Explanation: Kolkata, the capital city of West Bengal, experiences a tropical wet climate, which is classified as moderate. This climate type is characterized by high temperatures and significant rainfall, especially during the monsoon season. The city's climate is influenced by its geographical location, which is close to the Bay of Bengal and the monsoon winds.
The tropical wet climate, also known as the tropical monsoon climate, is defined by the Köppen climate classification system as Am. This classification indicates that the city experiences high temperatures and a significant amount of rainfall throughout the year, with a distinct wet season. The wet season in Kolkata typically occurs from June to September, during which the city receives the majority of its annual rainfall due to the southwest monsoon.
Kolkata's average annual temperature ranges from 15°C to 35°C, with the warmest months being April and May, and the coolest months being December and January. The city's humidity levels are consistently high, averaging around 70-80% throughout the year. This high humidity, combined with the warm temperatures, contributes to the city's moderate climate classification.
The monsoon season plays a crucial role in shaping Kolkata's climate. The southwest monsoon brings heavy rainfall and cooler temperatures, providing relief from the high temperatures of the pre-monsoon season. The monsoon also brings a significant amount of moisture, which contributes to the high humidity levels in the city.
In summary, Kolkata's climate is classified as moderate due to its consistently warm temperatures and high humidity levels throughout the year. The city's tropical wet climate, influenced by the monsoon and its coastal location, results in a distinct climate that is neither cold nor extremely hot, but rather moderate in nature. Understanding the climate of Kolkata is essential for comprehending the broader climatic patterns of West Bengal and the impact of the monsoon on the region.