Explanation: Chennai, located in the southern part of India, experiences a tropical wet and dry climate, also known as a tropical savanna climate. This climate type is characterized by distinct wet and dry seasons, with temperatures remaining relatively high throughout the year. The cold weather season in Chennai typically spans from December to February, which is the coolest period of the year.
During this season, the average temperature in Chennai is around 24-25 degrees Celsius. This temperature range is considered mild and comfortable, as it is significantly cooler than the hot summer months but still warmer than what is experienced in temperate regions during their winter seasons. The city's proximity to the Bay of Bengal and its location in the tropical zone contribute to its relatively warm temperatures even during the coldest months.
It is important to understand that the term "cold weather season" in Chennai does not imply cold temperatures in the traditional sense. Instead, it refers to the period when temperatures are at their lowest compared to the rest of the year. The average temperature of 24-25 degrees Celsius is a reflection of Chennai's tropical climate, where even the coldest months are warm by global standards.
The other options provided in the question are incorrect for the following reasons:
- Option A (15-20 degrees Celsius) is too low for Chennai's climate, as the city does not experience such cold temperatures.
- Option C (30-33 degrees Celsius) is more typical of the hot weather season, not the cold weather season.
- Option D (10-15 degrees Celsius) is far too low and would be more characteristic of a temperate region's winter, not a tropical city like Chennai.
Understanding the climate patterns of Chennai is crucial for anyone studying the geography and meteorology of Tamil Nadu, as well as for those preparing for competitive examinations that cover regional geography and climate. The correct average temperature range of 24-25 degrees Celsius during the cold weather season reflects the unique tropical climate of Chennai and its position in the southern part of India.