New Delhi Weather in September

Delhi experiences some of the world's most extreme urban weather swings. Summers peak at 113°F+ with hot, dry dust storms (andhi) rolling in from the Rajasthan desert. The monsoon (July–September) brings sudden flooding to low-lying colonies and temporary relief from heat. Winter brings dense fog that can reduce visibility to near zero for weeks, disrupting flights and traffic. Pollution dramatically amplifies perceived cold in winter, with AQI frequently exceeding 400 during fog inversion events.

Excellent shoulder season — warm with fewer tourists in many destinations.

Delhi has extreme seasonal swings. Winters can frost; summers regularly hit 113°F (45°C). The monsoon (July–September) provides relief but also flooding. The city has severe air quality problems, particularly October–February when pollution peaks.

• ✓N95 mask for winter air pollution
• ✓Sunscreen and hat in summer
• ✓Layers for cold winter mornings
• ✓Rain gear for July–September monsoon