Weather for Bay St. Louis, Mississippi
Current Weather
Five Day Weather Forecast
Wed
H: 76°F
L: 60°F
Thu
H: 79°F
L: 65°F
Fri
H: 76°F
L: 64°F
Sat
H: 74°F
L: 62°F
Sun
H: 76°F
L: 66°F
Air Quality
Nitrogen Dioxide: 3.85 μg/m3
Sulphur Dioxide: 3.35 μg/m3
Ozone: 81 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:20 PM
Daylight: 12 hrs 42 mins
Moon Transit: 5:47 AM
Moonset: 10:44 AM
Moon Phase: Last Quarter
Moon Illumination: 53.2%
Best Times for Fishing or Hunting
Major Periods
5:17 AM - 7:47 AM5:49 PM - 8:19 PM
Minor Periods
10:14 AM - 11:44 AM12:22 AM - 1:52 AM
Action Rating: 2 out of 5
Coastal Flood Advisory issued April 7 at 11:32AM CDT until April 8 at 8:00PM CDT by NWS New Orleans LA
Effective: Tue April 7, 2026, 11:32 AM
Expires: Wed April 8, 2026, 1:45 AM
* WHAT...Minor coastal flooding expected. * WHERE...In Louisiana, Lower St. Bernard, Southeast St. Tammany and Eastern Orleans Parishes. In Mississippi, Southern Hancock County. * WHEN...From noon to 8 PM CDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Coastal Flood Advisory issued April 8 at 12:21AM CDT until April 8 at 8:00PM CDT by NWS New Orleans LA
Effective: Wed April 8, 2026, 12:21 AM
Expires: Wed April 8, 2026, 7:00 PM
* WHAT...For the first Coastal Flood Advisory, minor coastal flooding expected during high tide cycles. * WHERE...In Louisiana, Lower St. Bernard, Southeast St. Tammany and Eastern Orleans Parishes. In Mississippi, Southern Hancock County. * WHEN...For the first Coastal Flood Advisory, from noon today to 8 PM CDT this evening. For the second Coastal Flood Advisory, from 11 AM to 8 PM CDT Thursday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Additional Coastal Flood Advisories will be possible during high tide on Friday.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Coastal Flood Advisory issued April 8 at 12:21AM CDT until April 9 at 8:00PM CDT by NWS New Orleans LA
Effective: Wed April 8, 2026, 12:21 AM
Expires: Wed April 8, 2026, 7:00 PM
* WHAT...For the first Coastal Flood Advisory, minor coastal flooding expected during high tide cycles. * WHERE...In Louisiana, Lower St. Bernard, Southeast St. Tammany and Eastern Orleans Parishes. In Mississippi, Southern Hancock County. * WHEN...For the first Coastal Flood Advisory, from noon today to 8 PM CDT this evening. For the second Coastal Flood Advisory, from 11 AM to 8 PM CDT Thursday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. * ADDITIONAL DETAILS...Additional Coastal Flood Advisories will be possible during high tide on Friday.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Coastal Flood Advisory issued April 8 at 12:21AM CDT until April 9 at 8:00PM CDT by NWS New Orleans LA
Effective: Wed April 8, 2026, 12:21 AM
Expires: Wed April 8, 2026, 7:00 PM
* WHAT...Minor coastal flooding expected. * WHERE...St. John The Baptist, St. Charles, Lower Plaquemines, Western Orleans, Southwestern St. Tammany, Lower Tangipahoa, Southern Livingston and Upper Jefferson Parishes. * WHEN...From 11 AM to 8 PM CDT Thursday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.89 μg/m3
Sulphur Dioxide: 3.08 μg/m3
Ozone: 92.4 μg/m3
Astronomical
Sun Transit: 1:00 PM
Sunset: 7:20 PM
Daylight: 12 hrs 42 mins
Moon Transit: 5:47 AM
Moonset: 10:44 AM
Moon Phase: Last Quarter
Moon Illumination: 53.2%
Best Times for Fishing or Hunting
Major Periods
5:17 AM - 7:47 AM5:49 PM - 8:19 PM
Minor Periods
10:14 AM - 11:44 AM12:22 AM - 1:52 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.13 μg/m3
Sulphur Dioxide: 3 μg/m3
Ozone: 102.4 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:21 PM
Daylight: 12 hrs 44 mins
Moon Transit: 6:39 AM
Moonset: 11:40 AM
Moon Phase: Last Quarter
Moon Illumination: 41.9%
Best Times for Fishing or Hunting
Major Periods
6:09 AM - 8:39 AM6:40 PM - 9:10 PM
Minor Periods
11:10 AM - 12:40 AM1:10 AM - 2:40 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.49 μg/m3
Sulphur Dioxide: 2.06 μg/m3
Ozone: 93.44 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:22 PM
Daylight: 12 hrs 46 mins
Moon Transit: 7:29 AM
Moonset: 12:38 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%
Best Times for Fishing or Hunting
Major Periods
6:59 AM - 9:29 AM7:30 PM - 10:00 PM
Minor Periods
12:08 AM - 1:38 PM1:55 AM - 3:25 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.39 μg/m3
Sulphur Dioxide: 2.28 μg/m3
Ozone: 102.12 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:22 PM
Daylight: 12 hrs 47 mins
Moon Transit: 8:18 AM
Moonset: 1:38 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%
Best Times for Fishing or Hunting
Major Periods
7:48 AM - 10:18 AM8:17 PM - 10:47 PM
Minor Periods
1:08 PM - 2:38 PM2:33 AM - 4:03 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.61 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 94.92 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 49 mins
Moon Transit: 9:05 AM
Moonset: 2:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%
Best Times for Fishing or Hunting
Major Periods
8:35 AM - 11:05 AM9:03 PM - 11:33 PM
Minor Periods
2:09 PM - 3:39 PM3:08 AM - 4:38 AM
Action Rating: 2 out of 5