Climate Change Chart of Tagaytay City, Philippines

Overview of climate changes

Changes in rainfall

Mean daily rainfall, averaged across calendar months, had a difference of -1.31 mm/day compared with the earlier reference period. This is an unweighted average of monthly means, not an annual total or a day-weighted average, and it does not describe the change in every individual month. The largest monthly decrease was in August, with a difference of -4.52 mm/day in mean daily rainfall. In contrast, December had the largest monthly increase, at +1.72 mm/day; these identify the strongest reported decreases and increases, not the pattern in every month.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference of -0.51 hours/day. This unweighted mean summarizes the monthly averages; it is not a day-weighted annual figure and does not mean that each month had the same change. The largest monthly decrease in mean daily sunshine was in July, at -1.48 hours/day. The largest monthly increase came in November, with a difference of +0.09 hours/day, showing that the monthly changes were not uniform.

Temperature changes

The mean difference in monthly mean temperature, averaged across calendar months, was an increase of +0.95 °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, at +1.32 °C. That marks the strongest increase among the reported monthly differences, rather than implying that every month changed by the same amount.