The Great Monsoon Retreat
The end of the monsoon isn't like flipping a switch. It’s a gradual process that starts in the northwest around early September and moves southeast over several weeks. The India Meteorological Department (IMD) officially declares the withdrawal from different
regions based on specific criteria, including a reduction in moisture and several consecutive days of dry weather. By the first week of October, the monsoon has typically withdrawn from most of northwest and central India. This retreat means that while Delhi might be enjoying dry, sunny days, parts of the southern peninsula could still be experiencing monsoon conditions.
Clear Skies and Festive Air in the North
For North India, including cities like Delhi and Jaipur, October brings some of the most pleasant weather of the year. The heavy rains are over, humidity drops significantly, and the landscape is lush and green from the preceding monsoon. Daytime temperatures become comfortably warm, often hovering around 30-34°C, with minimal rainfall. This period, often called a 'shoulder season', is ideal for sightseeing and travel before the peak tourist crowds of winter arrive. The clear skies and cooler nights also coincide with the start of the festival season, lending a celebratory feel to the air.
A Second Monsoon for the South
In stark contrast to the north, southern India, particularly the southeastern coast, braces for more rain. October marks the beginning of the Northeast Monsoon, which brings significant rainfall to states like Tamil Nadu. For cities like Chennai, this season accounts for nearly half of their annual rainfall and is crucial for replenishing water reservoirs. While states like Kerala and Goa see a reduction in the heavy downpours of the southwest monsoon, they can still experience occasional showers. The northeast monsoon is known for being more erratic, with rainfall depending heavily on the formation of low-pressure systems in the Bay of Bengal.
Drying Out in the West and Center
Cities in western and central India, such as Mumbai and Pune, transition to a drier and hotter post-monsoon climate. After the intense rainfall of the preceding months, October sees a sharp drop in precipitation and humidity. In Mumbai, temperatures can climb, with average highs around 34°C. The weather becomes consistently sunny and clear, making it a good time for outdoor activities without the disruption of rain. This return to dry weather marks a clear end to the monsoon season for the region.
Pleasant Days and Cyclone Watch in the East
In Eastern India, cities like Kolkata also experience a pleasant shift. The southwest monsoon's retreat leaves behind warm, dry days and lush green landscapes. However, the post-monsoon season, from October to December, is also the primary season for cyclonic storms to form in the Bay of Bengal. While the weather is generally agreeable for daily life and even harvest activities in places like Darjeeling, coastal regions remain on alert for the potential development of cyclones, which can bring intense rain and strong winds.
