Saint-Louis Weather & Climate: Best Time to Visit

In Saint-Louis temperatures are generally consistent throughout the year. On average, daytime temperatures range from a very warm 33°C (91°F) in October to a comfortable 28°C (82°F) in January.

Nighttime temperatures range from 27°C (81°F) in October to 19°C (66°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Saint-Louis sits in an arid zone with minimal moisture, averaging 155 mm (6.1 in) of rainfall per year. The seasons in Saint-Louis bring significant changes in precipitation. The wettest month, August, receives moderate rainfall, with an average of 62 mm (2.4 in) of precipitation. This rainfall is distributed across 6 rainy days.

In contrast, the driest month, April, experiences much less rainfall, totaling 0.1 mm (0 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. 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

Saint-Louis enjoys sunny spells year-round. April sees up to 9.5 hours of daily sunshine, perfect for a sunny trip. June, the least sunny month, still offers a generous 7.4 hours of sun despite this cloudier time of the year.

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 August, reaching 81%. In January, the humidity drops to its lowest level at 44%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The average wind speed over the year ranges from 3 m/s (6 knots) to 6 m/s (12 knots). It is lower in August and higher in March. What does this mean?

The mean monthly wind speed over the year (meters per second)