Metropolitan France has a temperate climate. It's neither too hot nor too cold, but the weather changes significantly with the seasons.
Bring warm clothing as well as light clothing so you are ready for every season.
In the spring, from March to May, the weather is pleasant. There is mild temperature and sunshine to offset the frequent precipitation. In the summer, from June to September, it may be hot, especially in the South, but it rarely gets above 35 degrees Celsius.
From October to December, there are some beautiful days in the autumn, but it is often damp. Without being particularly hard, the winters are cold. Snow sometimes comes on the heels of rain and the temperature can dip into the negatives, especially in the mountains.