The Northeast Monsoon is a seasonal weather pattern that occurs in parts of South Asia, particularly in India and Sri Lanka. It typically takes place from October to December, bringing heavy rainfall to the southeastern regions. This monsoon is driven by the shift in wind patterns, where cool, dry air from the Himalayas meets warm, moist air from the ocean. During the Northeast Monsoon, areas like Tamil Nadu and Andhra Pradesh experience significant precipitation, which is crucial for agriculture. The rains help replenish water sources and support the cultivation of crops such as rice and sugarcane, making this season vital for the local economy.