Mississippi Coast
Bay St. Louis Tide Chart
High and low tide times for the bay, the bridge & the Sound, predicted by NOAA at St. Louis Bay entrance.
Today’s tides
Wednesday, August 19- High tide4:07 AM 2.1 ft
- Low tide4:45 PM 0.6 ft
Today’s range is 1.5 ft.
See the live tide curve →Bay St. Louis tide times this week
| Day | High and low tides |
|---|---|
| Today |
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| Thursday, Aug 20 |
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| Friday, Aug 21 |
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| Saturday, Aug 22 |
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| Sunday, Aug 23 |
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| Monday, Aug 24 |
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| Tuesday, Aug 25 |
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Reading the tide at Bay St. Louis
These times come from the NOAA CO-OPS station at St. Louis Bay entrance, measured against mean lower low water (MLLW) — the datum every US chart uses, so a 1.5 ft prediction means a foot and a half above the average lowest tide, not above the bottom. Wind and pressure shift the real water level either side of the prediction: a hard onshore blow stacks water up and a strong offshore wind can pull a low tide well below what the table says.
Local tip: Water level here answers to wind at least as much as to the tide, which is small and often diurnal along this whole coast. A steady southerly stacks water into the bay and gets things going; behind a front the bay drains, clears, and pushes fish out toward the deeper channel.
For fishing, the times in the table matter less than what happens between them. Water moving is what turns the bite on, and the strongest flow is roughly midway between a high and a low — so the two hours either side of that midpoint usually beat slack water at either end, particularly around speckled trout and redfish.
Bay St. Louis tide questions
- What time is high tide at Bay St. Louis today?
- High tide at Bay St. Louis is at 4:07 AM (2.1 ft), predicted by NOAA at St. Louis Bay entrance. Wind can shift the actual water level either side of the prediction.
- What time is low tide at Bay St. Louis today?
- Low tide at Bay St. Louis is at 4:45 PM (0.6 ft). A strong offshore wind can pull the water lower than predicted, which matters on shallow flats and at boat ramps.
- How big is the tide at Bay St. Louis?
- Today's range at Bay St. Louis is about 1.5 ft. Florida's Gulf coast runs a moderate range that varies a lot by latitude — roughly two feet through the Sarasota and Charlotte Harbor beaches, building to four or five up the Nature Coast and into the Big Bend. Either way the range grows around the new and full moon — those spring tides move noticeably more water.
- Which tide is best for fishing Bay St. Louis?
- Moving water beats slack water almost everywhere. The strongest current runs roughly midway between a high and a low, so plan the two hours either side of that rather than the exact turn. First and last light overlapping a moving tide is the classic window.
Tide charts nearby
Predictions from NOAA CO-OPS station 8747437 (St. Louis Bay entrance), datum MLLW, times in Eastern. Salty Forecast is a free hyperlocal weather app for anglers. Predictions are not observations — never use them for navigation or safety-of-life decisions.