Climate Change Chart of San Miguel de Tucumán, Argentina

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.43 °C in the more recent reference period; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The clearest monthly contrast is in October, where the largest increase was a difference of +1.86 °C. In June, by comparison, the largest decrease was a difference of -0.75 °C. These are changes in monthly mean temperature, not a continuous trend or a description of every month.

Changes in rainfall

Mean daily rainfall, averaged across calendar months, shows a difference of -1.19 mm/day in the more recent period. This unweighted average of monthly means describes daily rainfall levels across the calendar months; it is not a change in annual or monthly rainfall totals. The largest monthly decrease occurred in November / December, with a difference of -2.92 mm/day. The tied months share this reported distinction; the result concerns mean daily rainfall in those months rather than rainfall on every day.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months shows a difference of +0.74 hours/day in the more recent period. This is an unweighted comparison of monthly mean daily hours, not a day-weighted annual figure or a claim that each month had more sunshine. The largest monthly increase was in August, at a difference of +1.63 hours/day. The largest decrease came in December, with a difference of -0.19 hours/day, showing that monthly differences were not uniform.