Saint-Louis Weather & Climate: Best Time to Visit

The temperature in Saint-Louis remains steady throughout the year, providing a consistently comfortable climate. Average daytime temperatures reach a comfortable 29°C (84°F) in September. In February, the coolest month of the year, temperatures drop to a comfortable 27°C (81°F).

At night, temperatures range from around 26°C (79°F) in September to 24°C (75°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Saint-Louis has a relatively rainy climate with high precipitation levels, averaging 1262 mm (50 in) of rainfall annually. Saint-Louis can be quite wet during October, receiving approximately 159 mm (6.3 in) of precipitation over 19 rainy days.

In contrast, during the driest month (March), you will experience much drier conditions, with 48 mm (1.9 in) of precipitation spread across 14 rainy days days. For more details, please visit our 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

Despite minor fluctuations, Saint-Louis enjoys a fairly consistent amount of sunshine throughout the year. In August, you can expect approximately 8.3 hours of daily sunshine, while even in November, Saint-Louis still receives about 6.9 hours.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Saint-Louis.

The city experiences its highest humidity in September, reaching 82%. In February, the humidity drops to its lowest level at 77%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year