Isalo National Park

Weather & Climate

24 Isalo Tours

Expert

By Anthony Ham

Anthony is the author of the Lonely Planet guide to Madagascar.

Climate Chart Isalo National Park – 392-1,199m / 1,286-3,934ft

Isalo National Park has a dry, tropical climate. There is little rain, but it mostly falls in the Wet season months from November to March. Temperatures are quite uniform throughout the year and average around 29°C/84°F. The hottest months are during the Wet season and at this time the humidity is also high.

Dry Season –April to October – Winter

It hardly ever rains during the Dry season. Daytime temperatures average 27°C/81°F and humidity is similarly low. Nights cool down considerably to an average of 12°C/54°F.

April & May – Some rains may linger into early April, but this is the beginning of the Dry season. It remains hot with daytime temperatures around 29°C/84°F. At night it drops to an average of 15°C/59°F.
June, July, August & September – It cools down a little to daytime temperatures of 25°C/77°F in July and nights are quite chilly at 11°C/52°F.
October – Temperatures increase slightly to an average of 30°C/86°F. If the rains come early, they may begin at the end of the month.

Wet Season –November to March – Summer

Although this is the Wet season, it rarely rains much. The first rain will come as a relief after weeks of rising temperatures and humidity. Daytime temperatures average 31°C/88°F.

November – This is the beginning of the rainy season, although rain is still very sporadic.
December, January & February – Sometime in December, the rainy season really starts. January is the peak of the rains. Humidity increases and although temperatures are only a little bit higher than in the Dry season, the heat is more oppressive.
March – It rains less and becomes more sporadic. Everything is fresh from the rains but most days are sunny.