Climate Change Chart of Hamilton, Bermuda

Overview of climate changes

Temperature changes

Monthly mean temperature was higher by an average difference of +0.80 °C across calendar months in the more recent period; this is an unweighted summary of the monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in February, with a difference of +1.65 °C. This identifies the strongest increase among the monthly means, rather than describing every month or a continuous change between the reference periods.

Changes in rainfall

Mean daily rainfall increased by an average difference of +0.65 mm/day across calendar months in the more recent period. This unweighted summary describes monthly averages of daily amounts, not monthly rainfall totals or the rainfall on any particular day. The largest monthly increase in mean daily rainfall occurred in November, at a difference of +1.64 mm/day. By contrast, February had the largest monthly decrease, with a difference of -0.01 mm/day; these are monthly-average differences, not a description of daily variability.

Changes in sunshine duration

Mean daily sunshine duration had an average difference of -0.29 hours/day across calendar months in the more recent period. This is an unweighted summary of the monthly means, rather than a day-weighted annual average or a claim that every month had less sunshine. The largest monthly decreases were tied between January / November, each with a difference of -0.63 hours/day in mean daily sunshine duration. The tied result describes monthly averages and does not establish the sunshine received on individual days.