World Resorts USA Bay Saint Louis Weather

Bay Saint Louis 14 Days Forecast

23.09
wed
Day
84°F
W 7 mph
Precip.
4%
Night
82°F
NE 2 mph
Precip.
17%
24.09
thu
Day
81°F
W 13 mph
Precip.
25%
Night
81°F
W 16 mph
Precip.
18%
25.09
fri
Day
77°F
W 11 mph
Precip.
4%
Night
79°F
NW 7 mph
Precip.
9%
26.09
sat
Day
79°F
NW 5 mph
Precip.
16%
Night
81°F
N 5 mph
Precip.
15%
27.09
sun
Day
81°F
S 2 mph
Precip.
14%
Night
81°F
NE 6 mph
Precip.
12%
28.09
mon
Day
79°F
NW 7 mph
Precip.
6%
Night
81°F
N 12 mph
Precip.
5%
29.09
tue
Day
82°F
NW 12 mph
Precip.
9%
Night
81°F
N 14 mph
Precip.
31%
30.09
wed
Day
81°F
NE 11 mph
Precip.
62%
Night
79°F
NE 11 mph
Precip.
63%
01.10
thu
Day
79°F
SW 8 mph
Precip.
5%
Night
77°F
SW 9 mph
Precip.
6%
02.10
fri
Day
79°F
SW 9 mph
Precip.
2%
Night
75°F
SW 14 mph
Precip.
2%
03.10
sat
Day
77°F
S 12 mph
Precip.
1%
Night
73°F
S 12 mph
Precip.
1%
04.10
sun
Day
75°F
W 6 mph
Precip.
1%
Night
77°F
N 4 mph
Precip.
5%
05.10
mon
Day
77°F
W 7 mph
Precip.
4%
Night
79°F
NW 10 mph
Precip.
15%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 86.4°F. The highest and lowest sea temperatures during the month were 87.3°F and 85.3°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 77.8°F. The highest and lowest sea temperatures during the month were 83.5°F and 71.8°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
00:26
Bay Saint Louis
+82°F
SE 2 mph
Feels like: +88°F
Precip.: 7%
Places in USA:
Name
°F
Boston
+57°F
Washington
+59°F
Hawaii
+79°F
Las Vegas
+84°F
Los Angeles
+72°F
Miami
+82°F
Maui
+66°F
New York
+61°F
Panama City Beach
+77°F
San Diego
+70°F
San Francisco
+59°F
Santa Monica
+70°F
Sarasota
+79°F
Houston
+84°F
Chicago
+59°F
all places
24 Hours Forecast
Bay Saint Louis
Local time: 00:26
September 23, wednesday
0300
81°F
S
6 mph
0600
79°F
S
6 mph
0900
81°F
SW
9 mph
1200
84°F
W
7 mph
1500
84°F
N
11 mph
1800
84°F
N
7 mph
2100
84°F
NE
3 mph
September 24, thursday
0000
82°F
NE
2 mph
Units of measurement: °C / °F