Regions with Type I climate: Ilocos Region, western part of Mountain Province, western part of Nueva Ecija, Central Luzon, Metro Manila, Cavite, Laguna, Batangas, Tarlac, Pampanga, Bulacan, Bataan, Zambales, Occidental Mindoro, southern parts of Antique and Iloilo, northwestern part of Palawan, and the southern parts of Negros Oriental and Negros Occidental).
Type II. No dry season with a very pronounced maximum rain period from December to February. There is not a single dry month. Minimum monthly rainfall occurs during the period from March to May.
Regions with Type II climate: northern part of Kalinga Apayao, northwestern part of Cagayan, western part of Quezon Province, Polillo Island, Bicol Region, northeastern Samar, southern Leyte, Surigao del Norte, Surigao del Sur, Agusan del Sur, Agusan del Norte, and Misamis Occidental.
Type III. No very pronounced maximum rain period, with a short dry season lasting only from one to three months, either during the period from December to February or from March to May. This climate type resembles type I since it has a short dry season.
Regions with Type III climate: northeastern part of Ilocos Norte, Kalinga-Apayao, Cagayan, Mountain Province, western part of Isabela, eastern part of Nueva Viscaya, Bulacan, eastern parts of Laguna and Batangas, Oriental Mindoro, Romblon, Marinduque, Aklan, Capiz, northern parts of Antique and Iloilo, Negros Occidental, Siquijor, Zamboanga del Sur, Basilan, Lanao del Sur, Bukidnon, Misamis Oriental, western part of Agusan del Sur, Lanao del Sur, Bukidnon, Misamis Oriental, western part of Agusan del Sur, and eastern Maguindanao.
Type IV. Rainfall is more or less evenly distributed throughout the year. This climate type resembles the second type more closely since it has no dry season.
Regions with Type IV climate: northern Kalinga-Apayao,