All animals are active at the beginning of the rainy season in December.
The dry season last from April to November. Often Kirindy is not accessible from January to end of March. In October you may see baby lemurs. There are fewer midges at the end of the dry season.
The dry deciduous forest is absolutely worth to visit. It is privately managed and not a National Park, the reason that night walks are allowed. At the ""cool"" and dry season reptiles and amphibians are hibernating. During the rainy season the forest changes completely.
It's a two hours drive from Morondava therefore a bit crowded at daytime. Kirindy is a private reserve offering terrific night and day walks. The guides are very experienced and kind. It was a spectacular stay. We discovered several night active lemurs like Madam Berthe's Mouse Lemur, grey mouse lemur, red tailed western sportive lemur, also chameleons and the highlight was the Fossa. They offer simple bungalows and we didn't care about food. Anyway the staff is friendly and helpful, wildlife and birding is stunning. At day time you might see the verreaux's sifakas. We disvovered several with babies at the end of October.