im planning to go to Taipei end of september. 22nd till 29th. is it ok with the weather?

Oh, according to the previous weather records, the temperature during that period of time was generally 75 F to 85 F. It may have some light rains. But it won't influence the sightseeing a lot. Don't worry. So it's ok for you to visit this area at time. About the clothes, you can bring T-shirts, jeans and light jackets.