Please ask friends in the south to answer what the climate is like in Taiwan Province Province in September.
Generally speaking, I suggest you prepare short sleeves for your coat, because Taiwan Province Province is very hot and dry. If you are afraid of tanning, it is recommended to apply sunscreen instead of changing into a long-sleeved shirt.
Lower body, it is recommended to wear shorts, skirts, etc. After all, it is cooler and more breathable. However, if you are not satisfied with the leg curve and are afraid of tanning, you can also wear trousers.
In addition, it is also recommended that you prepare a thin coat to go to mountainous areas (Alishan, etc.). ) or air-conditioned indoor space (cars, indoor tourist attractions, etc. ), so as to avoid catching a cold due to the excessive temperature difference between indoor and outdoor.
Preparing a hat is also a good prescription for sun protection.