Climate Change Chart of Canary Islands, Spain

Overview of climate changes

Changes in sunshine duration

Mean daily sunshine duration was lower on average across calendar months, with a difference of -0.35 hours/day compared with the earlier reference period. This is an unweighted average of monthly means, rather than a day-weighted annual figure, and it does not imply a decrease in every month. The largest monthly decreases were tied in June / July, each with a difference of -0.55 hours/day. These figures describe average daily sunshine duration; they do not establish that every day in those months had less sunshine.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.49 mm/day compared with the earlier reference period. This is an unweighted mean of monthly averages, not a day-weighted annual average or a monthly total, and it does not mean that rainfall rose in every month. The largest monthly increase occurred in February, at +1.24 mm/day. In November, the largest monthly decrease was -0.10 mm/day; these contrasting monthly differences show why the across-month mean does not describe each month individually.

Temperature changes

The mean difference across calendar-month temperature averages was +0.01 °C, a very small positive change at the displayed precision; it describes an unweighted average across months, not a change shared by every month. These figures are monthly mean temperatures, not daytime maxima. The largest monthly increase was in December, with a difference of +0.47 °C compared with the earlier reference period. By contrast, March had the largest monthly decrease, a difference of -0.39 °C.