Saint-Louis Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Saint-Louis.
Climate overview of Saint-Louis
Saint-Louis, Alsace, France, sees big temperature differences between seasons, with July peaking at 26°C (79°F) and January dropping to 6°C (43°F).
The city receives considerable rain/snowfall, with around 1199 mm (47 in) annually. May is the wettest month. Sunshine peaks in July, when the city sees around 7.9 hours of sunshine per day.
Saint-Louis Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint-Louis — and find the best time to visit.
Monthly Temperature in Saint-Louis
Visitors to Saint-Louis can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 26°C (79°F) in July to a chilly 6°C (43°F) in the coolest month, January.
Nights vary from 14°C (57°F) in July to around -1°C (30°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Saint-Louis
Saint-Louis is known for its substantial rain/snowfall, with annual precipitation reaching 1199 mm (47 in). Precipitation levels in Saint-Louis remain relatively steady throughout the year. May has the most rain, with 123 mm (4.8 in) over 17 days. In the driest month February, this drops slightly to 83 mm (3.3 in), making the city's climate fairly predictable. 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
Sunshine Hours in Saint-Louis
For those who appreciate different seasons, Saint-Louis serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.9 hours of sunshine daily, and embrace the darker days in December, offering only 1.8 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Saint-Louis by Month
The relative humidity is high throughout the year in Saint-Louis.
The city experiences its highest humidity in November, reaching 82%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Saint-Louis
The weather does bring rainfall during this period, between 95 mm (3.7 in) and 123 mm (4.8 in). Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
Frequently asked questions about the climate in Saint-Louis
What is the best time to visit Saint-Louis?
September typically offers the most optimal weather in Saint-Louis. In contrast, January, February, November and December tend to have less optimal conditions.
What temperatures can I expect in Saint-Louis?
Daytime highs range from 6°C (43°F) in January to 26°C (79°F) in July. Nighttime lows range from -1°C (30°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Saint-Louis get?
Annual rainfall is around 1199 mm (47 in). May is the wettest month with 123 mm (4.8 in), while February is the driest with 83 mm (3.3 in).
How sunny is Saint-Louis?
Saint-Louis receives around 1,701 hours of sunshine per year. July is the sunniest month with 237 hours, while December is the cloudiest with just 53 hours.
Saint-Louis 3-Day Forecast
Saint-Louis 3-Day Forecast
Saint-Louis on the map
Saint-Louis is highlighted — select any city to see its climate.
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