Köppen climate classification
The Köppen climate classification divides climates into five main climate groups, with each group being divided based on seasonal precipitation and temperature patterns. The five main groups are "A" (tropical), "B" (dry), "C" (temperate), "D" (continental), and "E" (polar). Each group and subgroup is represented by a letter. All climates are assigned a main group (the first letter). All climates except for those in the "E" group are assigned a seasonal precipitation subgroup (the second letter). For example, "Af" indicates a tropical rainforest climate. The system assigns a temperature subgroup for all groups other than those in the "A" group, indicated by the third letter for climates in "B", "C", and "D", and the second letter for climates in "E". For example, "Cfb" indicates an oceanic climate with warm summers as indicated by the ending "b". Climates are classified based on specific criteria unique to each climate type.
Dulag, Leyte
The prevailing climate type is similar in all eastern coastal towns of the province. The climate is type 2 in category wherein there is no definite dry or wet season throughout. Rainfall is more or less evenly distributed throughout the year. Maximum rainfall is from November to January. During weather disturbances (typhoon) some barangays are easily flooded. These barangays are found along Daang Maharlika, along the Daguitan River, and within the poblacion. Among these are Barangays Barbo, Alegre, Fatima, Salvacion; Districts of Combis, Market Site and Cambula, and the elementary school therewith, though there is no definite pattern of occurrence.