This map shows the number of months suitable for malaria transmission, based on climatological averages. Suitability is defined as the coincidence of precipitation accumulation greater than 80 mm, mean temperature between 18°C and 32°C, and relative humidity greater than 60%. Temperature, precipitation and relative humidity are factors of mosquito development time as well as an indicator of Plasmodium parasite development within the mosquito vectors (Grover-Kopec et al., 2006).