Tʻai-pei

— Although all of the island receives 40 inches of rainfall a year, except for a very narrow strip along the west coast, precipitation is seasonally and locally variable. Most of it falls between May and September, except in the northeast where 60-100 inches is fairly well distributed throughout the year. Here the prevailing winds are northerly and northeasterly and bring rain to T'ai-pei and I-lan hsien.