Page 199 - 9 teachers social book 9 @ 2077 ctp_Neat

determinants of precipitation, temperature, humidity, air pressure, wind and other
meteorological variables in the given area or region. Weather is an integral part of
climate. The same latitude sometime create differences in climate because of the
altitude. For example, the summer temperature of Nepalgunj is about 30°C whereas
it is only 12°C in Namchhebazar. Though different types of climates are formed in
Nepal, there is great influence of monsoon in it. The three geographic regions of
Nepal have distinct climate, features according to their attitudinal positions. Broadly,
Nepal’s climate is divided into two categories.

1. Summer Season

Summer Mansoon

The summer season lasts for Chaitra to Bhadra, i.e. for six months. During the
first three months there is no rainfall and temperature rises up. In the Terai region
temperature rises up to 30°C to 35°C in summer, 20°C to 25°C in the Hilly region and
0°C to 10°C in the mountain region. During three months in summer, monsoon wind
blows from Bay of Bengal and enters Nepal from south-east of Nepal which is blocked
by the Himalayan range and the hills. Consequently, the eastern part of Nepal receive
maximum rainfall but when it moves towards the western part it decreases. About
90% rainfall occur during the summer. The average rainfall in summer in Nepal is
200 cm. The central region receives 150 cm whereas the western region receives only
100 cm during the summer season. The passes in between mountain ranges in the
north are almost dry with scanty rainfall because it is a very narrow pass and located

199 Dynamic Social Studies - Book IX