season and weather of shenzhen in may,2013 and where to go, for a 3 days trip only

Hi, during that time, it will be hot and rainy. The average temperature will be around 27C. And the rainy days then will be a little frequent. So short-sleeved and klong-sleeved shirts are both needed and an umbrella will help you more.
As for the destinations, the window of the world (WOW), Splendid China, Happy Valley and Dameisha&Xiaomeisha Scenic Areas are suggested.