Delhi Weather

Delhi’s weather is characterized by extreme variations, swinging dramatically between scorching summers and chilly winters. It falls under the humid subtropical climate classification, but due to its semi-arid location, it experiences distinct seasonal patterns.

Summer (March to June): The summer season is a long and intense affair, beginning in March and peaking in May and June. Temperatures regularly soar above 40°C (104°F), and often reach as high as 45°C (113°F) or even higher. The heat is often accompanied by dry, hot winds known as “loo,” which blow in from the west, increasing the feeling of discomfort. The air is often dusty and the humidity is relatively low during this period, leading to dehydration and heatstroke being common concerns. Early summer months like March and April might still offer pleasant evenings, but the relief is short-lived as temperatures climb steadily. Precautions like staying hydrated, wearing light-colored clothing, and avoiding prolonged exposure to the sun are essential during these months.

Monsoon (Late June to September): The arrival of the monsoon in late June or early July brings a much-needed respite from the intense heat. The southwest monsoon winds bring moisture-laden air from the Arabian Sea and the Bay of Bengal, resulting in significant rainfall. The city transforms, with greenery flourishing and the air becoming cleaner. However, the monsoon also brings its challenges. Heavy rainfall can lead to waterlogging, traffic congestion, and outbreaks of waterborne diseases. Humidity levels rise considerably, making the weather feel sticky and uncomfortable even with lower temperatures. While the monsoon typically starts to weaken by late September, occasional showers can linger into early October.

Post-Monsoon (October to November): The post-monsoon period is generally considered the most pleasant time of the year in Delhi. The weather is mild and sunny, with clear skies and a gentle breeze. Temperatures gradually decrease, making outdoor activities enjoyable. Diwali, the festival of lights, typically falls during this season, adding to the festive atmosphere. The air quality, however, can start to deteriorate during this period due to factors like crop burning in neighboring states and reduced wind speed, leading to smog.

Winter (December to February): Delhi winters can be quite cold, with temperatures occasionally dropping to near freezing point. Dense fog is common, especially in December and January, which can disrupt transportation and reduce visibility. Cold waves from the Himalayas bring chilly winds that further lower the temperature. While the days are generally sunny, the nights are cold and require heavy woolens. Rain is infrequent during this period, but occasional western disturbances can bring light showers. The air quality often worsens during the winter months due to a combination of factors, including vehicle emissions, industrial pollution, and stagnant air.

In recent years, Delhi’s weather patterns have become increasingly unpredictable due to climate change. There have been instances of prolonged heatwaves, delayed monsoons, and extreme rainfall events. This increasing variability poses challenges for urban planning, resource management, and public health.