Measurements:
°C
°F
Bay Saint Louis
96°F
N 6 mph
Feels like: 116°F
Precip: 6%
World Resorts USA Bay Saint Louis Weather

Bay Saint Louis Sea Water Temperature

Current Sea Water Temperature:
+90.4°F
Maximum Sea Water Temperature in August: 94.8°F
Minimum Sea Water Temperature in August: 87.8°F
Average water temperature in August: 91.0°F

Sea Water Temperature for the Last 10 Days:

August 05 90.4°F July 31 92.0°F
August 04 90.2°F July 30 91.8°F
August 03 91.2°F July 29 91.8°F
August 02 91.6°F July 28 91.6°F
August 01 91.2°F July 27 91.2°F

When is the Warmest Sea for Bay Saint Louis?

According to our data for the last three years for Bay Saint Louis the highest average sea water temperature was in August, July and June.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Bay Saint Louis was 90.7°F. The maximum and minimum values were 88.6°F and 92.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Bay Saint Louis was 90.9°F. The maximum and minimum values were 88.2°F and 92.2°F respectively.

Sea Water Temperature in June

Select Year: 2026 2025 2024

The average sea surface temperature in June 2026 for Bay Saint Louis was 87.5°F. The maximum and minimum values were 83.8°F and 90.8°F respectively.

Best Time to Visit Bay Saint Louis
The most sunny months:
October 20 days
September 16 days
May 14 days
The most warm months:
July 92.8 °F
August 92.5 °F
June 90.8 °F
Warmest sea temperature:
August 91.0 °F
July 90.5 °F
June 87.6 °F
The most cold months:
January 58.1 °F
February 62.2 °F
December 62.3 °F
The most rainy months:
August 5 days
July 4 days
May 4 days
The most windy months:
April 9 mph
March 9 mph
January 9 mph

Bay Saint Louis on the Weather Map

USA Resorts:
NAME
Boston +94
Chicago +82
Hawaii +82
Houston +102
Las Vegas +124
Los Angeles +92
Maui +78
Miami +92
Myrtle Beach +84
New York +84
San Diego +80
San Francisco +62
Santa Monica +80
Sarasota +92
Washington +88
24 Hours Weather Forecast
Bay Saint Louis
Local time: 13:24
05 aug, wednesday
1500 96°F
N
12 mph
1800 92°F
N
12 mph
2100 88°F
NE
9 mph
06 aug, thursday
0000 84°F
NE
6 mph
0300 84°F
NE
6 mph
0600 82°F
NE
6 mph
0900 88°F
E
2 mph
1200 92°F
NW
7 mph