Great weather is one of the main reasons the French Riviera has attracted so many people to its shores during the last two centuries. For example, Nice boasts some 2900 hours of sunshine every year. The French Riviera is rarely cold or hot. Menton on the Italian border has the best climate of all with mild temperatures and almost no rains. The Riviera is specially appreciated by retired people in winter when most of Europe is much colder. The French Riviera is rarely struck by winds or snow. Bad luck if this happens during your stay.
The summer is warm and sunny, rarely hot. The weather in summer is rarely unpleasant. July and August are the touristic and crowded months. Avoid them if you can. September is wonderful. It may rain in fall, but this season is pleasant and quite. Winter is generally mild and attracts many retired people from Paris and northern Europe. Spring is gorgeous with pleasant temperatures and flowers everywhere. You are in paradise.
As shown on the graphics, it rains moderately on the French Riviera. June, July and August are very dry. October and November are a little bit more rainy.
The weather on the French Riviera is predictable. You can plan your trip in advance.