Taiwan is sub-tropical but the climate varies from hot and humid
in the south tempering to cooler in the north and inland
mountainous region. All over the country sudden rain showers
frequently occur, making rainwear an essential part of a visitor's
luggage. The driest time of year is autumn (September and October),
which is followed by a short generally damp and chilly winter with
snow on the island's mountain peaks. Summer temperatures can reach
90ºF (35ºC) at the coast. Summer is also typhoon season.