Climate Change Chart of Bamako, Mali

Overview of climate changes

Temperature changes

Averaged across calendar months, the difference in monthly mean temperature was +1.36 °C compared with the earlier reference period; this is an unweighted mean of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in March, with a difference of +1.88 °C. This identifies the strongest monthly increase in the supplied comparison, not a continuous change over time.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of -0.54 mm/day compared with the earlier reference period. This unweighted mean describes the aggregate of monthly means, not monthly totals or a change shared by every month. The largest monthly decrease was in August, where mean daily rainfall had a difference of -2.33 mm/day. By contrast, the largest monthly increase was in May, at +0.05 mm/day; these are changes in daily means rather than monthly accumulated rainfall.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.21 hours/day compared with the earlier reference period. This is an unweighted average of monthly means, so it does not imply the same difference in every month. The largest monthly decrease was in May, with a difference of -0.65 hours/day. The largest monthly increase was in July, where the difference was +0.08 hours/day; both figures describe average daily sunshine duration.