Climate Change Chart of Yaounde, Cameroon

Overview of climate changes

Temperature changes

The monthly mean temperature difference, averaged across calendar months, was +0.93 °C compared with the earlier reference period. This is an unweighted average of the monthly means, not a day-weighted annual figure, and it does not imply the same difference in every month or describe daytime maximum temperatures. The largest monthly increase was in November, with a difference of +1.14 °C. This identifies the strongest increase among the reported monthly changes, rather than a uniform shift across the year.

Changes in rainfall

Mean daily rainfall increased by +0.74 mm/day when averaged across calendar months. This unweighted mean of monthly differences is not an annual rainfall total, and it does not mean rainfall rose in every month. The largest monthly increase was in July, where mean daily rainfall had a difference of +2.72 mm/day. By contrast, April had the largest monthly decrease, with a difference of -0.47 mm/day. These are daily means, not monthly totals, and describe the most pronounced changes rather than daily variability.

Changes in sunshine duration

Mean daily sunshine duration had an average difference of -0.16 hours/day across calendar months, indicating a lower unweighted mean of monthly values in the more recent period. This aggregate does not establish a decrease in every month. The largest monthly decrease occurred in March, with a difference of -0.68 hours/day. The largest increase was in December, at +0.20 hours/day, showing that monthly sunshine differences varied in direction; these figures concern mean daily hours.