I will be traveling in Taiwan 18 June-22june, from north to south. How is the weather at this time?

According to the previous statistics, the temperature may range from 25C to 30C in the middle of June. The climate would be cool and moist. However, the possibility of typhoon would be high from June to September because this is the typhoon season in this area. Thus if possible, you are advised to change the travel plan. Generally speaking, October to May next year will be a nice time for sightseeing.