The weather is characterized as humid, hot and very hot. Annual precipitation is about 3,000 mm, distributed from May to December. Precipitation presents deficit between July and August during the period known as “Veranillo de San Juan”, which lasts up to 70 days. Average annual temperature is between 24 and 27 C (75,2 to 80,6 F) with an annual potential evapotranspiration of over 1710 mm. The aridity index is over 20% and the hydric is between 40 and 60% (Herrera 1985 quoted in RMVS-Romelia—SINAC-MIAET, 2011).