Climate Change Chart of Aleppo, Syrian Arab Republic

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.33 °C. This is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in March, with a difference of +2.32 °C; by contrast, November recorded the largest decrease, at -0.02 °C. These selected months mark the strongest changes in opposite directions, while the overall mean summarizes the calendar-month averages.

Changes in rainfall

Mean daily rainfall, rather than monthly rainfall totals, had an averaged-across-calendar-months difference of -0.09 mm/day. The monthly pattern was not uniform: January had the largest decrease, a difference of -0.61 mm/day, while December had the largest increase, at +0.31 mm/day. These are comparisons of daily mean amounts for the named months; they do not describe every day or establish how rainfall changed continuously between the reference periods.

Changes in sunshine duration

The unweighted mean difference across calendar months in daily sunshine duration was -0.07 hours/day. Individual monthly differences point in opposite directions: daily sunshine increased most in January, with a difference of +0.34 hours/day, and decreased most in December, with a difference of -0.53 hours/day. These figures describe mean daily hours, not total sunshine over each month, and the calendar-month average should not be read as a day-weighted yearly figure.

Changes in snowfall

Mean daily snowfall averaged across calendar months had a difference of +0.03 mm/day. At the displayed precision, this small overall difference should be understood as an aggregate of monthly means, not evidence that snowfall was absent or unchanged in every month. The largest monthly increase occurred in December, with a difference of +0.33 mm/day, while the largest decrease was in February, at -0.09 mm/day. These are daily mean amounts rather than monthly snowfall totals, and they show that monthly differences could vary in direction.