Antananarivo was founded around 1610 (some accounts say 1625), when the Merina king Andrianjaka took the Analamanga hill from the Vazimba and made it his capital. The city sits at about 1,280 m on a ridge rising roughly 200 m above the Betsimitatatra rice fields, which still produce rice beside the streets. The Rova royal compound on the summit burned on the night of 6 November 1995; the stone casing of Manjakamiadana palace survived and was re-roofed by 2009. Andrianampoinimerina founded the Analakely market and set Friday as market day, and Lake Anosy, made in the 19th century to power factories, is ringed by jacarandas that bloom in October.
Nights sit around 14°C and afternoons around 28°C, though some days reach 31°C.
Antananarivo barely changes season: afternoons sit around 26°C and nights around 14°C most of the year.
Some January days reach 31°C, and some July nights drop to 7°C.
There is a clear wet season from November – March, peaking in January with around 312 mm. The dry months run from May – September.
Wind is rarely an issue; most months sit between calm and a light breeze. Air quality is worth watching: November averages an AQI of 55, while August clears to 24.
Days stretch to about 13.1 hours of light in December and shrink to 10.9 in June — something to weigh if you work to a fixed timezone.
For what you're after, the best months in Antananarivo are October – November. Expect fast internet (50 Mbps) and a low cost of living (about €750 a month).
Affiliate links: if you book through them I earn a small commission, at no extra cost to you.