Climate Change Chart of Tangier, Morocco

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.51 °C in the more recent period; this is an unweighted comparison of month means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in October, with a difference of +1.31 °C compared with the earlier reference period. By contrast, March had the largest monthly decrease, a difference of -0.16 °C; these monthly results show that the overall mean does not describe every month’s change.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of 0.00 mm/day in the more recent period. This unchanged value at the displayed precision describes the aggregate of monthly means, not rainfall in every month, and the measure is a daily mean rather than a monthly total. The largest monthly increase was in March, with a difference of +0.89 mm/day; the largest monthly decrease was in February, with a difference of -0.89 mm/day. These opposing monthly shifts help explain why the across-month average can remain unchanged at the displayed precision.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, had a difference of -0.17 hours/day in the more recent period. This is an unweighted mean of monthly averages, so it does not imply the same change in each month. The largest monthly decrease occurred in March, with a difference of -0.50 hours/day. In contrast, January recorded the largest increase, a difference of +0.13 hours/day; these examples show how month-specific changes can differ from the overall mean.