Mucky Tidal Swamp from the miscellaneous soil types. Climate Malolos belongs to Type 1 category of the Philippine Climate Corona Classification, which has two pronounced seasons, i.e., wet and dry seasons. Wet during the months of June to November and dry from December to May. The northwest monsoon prevails over the area from October to January bringing in moderate and light rains, the last trade winds predominate from February to April but the high Sierra Madre Mountains interfere with the free circulation of making the area dry with almost no rains during the period, while from May to September the southwest monsoon prevail with strong winds and abundant rainfall, and generally associated with strong typhoon. Barangays Malolos is politically subdivided into 51 barangays that are spread over a land area of consisting of agricultural, commercial, industrial, residential, bodies of water, fishponds, marshes and roads. Many of the name of the barangays were derived from the name of common Philippine trees, because Malolos was once a vast virgin land and forests, before the Spaniards came and Christianized the natives. While others were named in honor of their patron saints. Demographics As of 2015, the Philippine Statistics Authority released the official result of 2015 census in which Malolos has a population of 261,189 people, with a density of , an increase of 17,129 people from the 2010 census. There are 52,547 households in the city. Majority of the Malolos households usually lives along the major roads. It has an average crime rate of 6.28% and has a crime solution efficiency of 97.11%. Language and ethnicity The majority of the Maloleños (or Malolenyo in Filipino) traces their roots to Tagalog ethnicity although there are also Kapampangan and other ethnicities who migrated to the city. The vernacular language is Filipino, in the form of Tagalog, while Philippine English is the language most widely used in education and business throughout the city. Although Malolos is the city where the Filipinos established the Spanish as their only official language in the first constitution, the native speakers of Spanish still alive are reduced to the very old members of a handful of families. Religion The Christianization of Malolos was done by the Augustinian Order in May 1572 thru the effort of Fray Diego Vivar-Ordonez (parochial vicar of Calumpit, assistant to Fray Diego Herrera and Martin de Rada) and it became one of the visitas of Parish of