Climate Change Chart of Daejeon, South Korea

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature was higher by a difference of +1.26 °C in the more recent reference period; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime highs. The largest monthly increase was in March, with a difference of +2.40 °C, showing that the shift in monthly means was not uniform across the calendar.

Changes in rainfall

Mean daily rainfall, rather than monthly rainfall totals, averaged across calendar months was higher by a difference of +0.43 mm/day in the more recent period; this unweighted mean describes the aggregate of monthly averages, not every month. The largest monthly increase was in August, with a difference of +2.91 mm/day, while the largest decrease was in June, with a difference of -1.08 mm/day. These contrasting monthly changes show why the overall mean should not be read as a uniform shift throughout the year.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months was lower by a difference of -0.48 hours/day in the more recent reference period; this is an unweighted mean of monthly averages, not a day-weighted annual figure. The largest monthly decrease occurred in August, with a difference of -1.32 hours/day. By contrast, June recorded the largest monthly increase, with a difference of +0.19 hours/day, so the aggregate decrease does not describe every month's change.

Changes in snowfall

For mean daily snowfall, rather than monthly totals, the unweighted average across calendar months was lower by a difference of -0.07 mm/day in the more recent period. The monthly pattern was not uniform: the largest decrease was in January, with a difference of -0.69 mm/day, while the largest increase was in March, with a difference of +0.37 mm/day. These figures describe changes in period averages and do not indicate that snowfall was absent in either period.