"The average year-round temperature measured from all the weather stations in the Philippines, excepting Baguio City, is 26.6 °C (79.9 °F). Cooler days are usually felt in the month of January with temperature averaging at 25.5 °C (77.9 °F) and the warmest days, in the month of May with a mean of 28.3 °C (82.9 °F).[1]
Elevation factors significantly in the variation of temperature in the Philippines. In Baguio City, with an elevation of 1,500 m (5,000 ft) above sea level, the mean average is 18.3 °C (64.9 °F) or cooler by about 4.3 °C (15 °F). In 1915, a one-year study was conducted by William H. Brown of the Philippine Journal of Science on top of Mount Banahaw at 2,100 m. (6,900 ft) elevation. The mean temperature measured was 18.6 °C (65.5 °F), a difference of 10 °C (21.6 °F) from the lowland mean temperature.[3]
In Manila and most of the lowland areas, temperatures rarely rise above 37 °C (98.6 °F). The highest temperature recorded in the country was 42.2 °C (108.0 °F) in Tuguegarao Cagayan Valley on April 29, 1912 and again on May 11, 1969. The absolute minimum temperature of 3 °C (37.4 °F) was recorded in January 1903 in Baguio."
http://en.wikipedia.org/wiki/Climate_of_the_Philippines
