Climate Change Chart of Windhoek, Namibia

Overview of climate changes

Temperature changes

Monthly mean temperature was higher by an average difference of +1.36 °C across calendar months in the more recent period; this is an unweighted average of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in November, with a difference of +2.20 °C compared with the earlier reference period. This identifies the strongest monthly increase, not a continuous change through time.

Changes in rainfall

Mean daily rainfall had an average difference of -0.39 mm/day across calendar months, indicating a lower average in the more recent period; this unweighted mean of monthly means is not a day-weighted annual average, and the figures describe daily amounts rather than monthly totals. The largest monthly decrease was in January, with a difference of -1.65 mm/day. By contrast, September recorded the largest monthly increase, a difference of +0.05 mm/day; these month-specific changes show that the overall average does not describe every month's difference.

Changes in sunshine duration

Mean daily sunshine duration had an average difference of -0.12 hours/day across calendar months in the more recent period. This is an unweighted average of monthly means, rather than a day-weighted annual average. The largest monthly decrease occurred in February, with a difference of -0.49 hours/day. The largest monthly increase was in August, at a difference of +0.08 hours/day, so the average decrease should not be read as a decrease in every month's sunshine.