Saint-Louis Weather in September

September in Saint-Louis typically sees daytime highs of 32°C (90°F) and nighttime lows of 27°C (81°F). Expect some rainfall during the month.

Rainfall in Saint-Louis in September

The climate data from previous years indicates about 6 days of rain, averaging 58 mm (2.3 in) for the month. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.

Temperature in Saint-Louis in September

September in Saint-Louis brings very high temperatures, with highs of 32°C (90°F) and nights around 27°C (81°F). Mornings and evenings are often more comfortable than the peak afternoon hours. At 27°C (81°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help.

Sunshine in Saint-Louis in September

There are approximately 228 hours of sunshine this month, resulting in mostly clear days.

Wind Speed in Saint-Louis in September

In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Saint-Louis. Our weather planner can help you explore destinations with more pleasant weather conditions.