomorrow in Bay Saint Louis, MS

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in Bay Saint Louis, MS.
Next low tide : 7:11 pm (0.1 ft)
Next high tide : in 3h 59m at 6:53 am (1.9 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 6:02 am
Moon phase : Waning Crescent (29% illuminated)
Tide Station Location : Station #8747437
Common Questions About Tides

Bay Saint Louis, MS Tides - Apr 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:541.64:55-0.15:456:16First Quarter1Thu
2Fri7:251.45:250.05:446:16Waxing Gibbous2Fri
3Sat1:131.15:450.24:131.05:436:17Waxing Gibbous3Sat
4Sun1:551.16:550.56:470.76:427:18Waxing Gibbous4Sun
5Mon1:531.21:081.26:580.87:570.46:417:18Full Moon5Mon
6Tue3:521.112:001.56:511.08:560.26:407:19Full Moon6Tue
7Wed12:181.89:540.06:387:19Full Moon7Wed
8Thu12:512.010:560.06:377:20Waning Gibbous8Thu
9Fri1:302.16:367:21Waning Gibbous9Fri
10Sat2:132.112:150.06:357:21Waning Gibbous10Sat
11Sun2:592.12:210.06:347:22Waning Gibbous11Sun
12Mon3:472.03:450.16:337:22Third Quarter12Mon
13Tue4:361.84:350.16:317:23Third Quarter13Tue
14Wed5:271.65:050.26:307:24Third Quarter14Wed
15Thu6:231.45:220.46:297:24Third Quarter15Thu
16Fri1:311.25:340.55:011.16:287:25Waning Crescent16Fri
17Sat1:051.25:440.76:220.96:277:26Waning Crescent17Sat
18Sun12:421.012:331.35:470.87:180.76:267:26Waning Crescent18Sun
19Mon2:311.011:47 AM1.45:161.08:030.56:257:27Waning Crescent19Mon
20Tue11:431.68:430.36:247:28New Moon20Tue
21Wed12:001.89:220.26:237:28New Moon21Wed
22Thu12:261.910:020.26:227:29New Moon22Thu
23Fri12:572.010:460.16:217:29New Moon23Fri
24Sat1:312.111:400.16:207:30Waxing Crescent24Sat
25Sun2:082.26:197:31Waxing Crescent25Sun
26Mon2:472.212:570.16:187:31Waxing Crescent26Mon
27Tue3:292.12:200.16:177:32Waxing Crescent27Tue
28Wed4:142.03:180.16:167:33First Quarter28Wed
29Thu5:021.83:590.26:157:33First Quarter29Thu
30Fri5:571.54:280.36:147:34First Quarter30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8747437)

Common Questions About Bay Saint Louis, MS Tides

Show All
What time does the tide turn (slack tide) in Bay Saint Louis, MS today?

Slack tide in Bay Saint Louis, MS is approximately 1:02 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 29% 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 Waning Crescent (29% 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