Rainfall and Weather
Friday, 28 March 2008

The average annual rainfall varies from a maximum of 5,690 mm in the northeast of the country to a minimum of 1,110 mm in the west. The groundwater, however, provides adequate storage to compensate for annual variations in rainfall and stream-flow. The average annual discharge from the three major rivers - 35,000 cumec - is second only to the Amazon. The rivers earn' billions of tons of sediment-load every year.

As it is situated in the tropics, the country is prone to cyclones associated with tidal surge, especially in the pre-monsoon and post-monsoon months. Because of high density of population in the flat deltaic coastal region, the loss of human lives in such cyclones has at times been very heavy.

The country experiences a hot summer of high humidity from late March to late June, a somewhat cooler but still a hot and humid monsoon from late June through October and a cool dry winter from November to the end of February.

Day temperature ranges from 7 to 12 degree Centigrade in the cool months and in the other months it varies between 23 and 35 degree Centigrade.