The Philippines has a tropical marine climate, with the northeast monsoon, which produces a cool, dry season from December to February, and the southwest monsoon, which brings rain and high temperatures from May to October. Between March and May, hot, dry weather prevails.
Temperatures in Manila range from 21°C to 32°C, with an average annual temperature of 27°C. Temperatures elsewhere in the Philippines have been recorded at more than 37°C. The average monthly humidity ranges from 71 percent in March to 85 percent in September. Annual rainfall is heavy but varies widely throughout the Philippines, ranging from 965 millimeters in some sheltered valleys and the southern tip of the island of Mindanao to 5,000 millimeters along the mountainous east coasts of the islands of Luzon, Samar, and the northern tip of Mindanao.
The Philippines lies astride the typhoon belt and experiences 15 to 20 typhoons a year from July through October, of which five or six may cause serious destruction and death.