Climate Change Chart of La Plage, France

Overview of climate changes

Temperature changes

The mean difference across calendar-month temperature means was an increase of +2.16 °C compared with the earlier reference period. This is an aggregate across months, not evidence that every month was warmer, and the metric describes monthly means rather than daytime maximum temperatures. The largest monthly increase was in December, with a difference of +5.53 °C. This marks the strongest reported monthly increase; it does not imply a continuous change between the reference periods.

Changes in snowfall

Mean daily snowfall averaged across calendar months had a difference of +3.28 mm/day more in the more recent period. This is an unweighted summary of monthly means, not a day-weighted annual average, and the measure is daily snowfall rather than monthly totals. The largest monthly increase was in March, with a difference of +13.52 mm/day in mean daily snowfall. In October, the largest monthly decrease was a difference of -1.20 mm/day. These are contrasting monthly differences and do not imply the same direction in every month.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.77 mm/day more in the more recent period. This unweighted comparison summarizes monthly means; it is not a day-weighted annual average, and the figures are daily means rather than monthly rainfall totals. The largest monthly increase in mean daily rainfall occurred in October, at a difference of +1.38 mm/day. This identifies the strongest reported increase among the monthly comparisons, not a change that should be assumed for every day in that month.

Changes in sunshine duration

Across calendar months, mean daily sunshine duration had a difference of -0.47 hours/day in the more recent period. This is an unweighted average of monthly means, so it summarizes the comparison rather than describing every month or a day-weighted annual total. The largest monthly decrease was in March, with a difference of -1.03 hours/day in mean daily sunshine. By contrast, June recorded the largest monthly increase, a difference of +0.06 hours/day; the two extrema show that monthly differences were not uniform.