Rainfall: annual rainfall averages 1,623.6-1,899.8mm, more in the north than in the south. Every year since January the rainfall increases gradually, April surge, May-June rainfall is the most, the rainfall is mainly in, October to March is the season of less rain, April-June the first flood season is mostly frontal rain, July-September the latter flood season is mostly tropical cyclone rain, followed by convective rain (hot thunderstorms).

Yearly average total rainfall days in Guangzhou districts

149 days in the old eight districts

151 days in Panyu District

157 days in Huadu District

153 days in Zengcheng City

157 days in Conghua City