Climate averages 1991–2020

Antananarivo weather
in January.

A warm, very wet month: the 4th warmest and the wettest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 24.6°C Daytime mean, January

Average low 16.8°C Night-time mean, January

Rainfall 287 mm 22 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

January is a warm month in Antananarivo: daytime highs average 24.6°C and nights cool to about 16.8°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 287 mm of rain on roughly 22 days, which makes January a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 08 min on an average January day.

The nearest other city in this atlas is Imerintsiatosika (24 km away). In January its highs average 24.5°C, about as warm as Antananarivo, with 305 mm of rain.

Among the 12 cities listed in Madagascar, Antananarivo ranks joint 8th of 12 for the warmest January highs and joint 5th of 12 for the driest January (rainfall, lowest first). The mean January high of those 12 cities is 27.1°C; Antananarivo is 2.5°C cooler than that mean.

From January to February, average highs fall by 0.3°C to 24.4°C, and monthly rainfall falls from 287 mm to 252 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Antananarivo climate table

1991–2020

Monthly climate averages for Antananarivo, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	24.6°C16.8°C	16.8°C	287	22.1	13.113 h
February	24.4°C16.8°C	16.8°C	252	20.1	12.713 h
March	24.3°C16.5°C	16.5°C	143	15.4	12.212 h
April	23.5°C15.2°C	15.2°C	32	7.0	11.712 h
May	21.9°C13.3°C	13.3°C	12	2.4	11.211 h
June	19.6°C11.1°C	11.1°C	4.2	0.7	11.011 h
July	18.7°C10.0°C	10.0°C	4.6	1.0	11.111 h
August	20.2°C10.2°C	10.2°C	3.3	0.7	11.511 h
September	22.9°C11.3°C	11.3°C	5.1	1.1	12.012 h
October	25.3°C13.5°C	13.5°C	27	4.8	12.513 h
November	26.2°C15.2°C	15.2°C	79	10.3	13.013 h
December	25.7°C16.4°C	16.4°C	181	17.5	13.213 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Antananarivo

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Antananarivo) is explained once on the Antananarivo year overview and on the Sources, method and limits page.