Climate Change Chart of Megève, France

Overview of climate changes

Changes in snowfall

Mean daily snowfall increased on an unweighted average basis across calendar months, with a difference of +4.03 mm/day compared with the earlier reference period. These are daily amounts, not monthly totals, and the average difference does not imply an increase in every month. The largest monthly increase in mean daily snowfall was in March, at a difference of +15.03 mm/day. By contrast, the largest monthly decrease occurred in October, with a difference of -0.79 mm/day; together, these month-specific differences show that the snowfall comparison was not uniform across months.

Temperature changes

Averaged across calendar months, monthly mean temperatures show a difference of +2.08 °C compared with the earlier reference period; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in December, with a difference of +5.52 °C. This identifies the strongest increase among the supplied monthly temperature differences, rather than a change shared by every month.

Changes in rainfall

Mean daily rainfall, rather than monthly rainfall totals, had an unweighted average difference across calendar months of +0.63 mm/day compared with the earlier reference period. This describes the overall pattern across the monthly means, not the change in every individual month. The largest monthly increase in mean daily rainfall occurred in October, at a difference of +1.44 mm/day. It is a daily average for that month, not a monthly accumulation.

Changes in sunshine duration

Mean daily sunshine duration was lower on average across calendar months, with a difference of -0.56 hours/day compared with the earlier period. This is an unweighted mean of monthly daily-hour averages, not a day-weighted annual figure or a description of every month. The largest monthly decrease in mean daily sunshine duration was in March, with a difference of -0.88 hours/day. This points to the strongest monthly decrease in the supplied data, not a uniform decrease throughout the year.