Climate Change Chart of The Valley, Anguilla

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.70 °C compared with the earlier reference period; this is an unweighted mean of monthly averages, not a day-weighted annual figure or a measure of daytime highs. The largest monthly increase was in September, with a difference of +0.98 °C. These summaries describe period averages and do not imply that every month, day or visit was warmer.

Changes in rainfall

Mean daily rainfall averaged across calendar months shows a difference of -0.66 mm/day in the more recent period. The largest monthly decrease was in August, with a difference of -1.49 mm/day, while February recorded the largest increase, a difference of +0.12 mm/day. These are changes in average daily amounts, not monthly rainfall totals; they do not establish how often rain fell or what conditions will be on a particular date.

Changes in sunshine duration

Mean daily sunshine duration had an averaged-across-calendar-months difference of 0.00 hours/day. That rounded overall figure sits alongside a largest monthly increase in September of +0.13 hours/day and a largest monthly decrease in July of -0.11 hours/day; the near-zero overall rounded difference should not be read as proof that sunshine was unchanged in every month. These figures describe average daily duration, not guaranteed sunshine for individual days.