St. Louis Bay entrance Tides Today
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St. Louis Bay entrance runs a mean tidal range of about 1.5 ft. This month the highest water, 2.6 ft, comes on the morning of Oct 2, and the lowest, a -0.1 ft minus tide, on the afternoon of Oct 30.
| High tide | 3:00 AM | 2.5 ft |
| Low tide | 3:38 PM | -0.0 ft |
Today on the water at St. Louis Bay entrance
Today at St. Louis Bay entrance: high tide at 3:00 AM (2.5 ft), low tide at 3:38 PM (-0.0 ft). The National Weather Service forecast for Saturday is partly sunny then chance showers and thunderstorms with E winds 10 to 15 mph, 76°F. Wind that strong can hold water in or push it out, so the real tide may run above or below these predictions. The water at the gauge reads 70°F. Sunrise is at 7:10 AM and sunset at 6:11 PM.
| Period | Forecast | Wind | Temp |
|---|---|---|---|
| Overnight | Mostly Cloudy | NE 10 mph | 69°F |
| Saturday | Partly Sunny then Chance Showers And Thunderstorms | E 10 to 15 mph | 76°F |
Forecast: National Weather Service point forecast for this location.
Where St. Louis Bay entrance is
St. Louis Bay entrance sits at 30.3263° N, 89.3258° W on the northern Gulf of Mexico, at Bay St. Louis, MS. The station here is a live gauge in NOAA's National Water Level Observation Network, the reference network the rest of the coast's tide predictions are tied to. It has been in NOAA's records since 1978. The nearest weather station is Bay Waveland Yacht Club, MS, a shore station reporting wind and, at most sites, water temperature, right at this station.
The tide at St. Louis Bay entrance
St. Louis Bay entrance has a diurnal tide: usually one high and one low a day, with the daily rhythm shifting about 50 minutes later each day and fading near the moon's equatorial crossing. This month's predictions average 1.1 high tides a day here. The mean range from lower low to higher high is 1.8 ft, and 1.5 ft between the average high and the average low, a small tide. On an average day the higher high tops the lower high by 0.1 ft and the lower low sits 0.1 ft below the other low. For the water around it: Northern Gulf tides are diurnal, one high and one low most days with ranges of 1 to 2 ft, so wind and river stage move the water as much as the moon.
About this station
- Highest water on record: 10.9 ft on Sep 1, 2008.
- Lowest on record: -3.9 ft on Sep 2, 1985.
- The National Weather Service counts 3.3 ft as minor flooding here, 4.2 ft as moderate and 8.8 ft as major.
Datum and source
Heights on this page are feet above mean lower low water (MLLW), the zero NOAA's nautical charts use for soundings. A predicted 0.0 ft low is the average of the lower low each day; a minus tide is water below chart datum, and a 2 ft high means 2 ft more water than the chart shows. NOAA fixes MLLW at St. Louis Bay entrance from the 1983-2001 National Tidal Datum Epoch; mean higher high water is 1.8 ft above it and mean sea level 0.9 ft. The land survey datum NAVD88, the zero on topographic maps and flood maps, is 0.8 ft above MLLW here, so a water level on this page converts to NAVD88 by subtracting that amount. These datums are controlled from NOAA's Pascagoula NOAA Lab, MS gauge. Source: NOAA CO-OPS station 8747437, a National Water Level Observation Network gauge, established 1978. The tide times and heights are NOAA's official harmonic predictions for this station; TidalMap republishes them daily and does not alter them. The observed line is the gauge's own six-minute water level feed.
Tide stations near St. Louis Bay entrance
- Waveland: 3.9 mi, tides at about the same time
- Pass Christian Yacht Club, Mississippi Sound: 4.9 mi, tides about 33 min earlier
- Gulfport Harbor, Mississippi Sound: 14.7 mi, tides about 85 min earlier
- Pearlington, Pearl River: 18.3 mi, tides about 168 min later
- Biloxi: 25.9 mi, tides about 38 min earlier
TidalMapMonthly tide calendar
🌊 Biggest flood tides at St. Louis Bay entrance this month: Oct 1, Oct 2, Oct 3, Oct 4, Oct 14, Oct 15, Oct 28, Oct 29, Oct 30, Oct 31. These spring highs push water up into the grass and over the oyster rock; prime for poling into flooded marsh for tailing reds.
🔻 Negative (minus) low tides at St. Louis Bay entrance this month: Oct 28, Oct 29, Oct 30, Oct 31. These drain the flats and expose the oyster rock, prime for sight-fishing and clamming.
Best fishing times (solunar)
Major and minor solunar windows for St. Louis Bay entrance, peak feeding activity is around the moon overhead/underfoot (majors) and moonrise/moonset (minors). Score is the day's activity coefficient (0–100).
| Day | Major windows | Minor windows | Score |
|---|---|---|---|
| Today 🌖 | 4:38–6:38 AM 5:03–7:03 PM | 10:24–12:24 AM 11:58–1:58 PM | 55 |
| Sun Nov 1 🌗 | 5:38–7:38 AM 6:03–8:03 PM | — 12:45–2:45 PM | 42 |
| Mon Nov 2 🌗 | 6:34–8:34 AM 6:59–8:59 PM | 11:34–1:34 AM 1:24–3:24 PM | 33 |
| Tue Nov 3 🌗 | 7:25–9:25 AM 7:50–9:50 PM | 12:42–2:42 AM 1:59–3:59 PM | 47 |
| Wed Nov 4 🌗 | 8:13–10:13 AM 8:38–10:38 PM | 1:47–3:47 AM 2:30–4:30 PM | 61 |
| Thu Nov 5 🌘 | 8:59–10:59 AM 9:24–11:24 PM | 2:49–4:49 AM 3:00–5:00 PM | 73 |
| Fri Nov 6 🌘 | 9:44–11:44 AM 10:09–12:09 AM | 3:50–5:50 AM 3:30–5:30 PM | 83 |
Predictions & observations: NOAA CO-OPS station 8747437. Solunar windows computed from the moon's position for this location. Times shown in the station's local time. Not for navigation.
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