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Antananarivo, Madagascar climate

Cwa Monsoon-influenced humid subtropical

Antananarivo has a mildly seasonal warm-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is December with an average daily high near 28°C, while the coldest is July averaging around 10°C at night. Precipitation totals about 1469 mm a year and is strongly seasonal — January alone averages 333 mm while August barely receives 6 mm.

☀️ Summers

Warm

Highs near 28°C in December.

❄️ Winters

Cool

Lows near 10°C in July.

🌧️ Rain

Wet

About 1469 mm of rain a year.

Wettest in January

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Hours of sunshine per day

Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)

Antananarivo climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	28	27	27	26	25	22	21	23	25	27	28	28
Avg temp (°C)	22	22	22	21	19	16	15	16	18	20	22	22
Avg low (°C)	17	17	17	15	13	10	10	10	11	13	15	17
Precipitation (mm)	333	274	216	68	31	6	9	6	16	60	158	291

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	28	27	27	26	25	22
Avg temp (°C)	22	22	22	21	19	16
Avg low (°C)	17	17	17	15	13	10
Precipitation (mm)	333	274	216	68	31	6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	21	23	25	27	28	28
Avg temp (°C)	15	16	18	20	22	22
Avg low (°C)	10	10	11	13	15	17
Precipitation (mm)	9	6	16	60	158	291

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	81	79	70	54	45	43	46	44	43	52	63	73
Relative humidity (%)	87	88	89	88	88	88	88	85	82	80	80	83
Wind speed (m/s)	2.5	2.5	2.4	2.2	2.1	2.6	2.9	2.8	2.7	2.4	2.2	2.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	81	79	70	54	45	43
Relative humidity (%)	87	88	89	88	88	88
Wind speed (m/s)	2.5	2.5	2.4	2.2	2.1	2.6

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	46	44	43	52	63	73
Relative humidity (%)	88	85	82	80	80	83
Wind speed (m/s)	2.9	2.8	2.7	2.4	2.2	2.2

Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Ivato, a weather station, about 14 km from the city centre. The underlying daily records come from NOAA's global station network.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →