Climate Change Chart of Palma de Mallorca, Spain

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.65 °C compared with the earlier reference period. This is an unweighted mean of monthly means, not a day-weighted annual average, and it describes average conditions rather than daytime maximum temperatures. The largest monthly increase was in July, with a difference of +1.21 °C. That identifies the strongest monthly increase in the supplied comparison, rather than implying that every month warmed by the same amount.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, shows a difference of -0.33 hours/day compared with the earlier period. The figure is an unweighted mean across monthly means, not a day-weighted annual average. The largest monthly decrease was in April, with a difference of -0.64 hours/day per day. January had the largest increase, a difference of +0.13 hours/day per day, so the mean change should not be read as applying uniformly to each month.

Changes in rainfall

Averaged across calendar months, mean daily rainfall increased by +0.24 mm/day compared with the earlier reference period. This is an unweighted average of monthly means, not a day-weighted annual total; the figures describe daily mean amounts rather than monthly rainfall totals. The largest monthly increase occurred in September, with a difference of +0.93 mm/day in mean daily rainfall. In contrast, December had the largest monthly decrease, a difference of -0.57 mm/day. These opposing monthly changes show why the overall mean does not describe the change in every month.

Changes in snowfall

Averaged across calendar months, mean daily snowfall shows a difference of +0.01 mm/day compared with the earlier reference period. This is an unweighted mean of monthly means, not a day-weighted annual average, and the small mean difference does not imply that snowfall was absent. The largest monthly increase in mean daily snowfall was in February, with a difference of +0.32 mm/day. The largest decrease was in January, at a difference of -0.19 mm/day; these monthly contrasts are distinct from the across-month mean.