Hot Days And Warm Nights In Delhi, Now Rain-Thundershowers Likely For Three Days

Delhi had a hat-trick of heat wave days from 7th to 9th April 2025. The base observatory at Safdarjung recorded a day temperature in excess of 40°C, about 5°-6°C above the normal. The last two days, the minimum temperature has also risen to 25°C or more, again, about 5°-6°C above the average. The range of temperatures qualified for heat wave conditions during the day, followed by warm nights.

For a heat wave, the temperature has to reach at least 40°C, and the departure from normal has to be 4.5°C or more. Again, for warm nights, the day temperature needs to be in excess of 40°C and the minimum also has a departure of 4.5°-6.4°C from the normal. A departure of more than 6.4°C will amount to a ‘very warm night.’ Both the day and night temperatures are likely to drop and fall short of the respective criteria for the next three days.

There is a western disturbance over the mountains an induced cyclonic circulation over the plains of North India. An east-west trough is extending and passing through and through Delhi, and this pattern will sustain for the next three days. Clouds are likely to gather sometime in the evening and thereafter show up intermittently for the next three days. Light to moderate rain and thundershowers are likely between 10th and 12th April. Most of the weather activity will happen in the late evening and night hours.

The heat wave will abate from the city and suburbs. Today, the maximum temperature may fall just short of 40°C and further drop by about 3°C on Friday and Saturday. The minimum temperature may sink to about 20°C during this period. Broad clearance in the weather activity is expected on Sunday. The day temperatures will, once again, be on the rise next week and are likely to surpass the highest of 41°C recorded on 08th April 2025.