Climate Change Chart of Dongguan, China

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.80 °C; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The monthly changes were not uniform: November had the largest increase, a difference of +1.71 °C, while April had the largest decrease, a difference of -0.02 °C. These extrema describe the largest monthly changes in each direction, not the pattern in every month.

Changes in rainfall

Mean daily rainfall, rather than monthly totals, averaged a difference of +1.58 mm/day across calendar months, using unweighted monthly means. The largest monthly increase was in August, with a difference of +4.44 mm/day. That monthly contrast shows how one month differed between the reference periods; it should not be read as a change applying to every month or as a continuous trend between the periods.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months shows a difference of -0.80 hours/day, an unweighted mean of the monthly comparisons rather than a day-weighted annual measure. The largest monthly decrease occurred in March, with a difference of -1.62 hours/day. This identifies the strongest monthly decrease in the supplied comparisons, not a decrease of that size in every month or a continuous change between the reference periods.

Changes in snowfall

The mean daily snowfall difference averaged across calendar months is 0.00 mm/day at the displayed precision. This unchanged rounded mean does not establish that snowfall was absent or that there was no difference beyond that precision. The largest monthly increase was in January, at a difference of +0.01 mm/day; these are daily amounts, not monthly snowfall totals.