Water Temperature of Bay of St. Louis in Bay St. Louis, MS

Current Water Temperature

85.5°F

Measurement Time: Wednesday, July 22, 2026, 12:30 PM CDT

Today's Tides

 High: July 22, 5:46 AM, 1.9 ft
Low: July 22, 6:54 PM, 0.3 ft

Temperature Locations

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Local Points of Interest

Pass Christian, MS; Mississippi Sound; Gulf of Mexico

Bay of St. Louis

Station Name: Bay Waveland Yacht Club
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 0 feet

Sensor Depth: -1 feet

Nearest Address:
1 Yacht Club Drive
Bay St. Louis, MS 39520
Hancock County

GPS Coordinates: 30.325000, -89.325000

Nearby Water Temperatures

Mississippi Sound, Pass Christian, MS (7.7 mi)
Mississippi Sound, Waveland, MS (10.9 mi)
Mississippi Sound, Biloxi, MS (21 mi)
Biloxy Bay, Biloxi, MS (28.2 mi)
Lake Borgne, Shell Beach, LA (37.8 mi)
Mississippi Sound, Pascagoula, MS (44.2 mi)
Pascagoula River, Pascagoula, MS (45.5 mi)
Cypress Creek, Brooklyn, MS (51.7 mi)
Mississippi River, New Orleans, LA (55.5 mi)
Leaf River, New Augusta, MS (64 mi)
Gulf of Mexico, Dauphin Island, AL (74.8 mi)
Bayou Gauche, Bayou Gauche, LA (75.3 mi)
Mobile Bay, Mobile, AL (78.7 mi)
Mississippi River, Pilottown, LA (79.3 mi)
Mobile River, Mobile, AL (80.9 mi)

Weather for Bay St. Louis, Mississippi

Current Weather

84.6°F
Overcast
Overcast
97.9°F
97.4°F
75%
NNE 19 mph
25.5 mph
84.4°F
79.9°F
0 in
100%
9 mi
1006 mbar
6

Five Day Weather Forecast

Sunny
Wed
H: 88°F
L: 80°F
Patchy rain nearby
Thu
H: 88°F
L: 81°F
Sunny
Fri
H: 88°F
L: 78°F
Sunny
Sat
H: 90°F
L: 77°F
Sunny
Sun
H: 92°F
L: 77°F

Air Quality

AQI: 1 - Good
PM2.5: 2.9 μg/m3
PM10: 3.5 μg/m3
Carbon Monoxide: 104 μg/m3
Nitrogen Dioxide: 0.9 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 92 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:03 PM
Sunset: 7:57 PM
Daylight: 13 hrs 48 mins
Moonrise: 2:33 PM
Moon Transit: 7:49 PM
Moonset: 12:27 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
7:19 PM - 9:49 PM

Minor Periods

2:03 PM - 3:33 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Heat Advisory issued July 21 at 10:33PM CDT until July 22 at 8:00PM CDT by NWS New Orleans LA

Effective: Tue July 21, 2026, 10:33 PM
Expires: Wed July 22, 2026, 12:45 PM

* WHAT...Heat index values up to 113 expected. * WHERE...Northern Hancock, Northern Harrison, Northern Jackson, Southern Hancock, Southern Harrison, and Southern Jackson Counties. * WHEN...From 10 AM to 8 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Heat Advisory issued July 22 at 4:35AM CDT until July 22 at 8:00PM CDT by NWS New Orleans LA

Effective: Wed July 22, 2026, 4:35 AM
Expires: Wed July 22, 2026, 6:45 PM

* WHAT...Heat index values up to 113 expected. * WHERE...Northern Hancock, Northern Harrison, Northern Jackson, Southern Hancock, Southern Harrison, and Southern Jackson Counties. * WHEN...From 10 AM this morning to 8 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.


Tropical Storm Warning issued July 22 at 9:57AM CDT by NWS New Orleans LA

Effective: Wed July 22, 2026, 9:57 AM
Expires: Wed July 22, 2026, 6:00 PM

* LOCATIONS AFFECTED - Kiln - Pearlington - Bay St. Louis - Diamondhead - Waveland * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 20-30 mph with gusts to 40 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: The sustained wind should remain less than tropical storm force. Conditions may still be gusty. - PREPARE: Listen for any instructions from local officials. - ACT: Ensure emergency readiness should the forecast change. - REALIZED IMPACTS: Being Assessed - Little to no additional wind impacts expected. Community officials are now assessing the extent of actual wind impacts accordingly. * STORM SURGE - LATEST LOCAL FORECAST: Life-threatening storm surge possible - Peak Storm Surge Inundation: The potential for 2-4 feet above ground somewhere within surge prone areas - Window of concern: through Thursday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm surge flooding greater than 3 feet above ground - The storm surge threat has remained nearly steady from the previous assessment. - PLAN: Shelter against life-threatening storm surge of greater than 3 feet above ground. - PREPARE: Flood preparations and ordered evacuations should be complete. Evacuees should be in shelters well away from storm surge flooding. - ACT: Remain sheltered in a safe location. Do not venture outside. - POTENTIAL IMPACTS: Unfolding - Potential impacts from the main surge event are unfolding. * FLOODING RAIN - LATEST LOCAL FORECAST: - Peak Rainfall Amounts: No additional significant rainfall forecast - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for localized flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should include the potential for localized flooding from heavy rain. - PREPARE: Consider protective actions if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. - POTENTIAL IMPACTS: Limited - Localized rainfall flooding may prompt a few evacuations. - Rivers and tributaries may quickly rise with swifter currents. Small streams, creeks, canals, and ditches may become swollen and overflow in spots. - Flood waters can enter a few structures, especially in usually vulnerable spots. A few places where rapid ponding of water occurs at underpasses, low-lying spots, and poor drainage areas. Several storm drains and retention ponds become near-full and begin to overflow. Some brief road and bridge closures. * TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes. * FOR MORE INFORMATION: - https://www.msema.org


Tropical Storm Warning issued July 22 at 4:18AM CDT by NWS New Orleans LA

Effective: Wed July 22, 2026, 4:18 AM
Expires: Wed July 22, 2026, 12:30 PM

* LOCATIONS AFFECTED - Kiln - Pearlington - Bay St. Louis - Diamondhead - Waveland * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 15-25 mph with gusts to 35 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: The sustained wind should remain less than tropical storm force. Conditions may still be gusty. - PREPARE: Listen for any instructions from local officials. - ACT: Ensure emergency readiness should the forecast change. - REALIZED IMPACTS: Being Assessed - Little to no additional wind impacts expected. Community officials are now assessing the extent of actual wind impacts accordingly. * STORM SURGE - LATEST LOCAL FORECAST: Life-threatening storm surge possible - Peak Storm Surge Inundation: The potential for 2-4 feet above ground somewhere within surge prone areas - Window of concern: through Thursday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm surge flooding greater than 3 feet above ground - The storm surge threat has remained nearly steady from the previous assessment. - PLAN: Shelter against life-threatening storm surge of greater than 3 feet above ground. - PREPARE: Flood preparations and ordered evacuations should be complete. Evacuees should be in shelters well away from storm surge flooding. - ACT: Remain sheltered in a safe location. Do not venture outside. - POTENTIAL IMPACTS: Unfolding - Potential impacts from the main surge event are unfolding. * FLOODING RAIN - LATEST LOCAL FORECAST: - Peak Rainfall Amounts: No additional significant rainfall forecast - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for localized flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should include the potential for localized flooding from heavy rain. - PREPARE: Consider protective actions if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. - POTENTIAL IMPACTS: Limited - Localized rainfall flooding may prompt a few evacuations. - Rivers and tributaries may quickly rise with swifter currents. Small streams, creeks, canals, and ditches may become swollen and overflow in spots. - Flood waters can enter a few structures, especially in usually vulnerable spots. A few places where rapid ponding of water occurs at underpasses, low-lying spots, and poor drainage areas. Several storm drains and retention ponds become near-full and begin to overflow. Some brief road and bridge closures. * TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes. * FOR MORE INFORMATION: - https://www.msema.org


Tropical Storm Warning issued July 22 at 9:57AM CDT by NWS New Orleans LA

Effective: Wed July 22, 2026, 9:57 AM
Expires: Wed July 22, 2026, 6:00 PM

* LOCATIONS AFFECTED - Gulfport - Biloxi - Pass Christian - Long Beach * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 20-30 mph with gusts to 40 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: Plan for hazardous wind of equivalent tropical storm force. - PREPARE: Efforts to protect property should now be underway. Prepare for limited wind damage. - ACT: Act now to complete preparations before the wind becomes hazardous. - POTENTIAL IMPACTS: Limited - Damage to porches, awnings, carports, sheds, and unanchored mobile homes. Unsecured lightweight objects blown about. - Many large tree limbs broken off. A few trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Some fences and roadway signs blown over. - A few roads impassable from debris, particularly within urban or heavily wooded places. Hazardous driving conditions on bridges and other elevated roadways. - Scattered power and communications outages. * STORM SURGE - LATEST LOCAL FORECAST: Life-threatening storm surge possible - Peak Storm Surge Inundation: The potential for 2-4 feet above ground somewhere within surge prone areas - Window of concern: through Thursday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm surge flooding greater than 3 feet above ground - The storm surge threat has remained nearly steady from the previous assessment. - PLAN: Shelter against life-threatening storm surge of greater than 3 feet above ground. - PREPARE: Flood preparations and ordered evacuations should be complete. Evacuees should be in shelters well away from storm surge flooding. - ACT: Remain sheltered in a safe location. Do not venture outside. - POTENTIAL IMPACTS: Unfolding - Potential impacts from the main surge event are unfolding. * FLOODING RAIN - LATEST LOCAL FORECAST: - Peak Rainfall Amounts: Additional around 1 inch - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for localized flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should include the potential for localized flooding from heavy rain. - PREPARE: Consider protective actions if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. - POTENTIAL IMPACTS: Limited - Localized rainfall flooding may prompt a few evacuations. - Rivers and tributaries may quickly rise with swifter currents. Small streams, creeks, canals, and ditches may become swollen and overflow in spots. - Flood waters can enter a few structures, especially in usually vulnerable spots. A few places where rapid ponding of water occurs at underpasses, low-lying spots, and poor drainage areas. Several storm drains and retention ponds become near-full and begin to overflow. Some brief road and bridge closures. * TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes. * FOR MORE INFORMATION: - https://www.msema.org


Wednesday, July 22, 2026

Weather Forecast

Sunny
88.3°F
79.9°F
83.3°F
83%
0.08 in
65%
0%
19.7 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 2.93 μg/m3
PM10: 3.43 μg/m3
Carbon Monoxide: 109.42 μg/m3
Nitrogen Dioxide: 1.84 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 81.25 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:03 PM
Sunset: 7:57 PM
Daylight: 13 hrs 48 mins
Moonrise: 2:33 PM
Moon Transit: 7:49 PM
Moonset: 12:27 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
7:19 PM - 9:49 PM

Minor Periods

2:03 PM - 3:33 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Patchy rain nearby
88.3°F
80.9°F
84.1°F
75%
0.1 in
67%
0%
19.9 mph
10.6


Air Quality

AQI: 1 - Good
PM2.5: 6.17 μg/m3
PM10: 8 μg/m3
Carbon Monoxide: 110.04 μg/m3
Nitrogen Dioxide: 2.63 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 73.25 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:03 PM
Sunset: 7:57 PM
Daylight: 13 hrs 46 mins
Moonrise: 3:30 PM
Moon Transit: 8:37 PM
Moonset: 1:02 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
8:07 PM - 10:37 PM

Minor Periods

3:00 PM - 4:30 PM
12:32 AM - 2:02 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Sunny
88.3°F
78.1°F
83.1°F
73%
0 in
7%
0%
8.7 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 10.69 μg/m3
PM10: 14.88 μg/m3
Carbon Monoxide: 103.29 μg/m3
Nitrogen Dioxide: 2.62 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 69.08 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:03 PM
Sunset: 7:56 PM
Daylight: 13 hrs 45 mins
Moonrise: 4:28 PM
Moon Transit: 9:27 PM
Moonset: 1:41 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
8:57 PM - 11:27 PM

Minor Periods

3:58 PM - 5:28 PM
1:11 AM - 2:41 AM

Action Rating: 2 out of 5

Saturday, July 25, 2026

Weather Forecast

Sunny
90.4°F
77°F
83.7°F
71%
0 in
6%
0%
9.8 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 13.3 μg/m3
PM10: 18.62 μg/m3
Carbon Monoxide: 102.37 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 63.13 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:03 PM
Sunset: 7:56 PM
Daylight: 13 hrs 44 mins
Moonrise: 5:21 PM
Moon Transit: 10:18 PM
Moonset: 2:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

9:28 AM - 11:58 AM
12:00 AM - 12:00 AM

Minor Periods

4:51 PM - 6:21 PM
1:56 AM - 3:26 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Sunny
91.5°F
77.4°F
84.9°F
68%
0 in
5%
0%
13 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 12.69 μg/m3
PM10: 16.95 μg/m3
Carbon Monoxide: 118.63 μg/m3
Nitrogen Dioxide: 5.28 μg/m3
Sulphur Dioxide: 1.84 μg/m3
Ozone: 44.63 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:03 PM
Sunset: 7:55 PM
Daylight: 13 hrs 43 mins
Moonrise: 6:12 PM
Moon Transit: 11:10 PM
Moonset: 3:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

10:19 AM - 12:49 AM
12:00 AM - 12:00 AM

Minor Periods

5:42 PM - 7:12 PM
2:45 AM - 4:15 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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