3. Similarly, 'Cherry Blossoms' are there in Karnatka, beneficial to coffee plantation and 'Mango showers' in elsewhere South India, which are beneficial to mango crops.
- This weather is followed by hot, wet weather from June to September. In May, the south west monsoon sets in. The normal dates of onset of the Monsoon are may 20 in the Andaman and Nicobar Islands, June 3 in the Konkan, June 15 in Kolkata and June 29 in Delhi.
- The South West monsoon enters the country in two Currents, one blowing over the Bay of Bengal and the other over the Arabian Sea. This monsoon causes rainfall over the most of the country (except Tamil Nadu and Thar Desert area). The S. W. monsoon entering from Western Ghats cause heavy rainfall over Kerla coast, but Tamil Nadu falls on the leeward side. In the That area, the winds blowing parallel to the Aravallis and the do not cause rain.
- The Bay of Bengal current cause heavy rainfall in the North East part of the country and a part of it turns west along the Himalayas over the Indo Gangetic plains rainfall in the region.
- But the Bay of Bengal Currents, by the time it reaches West Rajasthan, runs out the moisture.
- The Bay of Bengal branch after crossing the deltaic region, enters the Khasi valley in Meghalaya and gets entrapped in it due to funnel shape of the region.
- It strikes Cherrupunji in a perpendicular direction causing heavies rainfall in Maswsinram (Approx 1400 cm.)
- From mid September to mid December, the monsoon retress. As the sun's vertically Ray's start shifting towards the Tropics of Capricorn, the low pressure area start moving south winds finally start blowing from and to sea. This is called north east monsoon.
- The withdrawal of monsoon is a much more gradual process than it's onset.
- It causes rainfall in Tamil Nadu as the winds pick some moisture from Bay of Bengal. This explains the in Tamil Nadu as the winds pic some mositures from Bay of Bengal.
- This explains the phenomenon why Tamil Nadu remains dry when the entire country recivess rain and why it gets rain when practically the entire country is dry.
- The cold and dry weather starts in early December. In this, average temperature in South is 24° - 25°c, and while in the north is 10° - 15° c.
- In the latter part of December and the January's. The dry spell is broken by westrly depression (temperature cyclones) from Mediterranean Sea, which causes some rain in North West India.
- Almost all the precipitation in India is caicau by the monsoon and it is primarily obographic in nature.
- Cyclonic stroms provopr only a little rain, mainly in the North region.
