Climate Change Chart of Foz do Iguaçu, Brazil

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.45 °C compared with the earlier reference period; this unweighted mean summarizes monthly averages rather than a day-weighted annual average, and it does not imply the same change in every month. The largest monthly increase was in October, at +1.26 °C, while May had the largest decrease, a difference of -0.66 °C. These are changes in monthly mean temperature, not daytime maximum temperatures.

Changes in rainfall

Mean daily rainfall, rather than monthly totals, averaged across calendar months had a difference of -0.44 mm/day in the more recent period. This is an unweighted comparison of the calendar-month means, not a day-weighted annual average, and the overall difference does not describe every month. The largest monthly increase occurred in March, with a difference of +1.29 mm/day; the largest decrease was in July, at -1.28 mm/day. These month-specific changes show that the direction of the comparison varied across the year.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference of +0.32 hours/day compared with the earlier reference period. This unweighted mean summarizes the monthly averages, not a day-weighted annual average, and does not mean sunshine increased in every month. The largest monthly increase was in July, at +0.85 hours/day, whereas November recorded the largest decrease, a difference of -0.45 hours/day. These figures describe differences in mean daily hours, not the sunshine duration on every day.