March in Brest averages a daily high of 6°C with nights around -1.5°C. Expect roughly 13.4 wet days totalling 33.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Brest is May–September.
Based on BREST, BO (2.5km), 1995–2024. 15 years of March data.