Mantasoa, in Analamanga, Madagascar, is home to roughly 10,000 people in the Indian/Antananarivo time zone at 19°S latitude.
In 2025, Mantasoa averaged an annual temperature of 61°F, with hottest temperatures reaching 82°F in December and lowest around 40°F in August. The city received approximately 81 inches of precipitation during the year.
View historical weather for Mantasoa · More cities in Analamanga