Toamasina's climate is characterized by a relatively constant temperature throughout the year, with average highs ranging from 21°C in June and July to 33-34°C in January, February, March, and December. The temperature drops slightly during the months of May to August, but remains above 16°C even at its lowest point. There is no distinct winter season, and the temperature variation between months is minimal. The warmest period of the year is from November to March, with temperatures often reaching above 30°C. The cooler months are May to August, with temperatures ranging from 16-27°C.