Climate Change Chart of Bordeaux, France

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.03 °C; this unweighted mean of monthly means is not a day-weighted annual average, and it does not describe every month. The largest monthly increase was in December, with a difference of +2.82 °C. By contrast, April had the largest decrease, at -0.05 °C. These figures describe monthly mean temperatures, not daytime maximum temperatures.

Changes in sunshine duration

Mean daily sunshine duration declined on average across calendar months, with a difference of -0.54 hours/day. This unweighted mean of monthly means summarizes the comparison, not a change shared by every month. The largest decrease was in March, at -1.12 hours/day; February had the largest increase, with a difference of +0.05 hours/day. These figures concern average daily sunshine hours.

Changes in rainfall

Mean daily rainfall, rather than monthly rainfall totals, was higher on average across calendar months, with a difference of +0.68 mm/day. This is an unweighted average of monthly means and should not be read as a change applying to every month. The largest monthly increase occurred in June, at +2.12 mm/day, while August recorded the largest decrease, at -0.04 mm/day.

Changes in snowfall

Mean daily snowfall was lower on average across calendar months, with a difference of -0.05 mm/day. This unweighted average of monthly means does not imply the same change in every month. The largest decrease occurred in January, at -0.26 mm/day, while the largest increase was in March, at +0.06 mm/day. These are daily mean amounts, not monthly snowfall totals.