Climate Change Chart of Puerto Vallarta, Mexico

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature had a difference of -0.18 °C compared with the earlier reference period; this unweighted mean describes the set of monthly averages, not a day-weighted annual average or a change in every month. The largest monthly decrease was in February, with a difference of -0.86 °C, while the largest increase was in July, with a difference of +0.32 °C. These are changes in monthly mean temperature, not daytime maximum temperatures.

Changes in rainfall

Mean daily rainfall had a difference of +0.40 mm/day averaged across calendar months; this is a change in daily averages, not in monthly rainfall totals. The largest monthly increase was in June, with a difference of +1.94 mm/day, while the largest decrease was in August, with a difference of -0.76 mm/day. These differences describe monthly averages and do not establish how many rainy days occurred.

Changes in sunshine duration

Mean daily sunshine duration had a difference of -0.32 hours/day averaged across calendar months. The largest monthly decrease was in June, with a difference of -0.81 hours/day, whereas the largest increase was in January, with a difference of +0.18 hours/day. These figures describe average daily hours within each month, rather than guaranteeing the sunshine on any particular day.