Taiwan has a subtropical monsoon climate, with wet, humid summers and short, relatively mild winters (though it often snows on the highest peaks) affecting the best time to visit.The north tends to be several degrees colder, and a lot wetter, than the tropical south. The northeast monsoon lasts about six months from October to late March and brings wet weather to Keelung and the northeast side …

: https://www.roughguides.com/destinations/asia/taiwan/when-to-go/