Zhuhai is located in low-latitude subtropical monsoon zone in the south of the Tropic of Cancer, and belongs to subtropical marine climate, with abundant sunshine. The temperature in Zhuhai is high all the year round, and the daily temperature difference is small, and the annual average temperature is at 22.4 ℃ or so, and the historical high temperature is 38.5 ℃, and the minimum temperature is 2.5 ℃ . The period of concentrated rainfall starts from May and ends in September. The pre-flood season generally starts from the last ten-day of April, and the post-flood season is generally from July to September. The disaster whether with greater impact on Zhuhai city includes typhoon, heavy rain, cold air, strong winds and cold dew wind and so on.