Climate Change Chart of Ulsan, South Korea

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.78 °C compared with the earlier reference period; this unweighted comparison of month means is not a measure of daytime maximum temperatures or a continuous trend. The largest monthly increase was in February, with a difference of +1.69 °C, while December had the largest decrease, a difference of -0.31 °C. These monthly extremes show that the change varied by month rather than being uniform.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference of -0.53 hours/day compared with the earlier period. This is an unweighted summary of monthly means, not a statement that sunshine declined in every month. The largest monthly decrease was in August, with a difference of -1.28 hours/day. By contrast, July recorded the largest monthly increase, a difference of +0.42 hours/day, showing that the monthly changes were not all in the same direction.

Changes in rainfall

Mean daily rainfall, rather than monthly rainfall totals, was higher on average across calendar months, with a difference of +1.04 mm/day. This unweighted mean of monthly averages summarizes the overall comparison but does not imply the same difference in every month. The largest monthly increase occurred in August, where mean daily rainfall had a difference of +2.84 mm/day. This marks the strongest monthly rise in the supplied comparison, not a description of rainfall on every day.

Changes in snowfall

Mean daily snowfall averaged across calendar months had a difference of +0.05 mm/day. This unweighted comparison of monthly means describes an overall difference, not a uniform change across months; snowfall values refer to daily averages rather than monthly totals. The largest monthly increase was in March, with a difference of +0.78 mm/day. In February, the largest decrease was a difference of -0.35 mm/day, indicating contrasting monthly changes in recorded snowfall.