The India Meteorological Department (IMD) has warned of a colder-than-usual winter in parts of northern and central India, with more frequent cold wave days than normal.
Regions such as Haryana, Rajasthan, Delhi, and Gujarat are expected to feel the chill the most, as the polar vortex drives temperatures down. Some areas may see four or more cold wave days between December and February, exceeding the usual five to six days typically observed in northwest India. A cold wave is declared when the minimum temperature drops below 15°C for three consecutive days.
Most of central India, northwest India, and parts of peninsular India are forecasted to experience normal to below-normal minimum temperatures, though some pockets may see above-normal temperatures.
Rainfall Outlook:
- December: Normal rainfall nationwide
- Peninsular, west-central, east-central, and northeast India: Likely above-average rainfall
- Other regions: Below-normal rainfall
The IMD noted that the polar vortex, combined with La Niña, is intensifying the cold. La Niña, a cooling of Pacific Ocean waters, is often linked to harsher winters in India. November recorded a 42.8% rainfall deficit nationwide, with northwest India facing a 78.1% shortage, while northeast and east India received above-average rainfall. La Niña is expected to continue this winter, gradually transitioning to neutral conditions by early 2026.
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