What is the temperature in Beijing, Xian, Shanghai, Suzhou, Hangzhou, Guilin, Hongkong and Macau from May 7 to May 22?

iam treveling in a group throughout china. at may 7 we should be in pekim, at 10 in xi an, at 12 in xanghai, at 14 in suzhou, at 15 in hangzhou, at 17 in guilin, at 18 a cruise throug li king, at 19 on hong kong, and finally 21 macau. can you inform what kind of clothes we must during our stay in china - fom may 7 until may 22. can you inform the temperatures maximum and minimum during our stay. we thank you very much.