France's climate varies by region. Paris has a temperate climate: winters are cool (3–7°C) and often grey, summers warm (20–25°C) with occasional heat waves. Spring and autumn are the most pleasant for tourism.
The South of France (Provence, Riviera) is warm and sunny almost year-round, with summers reaching 30°C+. The Alps see heavy snow November–April. Brittany in the northwest is cooler and rainier. The best time to visit Paris is May–June or September–October.