Measurements:
°C
°F
Bay Saint Louis
50°F
S 11 mph
Feels like: 44°F
Precip: 60%
World Resorts USA Bay Saint Louis Weather

Bay Saint Louis Sea Water Temperature

Current Sea Water Temperature:
+67.6°F
Maximum Sea Water Temperature in December: 70.8°F
Minimum Sea Water Temperature in December: 52.6°F
Average water temperature in December: 61.8°F

Sea Water Temperature for the Last 10 Days:

December 05 67.6°F November 30 68.4°F
December 04 67.8°F November 29 68.8°F
December 03 68.0°F November 28 69.8°F
December 02 68.0°F November 27 72.8°F
December 01 68.2°F November 26 73.6°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: 2025 2024 2023

The average sea surface temperature in July 2025 for Bay Saint Louis was 91.3°F. The maximum and minimum values were 89.8°F and 93.2°F respectively.

Sea Water Temperature in June

Select Year: 2025 2024 2023

The average sea surface temperature in June 2025 for Bay Saint Louis was 88.8°F. The maximum and minimum values were 86.0°F and 91.4°F respectively.

Best Time to Visit Bay Saint Louis
The most sunny months:
October 20 days
September 16 days
November 14 days
The most warm months:
August 92.5 °F
July 92.4 °F
June 90.8 °F
Warmest sea temperature:
August 91.0 °F
July 90.5 °F
June 87.7 °F
The most cold months:
January 58.3 °F
February 62.4 °F
December 63.1 °F
The most rainy months:
August 5 days
July 5 days
June 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
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Bay Saint Louis
Local time: 01:56
05 dec, friday
0300 50°F
S
11 mph
0600 50°F
S
8 mph
0900 48°F
S
8 mph
1200 52°F
S
9 mph
1500 56°F
S
5 mph
1800 56°F
SW
7 mph
2100 52°F
S
5 mph
06 dec, saturday
0000 52°F
S
2 mph