The appeal of Cebu Island is, without a doubt, its warm climate, which is divided into a dry and rainy season throughout the year. January to June is the dry season, and July to December is the rainy season. The average annual temperature is 26-27℃. While there is a dry season (January-May) and a rainy season (June-December), there are regional differences, and Cebu Island does not have a clearly defined rainy season throughout the year. Even during the rainy season, it doesn't rain all day; often, it rains heavily like a squall for a short time and then quickly clears up. Summer clothing from Japan is fine, but it's a good idea to have a long-sleeved shirt to protect against air conditioning.
Please also refer to Yoshiko Mama's Cebu Diary.