According to the Köppen climate classification, there are two climates in Metro Manila. Most of the region has a tropical wet and dry climate (Köppen climate classification Aw) while the northeastern part of the region that lies on the foothills of Sierra Madre has a tropical monsoon climate. Together with the rest of the Philippines, Manila lies entirely within the tropics. Its proximity to the equator means that temperatures are hot year-round, rarely going below 15 °C or above 39 °C. Temperature extremes have ranged from 14.4 °C on January 11, 1914, to 38.5 °C on May 7, 1915.