Climate Change Chart of Marigot, Saint Martin (French part)

Overview of climate changes

Changes in rainfall

Mean daily rainfall was lower by an average difference of -0.70 mm/day across calendar months in the more recent reference period. This unweighted comparison of monthly means describes an aggregate difference, not a change that occurred in every month; the figures are daily means rather than monthly rainfall totals. The largest monthly decrease was in August, with a difference of -1.73 mm/day. In contrast, the largest monthly increase occurred in February, at a difference of +0.16 mm/day, showing that the month-to-month comparisons did not all move in the same direction.

Temperature changes

Monthly mean temperature was higher by an average difference of +0.66 °C across calendar months in the more recent reference period; this is an unweighted mean of the monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in September, at a difference of +0.96 °C. This identifies the strongest increase among the supplied monthly comparisons, rather than describing every month or a continuous change between the reference periods.

Changes in sunshine duration

Mean daily sunshine duration had an average difference of +0.01 hours/day higher across calendar months in the more recent reference period. This is an unweighted average of monthly means, so it summarizes the comparison rather than implying the same change in each month. The largest monthly increase was in September, with a difference of +0.14 hours/day, while the largest decrease was in April, at a difference of -0.11 hours/day. These daily-hour comparisons describe monthly mean sunshine duration, not the sunshine experienced on every individual day.