Climate Change Chart of Xiamen, China

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.38 °C in the more recent period. This is an unweighted comparison of the monthly means, not a day-weighted annual average, and it describes an aggregate rather than a rise in every month. The largest monthly increase occurred in October, at +2.36 °C. Monthly means describe overall conditions for each month, not daytime maximum temperatures.

Changes in rainfall

Averaged across calendar months, mean daily rainfall differs by +0.34 mm/day in the more recent period. This unweighted mean of monthly means is not a day-weighted annual average, and does not imply that rainfall increased in every month. The monthly changes were not uniform: March had the largest increase, a difference of +1.62 mm/day, while July had the largest decrease, a difference of -1.34 mm/day. These are changes in mean daily rainfall, not monthly rainfall totals.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration has a difference of -0.39 hours/day in the more recent period. This is an unweighted comparison of monthly means, not a day-weighted annual figure, and the aggregate does not describe every month. The largest monthly decrease was in March, with a difference of -1.22 hours/day; by contrast, July recorded the largest increase, at +0.08 hours/day. These figures describe mean daily sunshine hours in those months.

Changes in snowfall

Averaged across calendar months, the difference in mean daily snowfall is 0.00 mm/day at the displayed precision. This rounded equality does not establish that snowfall was absent or that values were identical at finer precision; the measure is a mean daily amount, not a monthly total.