The summer monsoon brings heavy ’ rains and creates a moisture-rich atmosphere, while the winter monsoon generated long periods of dry and arid conditions. The summer monsoon generally begins in April and lasts through late September, while the winter monsoon arrives in October and ends in March. Rainfall during the summer monsoon s can be very intense and may even cause flash floods. Winter monsoons are usually less powerful than summer monsoons and may bring high winds in addition to dry air.