Climate Change Chart of Luanda, Angola

Overview of climate changes

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, had a difference of -0.71 hours/day compared with the earlier reference period. The aggregate is an unweighted mean of monthly means, rather than a day-weighted annual average. The largest monthly decrease was in September, with a difference of -1.67 hours/day, while May recorded the largest monthly increase, a difference of +0.26 hours/day. These monthly comparisons describe mean daily hours and should not be read as a continuous trend.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.60 mm/day compared with the earlier reference period. This is an unweighted average of monthly means for daily rainfall, not a day-weighted annual average or a monthly rainfall total. The largest monthly increase occurred in November, at a difference of +2.13 mm/day; the largest monthly decrease was in March, at a difference of -0.42 mm/day. These month-specific daily averages show that the overall mean difference does not describe every month's change.

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.17 °C compared with the earlier reference period; this is an unweighted mean of the monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in August, with a difference of +0.54 °C, while February had the largest monthly decrease, a difference of -0.29 °C. These monthly extremes describe individual monthly means, not a continuous change between the reference periods.