Madagascar Weather Month by Month
Madagascar has no single climate. The eastern rainforest records rain on roughly 210 days a year, the southwest receives under 500 mm annually, and the highlands drop close to freezing at night in winter. This guide runs through the year month by month, with the regional differences that matter more than any national average.
How Madagascar’s Climate Works
Two seasons govern the island. The dry season runs roughly April to November and the wet season December to March, peaking in January and February when cyclones make landfall.
That framework holds nationally and hides most of what matters. The eastern rainforest belt at Andasibe, Ranomafana, Masoala and Marojejy is wet in every month, with Ranomafana receiving between 1,600 and 4,000 mm a year depending where you measure.
The central highlands sit at 1,280 to 1,500 metres and are temperate rather than tropical, with genuinely cold nights from June to August. The south and southwest around Isalo, Toliara and Tsimanampetsotsa are arid, where heat rather than rain is the limiting factor. The north is drier than the east and governed by the Varatraza trade wind from May to November.
Rain on 210 days a year at Andasibe, under 500 mm annually at Tsimanampetsotsa, and frost on the Andringitra plateau. One country, and no useful national average.
January, February and March
January is the wettest month and the height of cyclone season. Andasibe records around 313 mm. The RN8 north from Morondava floods, closing Tsingy de Bemaraha in practice, and Kirindy Forest becomes unreachable from mid-January.
February is the peak for cyclones, which make landfall mainly on the east and northeast. Recent seasons have cut the RN2 between Antananarivo and Toamasina, stopped ferries and disrupted flights.
March continues wet, with the western parks still closed and rainforest trails at their muddiest. Tracks to the outer parcels of Andohahela and to Anjohibe deteriorate.
What these months offer is reptiles and amphibians at their most active, night walks at their most productive, rainforest at its richest, and the lowest prices of the year with no crowds. Travellers with flexibility and an interest in herpetology do come, and the ones on fixed schedules regret it.
April, May and June
April is transitional. Rains ease, tracks begin drying and the western route to Tsingy de Bemaraha usually reopens somewhere in this window, though the exact date shifts each year. Confirm with an operator rather than assuming.
May is when Madagascar becomes reliably accessible again. Ankarana’s caves reopen, Baie de Baly and Namoroka become reachable, and river crossings at Marojejy drop to safe levels. The country is green from the rains and visitor numbers are low.
June brings the first genuinely cool nights in the highlands. Trail conditions are good, reptiles are still reasonably active, and prices sit below peak. Ankarana’s western sector remains closed until July.
This is the value window: good conditions, few visitors and rates below the July to October peak.
Best for wildlife. September to November. Infant lemurs from September, reptiles active again, birds breeding and calling, orchids flowering, weather settled.
Best for access. July to September. Driest, firmest roads, all parks open including Namoroka, Baie de Baly and Ankarana’s western sector. Coldest highland nights.
Best for value. April to June and November. Green country, moderate prices, low visitor numbers and reliable conditions across most regions.
July, August and September
July is the coldest month. Highland nights at Antsirabe and Fianarantsoa drop close to freezing, the Andringitra plateau records frost, and hotels rarely have heating. Days are mild and clear.
Humpback whales arrive in the channel off Île Sainte-Marie and along the Nosy Be coast, staying through September. Ankarana’s western sector opens.
August is the driest month across most of the country and the peak of the tourist season. Road conditions are at their most reliable, summit views at Andringitra and Marojejy are clearest, and lodges fill months ahead.
Reptiles and amphibians are sluggish or hidden in the cool, which is the trade-off for the road access. In the far north the Varatraza wind blows hard, making Emerald Sea crossings wet and cold while suiting kitesurfers at Sakalava Bay.
September begins the strongest wildlife window. Infant lemurs appear, clinging to their mothers and later riding on their backs. Birds start breeding and calling, which makes the ground-rollers and mesites findable. Whale season continues.
October, November and December
October is widely rated the best single month in Madagascar. Weather warm and settled, infant lemurs everywhere, reptiles active again after the cool season, jacarandas flowering around Lac Anosy in the capital, and visitor numbers below the mid-year peak.
Fossa are mating at Kirindy Forest through October and November, which is when sightings become realistic rather than lucky. Elephant’s foot pachypodiums flower across the rock at Isalo.
November holds most of October’s advantages with fewer people and slightly lower prices. Roads remain reliable and the wet season has not properly arrived. Chameleons and frogs become considerably more active.
December is the turn. Rain builds, the RN8 north deteriorates, and lychee season floods the east coast markets. The far north around the Emerald Sea has its calmest water and best snorkelling clarity in this window while the east becomes unreliable.
Several parks close seasonally and this catches travellers out more than the weather itself. Tsingy de Bemaraha shuts roughly December to March, Baie de Baly and Tsingy de Namoroka open only around May to October, Ankarana’s caves close through the rains with its western sector open July to November only, and Kirindy Forest is unreachable mid-January to late March. Check your target parks against the calendar before booking flights.
Regional Weather Differences
The month you choose matters less than matching it to your route.
Eastern rainforest. Wet all year with a wetter peak from December to March. Pack a waterproof for any month. Cyclone-exposed. Andasibe, Ranomafana, Masoala, Marojejy, Sainte-Marie.
Central highlands. Temperate, with cold nights June to August and heavy afternoon rain December to March. Antananarivo, Antsirabe, Fianarantsoa, Andringitra.
South and southwest. Arid, under 500 mm a year in places, with heat rather than rain the constraint. Walking is a matter of timing the day rather than the month. Isalo, Toliara, Tsimanampetsotsa, Mikea.
West. Strongly seasonal with a hard closure December to March when the RN8 floods. Morondava, Kirindy, Tsingy de Bemaraha, Belo sur Mer.
North. Drier than the east and dominated by the Varatraza trade wind May to November. Diego Suarez, Amber Mountain, Ankarana, Nosy Be.
Cyclones and What They Mean in Practice
Cyclones form in the Indian Ocean and make landfall mainly between January and March, with February the peak. The east coast and northeast take the worst of it.
The practical consequences are what matter to a traveller. Roads get cut, ferry crossings stop, domestic flights are disrupted, and lodges in exposed areas close for the season.
This does not put the whole island off-limits. The northwest around Nosy Be sees considerably less impact than the east, and the arid southwest receives little rain at any time. What nobody should do is book a tight itinerary through the east in February and assume it will run.
Temperature and Rainfall by Region
Rough figures help set expectations, though local variation is considerable.
The eastern rainforest averages around 1,700 mm at Andasibe and between 1,600 and 4,000 mm at Ranomafana, with humidity frequently between 90 and 97 percent. Masoala and Marojejy are wetter still. Temperatures are mild rather than hot, and rain falls in every month.
The highlands average near 19 degrees at Fianarantsoa across the year, with January around 21 and July considerably cooler. Antananarivo at 1,280 metres and Antsirabe at 1,500 both see nights close to freezing in winter, and Andringitra records frost.
The south and southwest receive under 500 mm at Tsimanampetsotsa with a dry season of seven to nine months, and temperatures above 23 degrees year-round. Mikea sees rain on only a handful of days, mostly in February.
The west around Morondava runs around 27 degrees in the dry season with cooler nights, and the wet season concentrates most of the annual rainfall into a few months. Amber Mountain in the north records around 3,500 mm against roughly 1,000 in Antsiranana below it, which shows how much altitude changes within a short distance.
Frequently Asked Questions
What is the best month to visit Madagascar?
October for most visitors, with warm settled weather, infant lemurs, active reptiles and visitor numbers below the July to August peak. September and November are close behind. Choose August instead if humpback whales are the priority, or May and June for value with reliable conditions.
Which is the wettest month?
January, at the height of the wet season, with Andasibe recording around 313 mm. February is the peak for cyclones. Both months see the western parks closed, rainforest trails at their muddiest and eastern travel unreliable, though reptiles and amphibians are at their most active.
How cold does it get?
Colder than most visitors expect. Highland nights at Antsirabe and Fianarantsoa drop close to freezing from June to August, and hotels rarely have heating. The Andringitra plateau records the lowest temperatures in Madagascar, with frost normal. Coastal areas stay warm year-round.
Can I visit during cyclone season?
With caveats. The northwest around Nosy Be and the arid southwest see far less impact than the east coast and highlands. Rainforest parks are at their greenest and reptiles at their most active. Build slack into the schedule, avoid tight connections and eastern ferry crossings, and accept that several parks will be closed.
Does the whole country share one season?
No, and this is the most common planning mistake. The eastern rainforest is wet in every month, the southwest is arid year-round, the highlands are cold in winter and the north is governed by trade winds from May to November. Timing should follow your route rather than a national average.
When do the parks close?
Tsingy de Bemaraha roughly December to March when the road floods. Baie de Baly and Tsingy de Namoroka are accessible only around May to October. Ankarana’s caves shut through the rains and its western sector opens July to November only. Kirindy Forest is unreachable mid-January to late March. Most other parks stay open with muddier trails.
When is whale season?
Roughly July to September, when humpbacks migrate from Antarctic waters to breed and calve. Île Sainte-Marie offers the most accessible viewing, with the channel between the island and the mainland acting as a nursery. Nosy Be and the Toliara coast also see them. Whale sharks are separate, appearing off Nosy Be from around September into December.
What should I pack for the weather?
A waterproof jacket regardless of month, since the eastern rainforest rains on roughly 210 days a year. Warm layers for the highlands, including a fleece and hat from June to August. Sun protection for the exposed south and the tsingy parks. Dry bags for cameras in any season.
Planning Your Trip
The useful question is not which month is best but which month suits your route and your priorities. Whales pin you to August, infant lemurs to October, chameleons and frogs to the wet months most guides tell you to avoid, and Tsingy de Bemaraha rules out December through March entirely.
Booking Your Madagascar Trip
The safari companies and tour operators listed on this website put trips like this together for a living and know which camps, guides and routes actually deliver. We are an independent guide to Madagascar; we do not book or sell tours ourselves.
When you are ready, arrange your safari, tour or holiday with one of the recognised operators listed here. Tell them your dates and what matters most, and a real person, not a form, will handle the itinerary, park bookings and logistics for you.