Antananarivo (Madagascar) weather in January
January in Antananarivo: hot, soaked, with clean air — a gamble, with 21 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#11 of 12 months in Antananarivo · #851 of 1413 destinations to visit in January · comfort 64/100 (tier C)
- Days
- 28°C
- Nights
- 17°C
- Wet days
- 21
- Sun
- 9.2 h
- Humidity
- 80%
- Daylight
- 13 h

Traveller notes on Antananarivo in January
Notes from nearby Andasibe-Mantadia National Park (73 km away)
Antananarivo doesn't have its own notes for January yet — these are about Andasibe-Mantadia National Park, close enough to share the season.
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.
Other months in Antananarivo
Regulars are consistent this counts among the cooler, drier months here, part of the dry season running from May through October, with this specific city named as one of the coldest spots in the country alongside Antsirabe and Fianarantsoa at this elevation. Our row backs that cool, genuinely dry read, 21.6C over 9.6C nights feeling 7C, with rain essentially absent, 5.5mm across under a day, and humidity at 76 percent. Regulars are specific a warm layer, a cardigan or fleece, is genuinely useful for this month despite Madagascar's tropical reputation, mornings and evenings running cool enough to need it. This remains a genuinely comfortable, low-humidity stretch for overland travel and outdoor activities. The record: 8.3 hours of sun, an 18.2 kph wind and one of the cleanest air readings in this project, AQI 30.
October closes the dry season here, and regulars are careful with the packing advice: bring something long-sleeved for the evenings, but do not overdo the warm clothes - nothing heavy is needed. Our row shows why both halves of that hold: 28.3C by day against 13.8C at night, a fourteen-degree fall that belongs to the altitude rather than the season. Rain is still light at 24.8mm across 4.6 days, though they warn it arrives in earnest towards the end of the month, so a late-October trip is racing it. The landscape is green by now and this is one of the better months for wildlife. The record: humidity 66 percent, 10.9 hours of sun, a 16.2 kph wind and AQI 41.
June is the month regulars pick for value rather than for perfection: popular but not peak, so prices stay low and the crowds thin. They are precise that the only genuinely cold part of Madagascar is the central plateau, and they name this city among the coldest places on it - upper 60s to low 70s by day and upper 40s to low 50s at night, which is our row to the degree at 22.4C over 10.5C. Rainfall is falling away but the technical dry season has not quite arrived, so expect sporadic showers between bright spells; ours is 13.1mm across 2.3 days. The record: humidity 77 percent, 8.6 hours of sun, a 17 kph wind and AQI 37.
May opens Madagascar's dry season, which runs to October, and regulars call May and June the shoulder: comfortable weather, lower prices, and no real need to book hotels ahead - a rare thing to be able to say about any month in this collection. The local caveat is about altitude. The only part of the country that genuinely gets cold is the central plateau, and Antananarivo sits on it; our row's 24.5C day falling to 12.9C at night is that, comfortable by day and properly cool after dark. The other trade-off is wildlife: May starts to cool and some creatures become less active. Rain has largely stopped at 6.4mm across 2.1 precipitation days, though regulars note the old patterns have become less reliable. The record: humidity 78 percent, 9 hours of sun, a 16 kph wind and AQI 39.
Add your own note from Antananarivo's card on the map.
Antananarivo climate normals — January
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Antananarivo in January
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.
Quietschool holidays in 5 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Antananarivo's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherAntananarivo's best weather comes in May, August and September — separate windows, not one continuous season.
January coincides with Cyclone season.
Best weatherFair weatherToughest weather
What's on in Antananarivo in January
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Cyclone season
15 Nov – 15 Apr · usuallyCyclones come ashore on the east coast, but the capital gets their tails: days of rain, the low quarters around Anosibe under water and the roads out of town cut. January to March is the likeliest stretch. Source ↗
- Season
Wet season
MonsoonRisk21 rainy days and about 258 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Where is Antananarivo?
Antananarivo in January — FAQ
- Is January a good time to visit Antananarivo?
- January in Antananarivo: hot, soaked, with clean air — a gamble, with 21 rainy days. It ranks #11 of 12 months for Antananarivo on SeasonMap's comfort score (64/100).
- What is the weather like in Antananarivo in January?
- In January, Antananarivo averages a daily high of 28°C and a low of 17.2°C, with about 258.4 mm of rain over roughly 20.9 rainy days.
- What is the air quality in Antananarivo in January?
- Antananarivo has a mean US Air Quality Index of about 23 in January.