Bay Saint Louis (MS) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Bay Saint Louis.
Climate overview of Bay Saint Louis
Bay Saint Louis, Mississippi, United States of America, sees big temperature differences between seasons, with August peaking at 32°C (90°F) and January dropping to 16°C (61°F).
With around 1607 mm (63 in) of annual rainfall, Bay Saint Louis has a notably wet climate. However, this rainfall is not evenly distributed — the city has very warm summers and mild winters. The wettest month is August.
Bay Saint Louis Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Bay Saint Louis - and find the best time to visit.
Monthly Temperature in Bay Saint Louis
Visitors to Bay Saint Louis can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 32°C (90°F) in August. In January, the coolest month of the year, temperatures drop to a moderate 16°C (61°F).
At night, temperatures range from around 24°C (75°F) in August to 5°C (41°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Bay Saint Louis
Bay Saint Louis is known for its substantial rainfall, with annual precipitation reaching 1607 mm (63 in). Bay Saint Louis can be quite wet during August, receiving approximately 191 mm (7.5 in) of precipitation over 18 rainy days.
In contrast, during the driest month (November), you will experience much drier conditions, with 73 mm (2.9 in) of precipitation spread across 7 rainy days. For more details, please visit our Bay Saint Louis Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Bay Saint Louis
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: October and November
- Warmest weather: June, July and August
- Fewest rainy days: March, October and November
- Seasonal pattern: Very warm summers and mild winters
Frequently asked questions about the climate in Bay Saint Louis
What is the best time to visit Bay Saint Louis?
October and November typically offer the most optimal weather in Bay Saint Louis. In contrast, July and August tend to have less optimal conditions. Bay Saint Louis has very warm summers and mild winters.
What temperatures can I expect in Bay Saint Louis?
Daytime highs range from 16°C (61°F) in January to 32°C (90°F) in August. Nighttime lows range from 5°C (41°F) to 24°C (75°F). Temperatures vary considerably through the year.
How much rain does Bay Saint Louis get?
Annual rainfall is around 1607 mm (63 in). August is the wettest month with 191 mm (7.5 in), while November is the driest with 73 mm (2.9 in).
Bay Saint Louis 3-Day Forecast
Bay Saint Louis (MS) 3-Day Forecast
Bay Saint Louis on the map
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