Châteaubriant

What is the climate like in Châteaubriant?

The best time to visit Châteaubriant is typically May – September, with trip comfort peaking in August (7.8/10). Châteaubriant is warmest in August, when daily highs average 77°F (25°C), and coolest in January, when lows fall to about 38°F (3°C). The wettest month is typically October and the driest is August; the year sees roughly 30 in (773 mm) of precipitation.

• Best time to visitMay – September — comfort peaks in August (7.8/10)
• Warmest monthAugust — average high 77°F (25°C)
• Coolest monthJanuary — average low 38°F (3°C)
• Wettest monthOctober (3.2 in (82 mm))
• Driest monthAugust (1.5 in (39 mm))
• Annual precipitation30 in (773 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromRennes-st Jacques, 47 km away (1945-2026)