Saint-Louis

What is the climate like in Saint-Louis?

The best time to visit Saint-Louis is typically June – September, with trip comfort peaking in July (8.9/10). Saint-Louis is warmest in August, when daily highs average 81°F (27°C), and coolest in January, when lows fall to about 45°F (7°C). The wettest month is typically November and the driest is July; the year sees roughly 23 in (578 mm) of precipitation.

• Best time to visitJune – September — comfort peaks in July (8.9/10)
• Warmest monthAugust — average high 81°F (27°C)
• Coolest monthJanuary — average low 45°F (7°C)
• Wettest monthNovember (3.5 in (88 mm))
• Driest monthJuly (0.4 in (10 mm))
• Annual precipitation23 in (578 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromMarseilles-marignane, 15 km away (1921-2026)