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Weather extremes

How extreme does Antananarivo's weather get?

The hottest, coldest, wettest and snowiest days Antananarivo has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 34 years of daily weather observations (1991–present), from the Ivato station 14 km away. Updated through August 2025 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Antananarivo has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
100°F Jan 22, 2021

That is about 19°F hotter than a normal January afternoon in Antananarivo (typical high near 82°F).

The three most extreme on record

1 100°F Jan 22, 2021recent
2 96°F Jan 2, 1994
3 96°F Dec 20, 2024
❄️ Coldest night
31°F Jul 10, 2016

About 18°F colder than a normal July night in Antananarivo (typical low near 49°F).

The three most extreme on record

1 31°F Jul 10, 2016
2 33°F Jul 30, 2002
3 36°F Jun 6, 2013
🌧️ Most rain in one day
15.04 in Apr 10, 1992

More rain in a single day than Antananarivo usually gets in the whole month of April (typical April total about 2.7 in).

The three most extreme on record

1 15.04 in Apr 10, 1992
2 9.45 in May 17, 1994
3 7.56 in Feb 4, 1992

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

10°30°50°70°90°110°130° all-time high 100°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Antananarivo's record heat sits well above even a hot day for the season — January's 100°F is about 19°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Antananarivo's warmest days reach the low 80s°F and its coldest nights drop to the high 40s°F. But across the record it has gone as high as 100°F and as low as 31°F. A single day has delivered over 15 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
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.

How we build these numbers →