Climate Change Chart of New Delhi, India

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of -0.97 °C. This is an unweighted mean of the monthly means, not a day-weighted annual average, and it describes the overall comparison rather than every month; these temperatures are not daytime maxima. The largest monthly decrease was in May, with a difference of -3.66 °C. In contrast, August had the largest monthly increase, a difference of +1.08 °C. These opposing monthly differences show why the overall mean should not be read as a uniform change throughout the year.

Changes in rainfall

Mean daily rainfall, averaged across calendar months, had a difference of -0.10 mm/day. This unweighted mean summarizes the monthly means; it is not a day-weighted annual average or a monthly rainfall total, and does not describe every month individually. The largest monthly decrease in mean daily rainfall occurred in August, with a difference of -2.55 mm/day. The largest increase was in May, where the difference was +0.83 mm/day. The contrast between these months makes clear that the overall mean does not imply the same rainfall difference across the calendar.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, had a difference of -0.13 hours/day. This is an unweighted average of monthly means, rather than a day-weighted annual figure, and should not be taken to mean that every month changed by the same amount. The largest monthly decrease in mean daily sunshine was in May, with a difference of -0.98 hours/day. By contrast, August recorded the largest monthly increase, a difference of +1.14 hours/day; these are month-specific differences, not a description of daily variability.