Andasibe-Mantadia National Park weather by month
The best time to visit Andasibe-Mantadia National Park is June, August and September — 92/100 in September, 22°C and 8 rainy days. The best season is winter, June to August (89/100 on average).
The worst month is January at 56/100 — warm, soaked, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Madagascar →
Best season: June to August (89/100 on average) · worst January (56/100)
- Days
- 22°C
- Nights
- 13°C
- Wet days
- 8
- Sun
- 9.8 h
- Humidity
- 81%
- Daylight
- 12 h

Andasibe-Mantadia National Park, month by month
Comfort score out of 100 for the kind of trip Andasibe-Mantadia National Park is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
Crowds in Andasibe-Mantadia National Park in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Busyschool holidays in 2 of the markets that fill it, one of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Traveller notes on Andasibe-Mantadia National Park
What people who have been say about the place — the year-round notes first, then month by month.
Andasibe-Mantadia-forum reviews on a January visit describe real steady rain as a standard feature, one visitor recalling near-constant downpours yet still hearing the Indri's haunting calls echo through the forest each morning. Regulars call January genuinely deep in the wet season, several posters naming this the tradeoff for visiting when the forest is lushest and most active. Posters call Indri sightings still genuinely reliable despite the rain, several regulars naming black-and-white ruffed, red-bellied and bamboo lemurs as other real highlights spotted on January visits. Regulars call a real poncho and waterproof bag essential gear here, several threads warning trails turn muddy once rain sets in. Posters recommend an early start regardless of weather, several regulars calling this standard given how much louder Indri calls carry before the day heats up. The record: 26.8C days, 18C nights, an extraordinarily high 330.5mm across 24 days and 86 percent humidity.
Andasibe-Mantadia-forum reviews on a May visit describe this as genuinely one of the real ideal months for lemur viewing, posters naming April, May, October, November as the best windows. Regulars call the Analamazaotra Special Reserve the real spot for indri specifically, several posters warning not to expect close encounters since the animals stay up in the canopy rather than coming down. Posters call Mantadia, roughly twenty kilometers north, a real complement to the main reserve, several regulars naming black-and-white ruffed lemurs and diademed sifaka as species found only there. Regulars call an early start genuinely essential regardless of section, several threads warning animal activity drops off noticeably later in the morning. Posters recommend a local guide for either section on a May visit, several regulars calling this standard for spotting species easy to miss alone. The record: 22.9C days, 15.2C nights, 60.1mm across 14 days and 85 percent humidity.
Andasibe-Mantadia-forum reviews on a July visit describe conditions as genuinely cool and misty, posters naming this a real contrast to the warmer, wetter months earlier in the year. Regulars call July genuinely within the highland cooler stretch, several posters naming lower rainfall and cooler temperatures as standard for a winter visit here. Posters call the Indri still genuinely active despite cooler weather, several regulars naming morning calls as reliably audible even on misty days. Regulars call layered clothing a real necessity for July, several threads warning mornings can feel considerably colder than visitors expect from a tropical rainforest destination. Posters recommend an early start regardless of mist, several regulars calling this standard given how much clearer visibility tends to be before midday haze builds. The record: 19.3C days, 12.6C nights, 44.3mm across nearly 17 days and 87 percent humidity.
Andasibe-Mantadia-forum reviews on an August visit describe hearing the indri's call as genuinely one of the most memorable parts of a visit, posters calling the sound carrying through the canopy a real highlight regardless of dates. Regulars call Analamazaotra and the nearby VOIMMA reserve real complementary options, several posters recommending both since VOIMMA's shorter trees make indri sightings genuinely easier. Posters call the cooler months from June-September a real period when reptile activity shifts, several regulars noting shoulder months can offer easier spotting for some species. Regulars call Mantadia genuinely less visited, several threads describing it as a real primary rainforest drawing noticeably fewer visitors than the main reserve. Posters recommend a local guide and an early start regardless of section, several regulars calling this standard for maximizing sightings. The record: 21.1C days, 12.4C nights, 33.9mm across over 8 days and 84 percent humidity.
Andasibe-Mantadia-forum reviews on a September visit describe indri sightings as a genuine highlight, posters calling the loud, unmistakable indri call a real feature here that visitors hear well before they see the animal. Regulars call black-and-white ruffed lemurs, red-bellied lemurs and bamboo lemurs all realistically sightable on the same visit, several posters listing multiple species spotted in a single morning walk. Posters recommend the Mitsinjo side of the Analamazaotra forest as a real alternative to the main park entrance, several regulars naming it for guided night walks. Regulars call September genuinely good timing, orchid blossoms starting through September into November and nocturnal lemurs still active. Posters recommend booking a local guide regardless of which entrance is used, several threads calling this standard for spotting species easy to miss alone. The record: 22.1C days, 13.1C nights, 23.9mm across 8 days and 81 percent humidity.
Andasibe-Mantadia-forum threads on a December visit describe this as genuinely the start of the wettest stretch, one poster asking whether the park turns to a real mud bath by late December. Regulars call lemur activity a genuine concern this time of year, several posters warning lemurs largely sleep through heavy rain rather than moving, the whole reason most visitors come. Posters call April, May, October and November the real ideal months, several regulars naming these over December for more reliable indri and lemur sightings. Regulars call forest trails genuinely muddy and slippery from December through March, several threads warning conditions here are considerably tougher than in the drier months. Posters recommend real waterproof boots and flexible plans for a December trip, several regulars calling this standard advice given how unpredictable this season runs. The record: 27.2C days, 17.5C nights, an extraordinarily high 215.3mm across 21 days and 83 percent humidity.
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