The Pakistan Meteorological Department and National Disaster Management Authority have issued heatwave advisories for Karachi as temperatures are forecast to soar.

These warnings are critical for the largest city in Sindh province, where extreme heat threatens public health and infrastructure during the peak of the summer season.

Officials said a severe heatwave is expected to grip the region, with temperatures projected to cross 42°C [2]. Some forecasts indicate the mercury may reach as high as 50°C [1]. The intense heat is attributed to seasonal high-pressure conditions driving the weather pattern across the region [3].

Discrepancies exist among official forecasts regarding the exact timing of the peak heat. One alert identified a window from May 19 to May 26 [2]. Another report suggested the heatwave would be most severe from May 25 to May 31 [1].

Most recently, the Pakistan Meteorological Department said the heatwave is expected to persist from June 7 to June 12 [3]. This period coincides with the current week, placing the city under immediate weather stress.

Authorities have urged residents to take precautions to avoid heat-related illnesses. The NDMA has issued a nationwide alert to prepare for these conditions as temperatures rise across various parts of Pakistan [2].

Temperatures are projected to cross 42°C.

The variation in temperature forecasts—ranging from 42°C to 50°C—and the shifting date windows suggest a volatile weather pattern. For a densely populated urban center like Karachi, such extreme heat increases the risk of power grid failure due to air conditioning demand and elevates the possibility of heatstroke casualties.