World Resorts USA Bay Saint Louis Weather

Bay Saint Louis Sea Temperature in September

Average sea water temperature in September:
+83.4°F
Minimum sea water temperature in September: 87.4°F
Maximum sea water temperature in September: 77.2°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 84.0°F. The highest and lowest sea temperatures during the month were 85.6°F and 82.2°F.

Monthly sea water temperature in Bay Saint Louis, °F

Which USA resorts have warmest sea in September?

Place name September 2025 September 2024
Key West 86.9°F 87.4°F
Key Largo 86.6°F 87.1°F
Fort Lauderdale 86.4°F 86.4°F
Everglades 86.2°F 87.0°F
West Palm Beach 86.2°F 86.4°F
Miami Beach 86.1°F 86.3°F
Naples 86.1°F 87.2°F
South Padre Island 86.0°F 85.8°F
Corpus Christi 85.8°F 84.7°F
Miami 85.8°F 86.0°F
Sanibel Island 85.7°F 87.0°F
Galveston 85.5°F 83.7°F
Houston 84.9°F 83.4°F
Siesta Key 84.9°F 86.8°F
Sarasota 84.8°F 86.7°F
Cocoa Beach 84.6°F 85.2°F
Tampa 84.3°F 86.0°F
New Orleans 84.3°F 82.9°F
St. Petersburg 84.1°F 86.1°F
Orange Beach 84.0°F 84.1°F

Best time for vacation in Bay Saint Louis

Sunniest months:
October 20 days
September 16 days
November 14 days
Warmest months:
August 88.3 °F
July 88.2 °F
June 86.7 °F
Warmest sea temp:
August 86.9 °F
July 86.4 °F
June 83.9 °F
Coldest months:
January 57.3 °F
February 60.9 °F
December 61.0 °F
Rainiest months:
August 5 days
July 5 days
June 4 days
Windiest months:
April 9.1 mph
March 9.1 mph
January 8.8 mph

Bay Saint Louis on a weather map

Bay Saint Louis
+68°F
N 8 mph
Feels like: +68°F
Precip.: 0%
Places in USA:
Name
°F
+45°F
+73°F
+73°F
+82°F
+79°F
+70°F
+72°F
+68°F
+30°F
+75°F
+66°F
+64°F
+66°F
+75°F
+39°F
24 Hours Forecast
Bay Saint Louis
Local time: 18:44
February 26, thursday
2100
63°F
NE
7 mph
February 27, friday
0000
63°F
NE
6 mph
0300
63°F
E
6 mph
0600
66°F
E
6 mph
0900
66°F
S
5 mph
1200
68°F
W
1 mph
1500
72°F
N
6 mph
1800
70°F
NE
3 mph
Units of measurement: °C / °F