Climate Change Chart of Guangzhou, China

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.72 °C compared with the earlier reference period; this is an unweighted mean of monthly averages, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in November, with a difference of +1.46 °C. By contrast, April had the largest monthly decrease, a difference of -0.13 °C; these extrema show that month-specific differences were not uniform.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +1.30 mm/day in the more recent period. This is an unweighted average of monthly means, rather than an annual, day-weighted figure, and the metric describes daily amounts rather than monthly rainfall totals. The largest monthly increase occurred in August, with a difference of +3.70 mm/day. In November, the largest monthly decrease was a difference of -0.08 mm/day, so the across-month average does not mean rainfall increased in every month.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.56 hours/day compared with the earlier reference period. This unweighted mean summarizes monthly averages and does not indicate the difference in every individual month. Monthly differences varied: June recorded the largest increase, a difference of +0.40 hours/day, while November recorded the largest decrease, a difference of -1.20 hours/day. These are changes in mean daily sunshine hours, not totals for the month.