Climate Change Chart of Quezon City, Philippines

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.53 °C. This is an unweighted comparison of monthly means, not a day-weighted annual average, and it describes the overall average rather than a uniform shift in every month; these temperatures are not daytime maxima. The largest monthly increase was in May, with a difference of +1.19 °C. By contrast, February had the largest monthly decrease, a difference of -0.01 °C. These contrasting months show why the average difference should not be read as applying equally throughout the calendar.

Changes in rainfall

Mean daily rainfall averaged across calendar months had a difference of +0.03 mm/day. This unweighted mean of monthly means is not a day-weighted annual average, and the small overall difference does not mean rainfall changed by the same amount in each month; the measure is a daily mean, not a monthly total. Monthly differences were more pronounced in particular months: September recorded the largest increase, a difference of +1.75 mm/day, while June recorded the largest decrease, a difference of -2.37 mm/day. These are changes in mean daily rainfall for those months, not changes in monthly totals.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, had a difference of -0.38 hours/day. This unweighted comparison of monthly means summarizes the calendar months collectively rather than indicating an identical change in each one. The largest monthly decrease was in August, with a difference of -1.14 hours/day. In June, sunshine instead had the largest monthly increase, a difference of +0.20 hours/day. The monthly contrasts help put the overall average difference in context; the measure is mean daily sunshine duration.