Climate Change Chart of Iloilo City, Philippines

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +0.84 °C in the more recent 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 December, with a difference of +1.06 °C compared with the earlier reference period; this identifies the strongest increase among the supplied monthly temperature differences, not a uniform change in every month.

Changes in rainfall

Averaged across calendar months, mean daily rainfall has a difference of +0.91 mm/day in the more recent period. This is an unweighted average of monthly means, and the values describe daily rainfall rather than monthly totals. The largest monthly increase in mean daily rainfall occurred in January, with a difference of +2.85 mm/day. By contrast, August had the largest monthly decrease, a difference of -1.43 mm/day; these month-specific changes do not imply the same direction in every month.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration shows a difference of -0.25 hours/day in the more recent period, based on an unweighted average of monthly means rather than a day-weighted annual measure. The largest monthly decrease was in January, with a difference of -1.14 hours/day. The strongest increase was in September, at a difference of +0.26 hours/day, showing that the monthly changes were not uniform.