Question
While in Delhi and Jodhpur most of the rain is confined to nearly three months, in Thiruvananthapuram and Shillong, the rainy season is nine months long.
Solution
South Western monsoons rapidly advance towards Thiruvananthapuram and Shillong and reach by 1st of June. These areas get cyclonic rainfall too.
Monsoons withdraw from this region by December. So, rainy season is long. But Delhi and Jodhpur has short rainy season due to late arrival of Monsoons.
