weather in guilin from 11/2/2013 to 15/2/2013

hello, I am going to that city on 11/2/2013 to 15/2/2013 , is it very cold there at this dates, we will be going for the cruise in LI river and also to silver cave and others , can you tell me whether i need down jacket cos looking at the weather forecast , it will be raining over there and the temperature is at 6 to 9 deg C.. we have old folks with us so need to know exactly what to bring and wear , thank you very much