Nantes usually experiences marine west coast climate. The weather remains mild with no dry season and warm summers. Rainfall happens throughout the year. However, heavy precipitation happens in late autumn and in winter, dominated by mid-latitude cyclones.
Summer: It starts from June to September and the temperature rises till 23.3 °C. Rainfall is at its minimum level, especially in the month of July and August.
Autumn: Autumn comes between October and November. Rainfall is at its highest level in the month of November. During daytime, the temperature rises to 16°C.
Winter: Winter falls from December to March. The temperature falls quite low and is often accompanied by rainfall, making the weather unbearable for the people in Nantes. In this season, December is considered as the coldest month.
Spring: With spring, the temperature starts increasing while the rainfall decreases to a certain level. This season continues from April to May.
Among all these seasons, April to September, i.e. spring and summer are considered as the best time to visit Nantes.