Climate Change Chart of Brades Estate, Montserrat

Overview of climate changes

Changes in rainfall

Mean daily rainfall averaged across calendar months was lower by a difference of -0.72 mm/day in the more recent reference period. This is an unweighted average of monthly means, not a day-weighted annual average or a change applying to every month. The largest monthly decrease occurred in August, where the difference was -2.00 mm/day. The largest increase went the other way: in March, mean daily rainfall had a difference of +0.26 mm/day. These monthly contrasts show that the overall average does not describe each month's change; the figures are daily means, not monthly rainfall totals.

Temperature changes

Monthly mean temperature averaged across calendar months was higher by a difference of +0.94 °C in the more recent reference period; this unweighted comparison summarizes monthly means, not daytime maximum temperatures or the change in every month. The largest monthly increase was in September, with a difference of +1.17 °C compared with the earlier period. This identifies the strongest increase among the reported monthly changes, rather than implying a uniform rise throughout the year.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, was lower by a difference of -0.08 hours/day in the more recent reference period. This unweighted summary of monthly means does not indicate that sunshine declined in every month. The strongest monthly decrease was in October, with a difference of -0.32 hours/day in mean daily sunshine duration. By contrast, August recorded the largest monthly increase, a difference of +0.07 hours/day; these extrema describe particular months rather than a consistent change across the calendar.