The India Meteorological Department (IMD) forecasts relief from the current heatwave in North and Northwest India over the next three days [1].

This shift provides a critical reprieve for millions of residents in Delhi, the National Capital Region, Uttar Pradesh, and Rajasthan who have faced intense heat throughout May [2].

According to the IMD, the change is driven by a fresh western disturbance and incoming easterly winds. These systems are expected to trigger thunderstorms, gusty winds, and a sharp fall in temperatures [3].

Maximum temperatures across northwest India are projected to decline [4]. While some estimates suggest a drop of five to 10 degrees Celsius [1], other forecasts indicate a decline of six to eight degrees Celsius [5].

"The shift comes as thunderstorm activity intensifies across north, east and central India under the influence of western disturbances and multiple cyclonic circulations," the IMD said [6].

The weather agency warned that the relief will be accompanied by volatile conditions. The IMD said light to very light rain is expected during the afternoon and evening, accompanied by strong winds and squalls reaching speeds of 50-60 km/h [7].

These conditions are expected to persist between May 28 and May 30 [8]. The IMD said the localized rain and wind will help break the prolonged heat that has gripped the region [2].

"Maximum temperatures across northwest India could decline by 6-8 degrees Celsius by Saturday, offering significant relief from the intense heat that gripped the region for most of May," the IMD said [5].

“Maximum temperatures across northwest India could decline by 6-8 degrees Celsius by Saturday”

The arrival of western disturbances in late May typically signals a transition in weather patterns for the Indian subcontinent. While the immediate drop in temperature alleviates the public health risks associated with extreme heat, the accompanying high-velocity winds and thunderstorms can create secondary hazards, such as structural damage or transport disruptions, before the official monsoon season begins.