Bay Saint Louis
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Bay Saint Louis Weather in September

During September, Bay Saint Louis experiences very high daytime temperatures of 30°C (86°F) and cooler nights around 22°C (72°F). Expect quite a bit of rainfall. Around 140 mm (5.5 in) is typical.

Rainfall in Bay Saint Louis in September

Typically, you can expect about 11 days of rain this month, with 140 mm (5.5 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Bay Saint Louis in September

If you're visiting Bay Saint Louis in September, expect highs of 30°C (86°F) and overnight lows around 22°C (72°F). For most visitors, the main thing to prepare for is the heat during the day. Nights remain mild at 22°C (72°F), making evenings a pleasant time to be outdoors.

If you prefer dry days with pleasant temperatures, October and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

Bay Saint Louis Temperature in September

Min Temperature
22°C (72°F)
Max Temperature
30°C (86°F)
Chance of Rain
37%
Precipitation
140 mm (5.5 in)
Rainy days
11 days

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.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Bay Saint Louis in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.

What To Do in Bay Saint Louis in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Cycling
    7/10
  • Walking
    7/10
  • Camping
    6/10
  • Outdoor sports
    7/10

Bay Saint Louis 3-Day Forecast

More climate data for Bay Saint Louis

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.