Climate Change Chart of Siwa Oasis, Egypt

Overview of climate changes

Temperature changes

Monthly mean temperature was higher by a difference of +2.04 °C averaged across calendar months in the more recent period; this unweighted comparison of monthly means is not a day-weighted annual average and does not describe every month individually. The largest monthly increase was in December, with a difference of +3.04 °C. These are monthly mean temperatures, not daytime maximum temperatures.

Changes in sunshine duration

Mean daily sunshine duration decreased by a difference of -0.16 hours/day averaged across calendar months in the more recent period. This is an unweighted comparison of monthly means, rather than a day-weighted annual average, and does not mean that every month had less sunshine. The largest monthly decrease was in February, with a difference of -0.47 hours/day in mean daily sunshine duration. By contrast, the largest monthly increase occurred in December, at a difference of +0.12 hours/day, showing that monthly changes did not all move in the same direction.

Changes in rainfall

Mean daily rainfall increased by a difference of +0.01 mm/day averaged across calendar months compared with the earlier reference period. This unweighted mean of monthly means does not represent a day-weighted annual average, and the overall difference does not imply the same change in each month. The largest monthly increase in mean daily rainfall was in January, at a difference of +0.07 mm/day; the largest monthly decrease was in March, at a difference of -0.04 mm/day. These are differences in daily means, not monthly rainfall totals.