Climate Change Chart of Chefchaouen, Morocco

Overview of climate changes

Temperature changes

Averaged across calendar months, the difference in monthly mean temperature was +0.95 °C compared with the earlier reference period; this unweighted mean summarizes the monthly averages and does not imply that every month warmed by the same amount. The largest monthly increase was in October, with a difference of +2.20 °C. These are monthly mean temperatures, not daytime maximum temperatures.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.30 mm/day in the more recent period. This is an unweighted average of monthly means, not a day-weighted annual average or a monthly rainfall total, so it describes the aggregate rather than the change in every month. The largest monthly increase was in March, at a difference of +2.05 mm/day, while February had the largest monthly decrease, with a difference of -1.03 mm/day. These daily-mean differences show that the direction of change varied by month.

Changes in sunshine duration

Mean daily sunshine duration had an across-calendar-month average difference of -0.42 hours/day. This unweighted mean summarizes monthly daily-hour averages and does not mean that sunshine decreased by the same amount in each month. The largest monthly decrease occurred in March, with a difference of -0.99 hours/day; this is a monthly-specific contrast rather than a measure of change on every day.

Changes in snowfall

Averaged across calendar months, mean daily snowfall had a difference of -0.11 mm/day. This unweighted average of monthly daily means describes an aggregate, not a uniform shift in every month or a monthly total. The largest monthly increase was in January, with a difference of +0.19 mm/day, whereas the largest monthly decrease was in December, with a difference of -1.01 mm/day. The contrasting monthly differences show why the overall mean should not be read as the direction of change in each individual month.