World Resorts USA Bay Saint Louis Weather

Bay Saint Louis 14 Days Forecast

02.09
wed
Day
84°F
NW 7 mph
Precip.
6%
Night
82°F
N 2 mph
Precip.
8%
03.09
thu
Day
84°F
NW 4 mph
Precip.
5%
Night
82°F
N 6 mph
Precip.
25%
04.09
fri
Day
84°F
NW 4 mph
Precip.
47%
Night
82°F
NE 11 mph
Precip.
9%
05.09
sat
Day
86°F
NE 6 mph
Precip.
57%
Night
82°F
E 9 mph
Precip.
9%
06.09
sun
Day
84°F
E 4 mph
Precip.
9%
Night
81°F
E 9 mph
Precip.
38%
07.09
mon
Day
84°F
NE 7 mph
Precip.
36%
Night
82°F
E 11 mph
Precip.
40%
08.09
tue
Day
86°F
NE 9 mph
Precip.
43%
Night
82°F
NE 12 mph
Precip.
42%
09.09
wed
Day
86°F
NE 9 mph
Precip.
6%
Night
82°F
NE 13 mph
Precip.
19%
10.09
thu
Day
84°F
N 8 mph
Precip.
6%
Night
82°F
NE 13 mph
Precip.
10%
11.09
fri
Day
84°F
N 9 mph
Precip.
9%
Night
82°F
NE 10 mph
Precip.
11%
12.09
sat
Day
84°F
NE 7 mph
Precip.
8%
Night
82°F
NE 7 mph
Precip.
10%
13.09
sun
Day
86°F
NE 6 mph
Precip.
5%
Night
82°F
NW 3 mph
Precip.
21%
14.09
mon
Day
84°F
W 6 mph
Precip.
9%
Night
84°F
NW 6 mph
Precip.
10%
15.09
tue
Day
86°F
NE 6 mph
Precip.
5%
Night
84°F
NE 9 mph
Precip.
13%

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.

Air temperature in Bay Saint Louis, °F

Precipitation total in Bay Saint Louis, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Bay Saint Louis

Sunniest months:
October 20 days
September 16 days
May 14 days
Warmest months:
July 88.5 °F
August 88.5 °F
June 86.7 °F
Warmest sea temp:
August 86.9 °F
July 86.5 °F
June 83.9 °F
Coldest months:
January 57.3 °F
February 61.0 °F
December 61.0 °F
Rainiest months:
August 4 days
July 4 days
May 4 days
Windiest months:
April 9.2 mph
March 9.1 mph
January 8.8 mph

Bay Saint Louis on a weather map

Current weather
09:45
Bay Saint Louis
+82°F
S 6 mph
Feels like: +91°F
Precip.: 12%
Places in USA:
Name
°F
Boston
+70°F
Washington
+91°F
Hawaii
+77°F
Las Vegas
+82°F
Los Angeles
+70°F
Miami
+88°F
Maui
+63°F
Myrtle Beach
+91°F
New York
+73°F
San Diego
+73°F
San Francisco
+63°F
Santa Monica
+70°F
Sarasota
+86°F
Houston
+81°F
Chicago
+75°F
all places
24 Hours Forecast
Bay Saint Louis
Local time: 09:45
September 02, wednesday
1200
84°F
NW
7 mph
1500
84°F
N
7 mph
1800
84°F
N
6 mph
2100
84°F
N
6 mph
September 03, thursday
0000
82°F
N
2 mph
0300
81°F
SE
5 mph
0600
81°F
S
5 mph
0900
81°F
SW
4 mph
Units of measurement: °C / °F