Climate Change Chart of Agadez (Sahara), Niger

Overview of climate changes

Temperature changes

Monthly mean temperature was higher by an average difference of +2.22 °C across calendar months in the more recent period. This is an unweighted average of the monthly mean differences, not a day-weighted annual average, and monthly means do not describe daytime maximum temperatures. The largest monthly increase was in March, with a difference of +3.21 °C; that identifies the strongest increase among the monthly changes, not a uniform change throughout the year.

Changes in rainfall

Mean daily rainfall decreased by an average difference of -0.23 mm/day across calendar months compared with the earlier reference period. This unweighted mean of monthly differences is not a day-weighted annual figure, and it describes daily amounts rather than monthly totals; it does not mean every month became drier. The largest monthly decrease occurred in August, at a difference of -1.16 mm/day. By contrast, the largest monthly increase was in October, with a difference of +0.02 mm/day, showing that the month-specific changes were not all in the same direction.

Changes in sunshine duration

Mean daily sunshine duration was lower by an average difference of -0.30 hours/day across calendar months in the more recent period. This is an unweighted average of monthly differences, rather than a day-weighted annual average, and does not imply an identical change in every month. The largest monthly decrease was in June, with a difference of -0.82 hours/day; this is a daily-hours comparison, not a measure of monthly sunshine totals.