When can I wear short sleeves in Xiamen?

It's not that early, unless you are not afraid of the cold, or the weather suddenly becomes very hot, you usually don't really wear short sleeves until the end of April and the beginning of May. Before that, the temperature may suddenly rise for a day or two. Just like last year, the temperature suddenly rose to 29 degrees on April 1 day, and then cooled down to 18 degrees on April 2, which took a long time. I wear short sleeves after my birthday every year.