Madagascar is located between the Equator and the Tropic of Cancer. On the whole, the main island and the many smaller islands that lie off its coast enjoy a tropical climate, but being a large country, Madagascar has many different climatic variations. It is generally felt that the best time to visit is between May and November, which are the winter months. Between April and June you will likely see more rain interspersed with lots of sunshine. On our family adventure of Madagascar the optimum time for travel is July to November.
The summer generally runs from November to April. During this time, temperatures are fairly high, with an average of between 21°C / 70°F and 27°C / 81°F. In Antananarivo, summertime temperatures have been known to reach a record high of 35°C / 95°F. This time of year also sees a fair amount of rain. From January to March, there's a greater risk of tropical cyclones. These strong winds tend to cause the most damage in coastal areas.
Within Madagascar, there are considerable geographical climate variations. For example, the central highlands tend to be generally cooler because of their altitude. They also tend to see less in the way of rainfall. Over on the east coast, however, there's more chance of rain, whether you are visiting in the summer or winter. Visitors looking for sunshine should head to the west coast, particularly down in the south, which is the driest part of the island.