Climate Change Chart of Brazzaville, Congo (Democratic Republic)

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of -0.11 °C compared with the earlier reference period; this is an unweighted average of monthly means, not a day-weighted annual average or a measure of daytime highs. The month-specific changes are not uniform: May had the largest monthly increase, a difference of +0.60 °C, while September had the largest monthly decrease, a difference of -1.15 °C.

Changes in rainfall

Mean daily rainfall averaged across calendar months shows a difference of +0.74 mm/day compared with the earlier reference period. This is an unweighted average of monthly means, not a monthly rainfall total or a day-weighted annual average, so it describes the aggregate rather than every month. The largest monthly increase occurred in November, with a difference of +1.60 mm/day; that specific monthly change need not represent rainfall changes in other months.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months shows a difference of -1.00 hours/day compared with the earlier reference period. This unweighted average of monthly means summarizes the aggregate and does not imply the same change in every month. The largest monthly decrease was in August, where the difference was -2.53 hours/day; this monthly extreme is distinct from the overall mean difference.