Climate Change Chart of Lahore, Pakistan

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of -1.70 °C compared with the earlier reference period; this is an unweighted mean of monthly averages, not a day-weighted annual figure or a measure of daytime maximum temperatures. The largest monthly decrease was in June, with a difference of -4.12 °C, while August had the largest monthly increase, at +0.21 °C. These extrema show that the overall mean difference did not apply uniformly across calendar months.

Changes in sunshine duration

Mean daily sunshine duration had an unweighted, across-calendar-month difference of -0.47 hours/day compared with the earlier reference period. This summarizes the monthly means rather than indicating the change in every individual month. The largest monthly decrease was recorded in June, with a difference of -1.19 hours/day. By contrast, August had the largest monthly increase, at +0.22 hours/day, illustrating the variation among month-specific differences.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.36 mm/day in the more recent period. This is an unweighted average of monthly means and describes daily amounts, not monthly rainfall totals. The largest monthly increase occurred in June, with a difference of +1.36 mm/day; the largest monthly decrease was in August, at -1.02 mm/day. These month-specific differences show why the average change should not be read as a change in every month's daily rainfall.