Climate Change Chart of Havana, Cuba

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.33 °C in the more recent period; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime highs. The monthly changes were not uniform: February had the largest increase, a difference of +0.75 °C, while January had the largest decrease, a difference of -0.14 °C. These extrema identify the strongest monthly changes in opposite directions, rather than describing every month or a continuous trend between the reference periods.

Changes in rainfall

Mean daily rainfall, rather than monthly rainfall totals, averaged across calendar months shows a difference of +0.30 mm/day between the reference periods; the aggregate does not imply that rainfall increased in every month. The largest monthly increase occurred in May, with a difference of +1.23 mm/day, whereas March recorded the largest decrease, a difference of -0.29 mm/day. These monthly changes show that the overall average combines movement in different directions, and they do not describe day-to-day variability or establish a continuous trend.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months shows a difference of -0.38 hours/day in the more recent period, an unweighted comparison of monthly means rather than a day-weighted annual figure. The largest monthly decrease was in June, at a difference of -0.84 hours/day. This monthly low point does not mean the same decrease occurred in every month, nor does the comparison describe daily variability or explain why the periods differ.