The fact that Taipei is a basin, and therefore does not enjoy sea breezes which can carry off heat, only makes the problem there even worse. The southern city of Kaohsiung is much better off in that regard. That is why Taipei has higher average summer temperatures even though it is at a higher latitude.
台北又是個盆地，不像位在南台灣的高雄，白天有海風吹往陸地，送走不少熱氣，這也是台北緯度雖然較高，夏天溫度卻高過南台灣的原因。