: Rainfall & Weather
The average annual rainfall varies from a maximum
of 5,690 mm in the northeast of the country to 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 - a
total of 35,000 cusec- is second only to the Amazon.
The carry billions of tons of sediment load every
As it is situated in the tropic, the country is
prone to cyclones associated with tidal surges,
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 time 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 to 30 degree