Gulf Coast
St. Louis Bay entrance
Mississippi · NOAA station 8747437 · Tide predictions
30.3263, -89.3258
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48-hour outlook
Drag across the curve to inspect any time. Weather icons show the forecast at each high tide.
Drawn from the high/low predictions — NOAA publishes high/low only for this station.
The next seven days
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H = high tide · L = low tide · highs & lows in local time
On the water nearby
Chandeleur Island SE, LA (279) buoy · 66 mi SE · Station 42354
Wind & wave reports →
Nearby tide stations
- Waveland · 3.9 mi SW
- Pass Christian Yacht Club, Mississippi Sound · 4.9 mi E
- Cat Island · 14.1 mi SE
- Gulfport Harbor, Mississippi Sound · 14.7 mi E
- Grand Pass · 15.1 mi SE
Plan ahead
2027 tide extremes for this station
Highest predicted high tide: 2.6 ft — Sun Jun 6 · 1:01 PM
Lowest predicted low tide: -1.3 ft — Thu Jan 21 · 8:34 AM
Biggest single-day swing: 3.0 ft on Sat Jul 3
Best daytime minus tides of 2027
| Date | Low tide | Height |
|---|---|---|
| Thu Jan 21 | 8:34 AM | -1.3 ft |
| Wed Jan 20 | 7:50 AM | -1.3 ft |
| Tue Jan 19 | 7:03 AM | -1.2 ft |
| Fri Jan 22 | 9:12 AM | -1.2 ft |
| Thu Feb 18 | 7:34 AM | -1.0 ft |
| Sat Jan 23 | 9:39 AM | -0.9 ft |
| Tue Dec 14 | 9:40 AM | -0.9 ft |
| Wed Dec 15 | 10:30 AM | -0.9 ft |
| Wed Jan 6 | 8:16 AM | -0.9 ft |
| Sun Dec 26 | 8:09 AM | -0.9 ft |
157 minus tides (below 0 ft) are predicted here in 2027. The table shows up to the 10 lowest that fall between 7 AM and 7 PM — the ones worth planning a clam dig or tidepool walk around.
About this station
St. Louis Bay entrance is one of NOAA's reference tide stations — its predictions are computed directly from harmonic analysis of water levels observed here, and other nearby stations are calculated from it.
The northern Gulf runs small, mostly diurnal tides — often just one high and one low a day — where wind and river flow routinely outvote the moon.