Saint-Louis Weather in May

May in Saint-Louis averages 20°C (68°F) during the day and 9°C (48°F) at night. It is the wettest month of the year, with 123 mm (4.8 in) of rainfall on average, so waterproof gear is a must.

Rainfall in Saint-Louis in May

With this being the rainiest month, having an umbrella is essential to avoid unexpected rain. Based on our climate data of the past 30 years, about 17 days of rain are anticipated, with 123 mm (4.8 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Saint-Louis in May

Temperatures in Saint-Louis in May top out at 20°C (68°F) and drop to 9°C (48°F) overnight. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Saint-Louis in May

The area experiences a moderate amount of sunshine, with approximately 188 hours of sunlight expected. This means a decent mix of sun and overcast.

For Saint-Louis itself, September generally stands out with 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.

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For a detailed overview over the year and the best time to visit France, check out our Saint-Louis's climate page.

Saint-Louis Temperature in May

Min Temperature 9°C (48°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 58%  

Precipitation 123 mm (4.8 in)  

Rainy days 17 days  

Humidity 72% *  

Sunshine 188 hours *  

Percentage Sunshine 43% *  

* Data from: Basel, Switzerland (3 KM, 2 Miles).

What to Wear in Saint-Louis in May

Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Saint-Louis in May

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

3/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit France, check out our Saint-Louis's climate page.

More climate data for Saint-Louis

Temperature Rainfall Sunshine Humidity

See the full Saint-Louis climate overview or explore weather in France.