Climate Change Chart of Addis Ababa, Ethiopia

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.76 °C compared with the earlier reference period. This is an unweighted mean of the calendar-month means, not a day-weighted annual average, and the figures describe monthly mean temperatures rather than daytime highs. The largest monthly increase was in March, with a difference of +2.23 °C. That identifies the strongest increase among the reported monthly differences; it does not imply that every month increased by the same amount.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of -1.19 mm/day. This is an unweighted mean across monthly means, not a day-weighted annual average, and the measure is a daily mean rather than a monthly rainfall total. The largest monthly decrease was in September, where mean daily rainfall had a difference of -3.08 mm/day. By contrast, July recorded the largest monthly increase, a difference of +0.40 mm/day; these two monthly extremes show that the overall mean difference does not describe every month.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, had a difference of +0.17 hours/day. This unweighted mean summarizes the monthly means rather than a day-weighted annual average, and it refers to daily sunshine hours. The largest monthly increase occurred in July, with a difference of +0.92 hours/day. The largest monthly decrease was in April, with a difference of -0.41 hours/day, so the mean difference should not be read as a change that applied uniformly throughout the calendar.