Weather & Climate – Isalo NP

Philip Briggs
Expert
By Philip Briggs

Philip is a renowned Africa expert and author of many guidebooks to African destinations, including the Insight guide to Madagascar.

Philip is a renowned Africa expert and author of the Insight Guide to Madagascar.

Philip is the author of the Insight Guide to Madagascar.

Climate Chart Isalo National Park

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

* Averages based on 50 years of monthly climate data, taken from 1km² (0.39mi²) interpolated climate surfaces.
© chart & park data: SafariBookings. © climate grid data: WorldClim project. All rights reserved.

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

Dry season May to October

It hardly ever rains in the Dry season months. Daytime temperatures average at 27°C/81°F and the humidity is low. Nights cool down a lot to an average temperature of 14°C/57°F.

  • May – This is the beginning of the Dry season. It is still hot with daytime temperatures averaging 28°C/82°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 April

Although this is the Wet season, it doesn’t rain a lot. The first rain will come as a relief. Daytime temperatures average at 32°C/90°F.

  • November – This is the beginning of the rainy season. Rain is still very sporadic.
  • December, January & February – Sometime in December, the rainy season really starts. January sees the peak of the rains. The humidity increases and although temperatures are only a little bit higher than in the Dry season months, the heat is much more oppressive.
  • March – It rains less and becomes more sporadic. Everything is fresh from the rains but most days are sunny.
  • April – This is a shoulder month and the end of the Wet season. In the daytime it gets to around 30°C/86°F and at night temperatures are around 16°C/61°F.

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Isalo National Park

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