What kind of weather conditions will there be in October in Tainan?

Generally, it is warm even hot then, with the temp range of 22C to 30C for the whole moth. You will meet cloudy and sunny days; in the meantime, light rain may happen sometimes, but it has little negative effect on your trip. Well, if going in early Oct. it is still during typhoon season, so you should check ahead the weather forecast in case of the bad weather.