Climate Change Chart of Caloocan, Philippines

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.57 °C compared with the earlier reference period; this is an unweighted mean of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in May, with a difference of +1.22 °C. That identifies the strongest increase among the supplied monthly changes, rather than indicating that every month warmed by the same amount.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.03 mm/day. This small aggregate increase describes the unweighted mean of the monthly daily averages, not a day-weighted annual average or a change in monthly rainfall totals. The monthly pattern includes opposing shifts: in June, mean daily rainfall had a difference of -2.37 mm/day, while in September it had a difference of +1.75 mm/day. These are the largest supplied monthly decrease and increase, respectively, and show why the near-unchanged overall mean does not describe each month individually.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.38 hours/day compared with the earlier reference period. This is an unweighted average across calendar-month means, rather than a day-weighted annual figure. The largest monthly decrease occurred in August, with a difference of -1.14 hours/day; by contrast, the largest monthly increase was in June, at a difference of +0.20 hours/day. These contrasting monthly changes put the lower overall mean in context without implying the same shift in every month.