北欧五国8月中旬平均气温是多少？

Sorry i'm in office so cannot type Chinese.

The temperature will be around 25. So take T shirts, short pants, summer shoes, skirts, and so on. But, also take some thin jackets, or water-prove. Thin jeans might also be needed.

Sun glasses, sun prove, that's important, for nobody use anti-sun umbrella here.