The climate in the Philippines is typically tropical -- hot and humid year round but the months of March, April and May are the hottest months. According to my wife, "it'll bake your head," meaning it's best that all Anglo-boys wear a hat or else the extreme heat of the sun will burn their head and bake their brain inside the skull!
All tourists -- especially Anglos -- are advised: "NEVER, EVER underestimate the power of the Philippine sun, even on cloudy days!" I know from experience, only a couple hours on the beach during the morning and by evening, after you get home, you'll be as red as a cooked lobster!
Although the nation's weather pattern is fairly complex, it can be roughly divided into the "dry season," January through June and the "wet season," July through December. In the Cebu area, January is usually the coolest month while May is the hottest. Regarding those months of July through December, Although referred to as the "wet" season, don't think as I did, that it rains constantly during that period -- normally it rains a lot but not every day and not constantly. Sort of like spring-time in the USA -- showers two or three times a week or perhaps every afternoon for extended periods.
Temperatures here average between 35C to 40C [around a humid 85-90F] during the day and at night it seldom drops below 27C [about 80F].