Measurements:
°C
°F
Bay Saint Louis
70°F
SW 10 mph
Feels like: 70°F
Precip: 6%
World Resorts USA Bay Saint Louis Weather

Bay Saint Louis Sea Water Temperature

Current Sea Water Temperature:
+72.8°F
Maximum Sea Water Temperature in October: 87.6°F
Minimum Sea Water Temperature in October: 68.2°F
Average water temperature in October: 79.2°F

Sea Water Temperature for the Last 10 Days:

October 26 72.8°F October 21 74.0°F
October 25 73.6°F October 20 75.8°F
October 24 72.4°F October 19 76.6°F
October 23 73.4°F October 18 79.4°F
October 22 73.2°F October 17 82.6°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Bay Saint Louis was 91.3°F. The maximum and minimum values were 87.8°F and 93.0°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 19 days
September 15 days
May 14 days
The most warm months:
July 92.8 °F
August 92.8 °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 4 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
F°
Boston +58
Chicago +58
Hawaii +80
Houston +74
Las Vegas +64
Los Angeles +74
Maui +72
Miami +82
New York +62
Panama City Beach +64
San Diego +74
San Francisco +60
Santa Monica +72
Tampa +72
Washington +58
24 Hours Weather Forecast
Bay Saint Louis
Local time: 23:47
27 oct, tuesday
0000 70°F
SW
10 mph
0300 68°F
W
13 mph
0600 66°F
SW
12 mph
0900 66°F
SW
11 mph
1200 70°F
W
9 mph
1500 72°F
NW
9 mph
1800 72°F
NW
8 mph
2100 72°F
NW
6 mph